Digital Digest -> Software -> x264 -> History & Old Downloads

x264 -> Version History

This is the version history page for x264. You can return to the main page for this software by clicking here. Index: Version r2935 (Sep 26, 2018) Version r2901 (Jan 20, 2018) Version r2893 (Dec 26, 2017) Version r2851 (Jun 27, 2017) Version r2833 (May 27, 2017) Version r2762 (Jan 30) (Jan 31, 2017) Version r2762 (Jan 25, 2017) Version r2744 (Dec 4, 2016) Version r2705 (Jul 6, 2016) Version r2694 (Apr 21, 2016) Version r2692 (Apr 19, 2016) Version r2665 (Jan 19, 2016) Version r2664 (Jan 18, 2016) Version r2638 (Oct 12, 2015) Version r2597 (Aug 20, 2015) Version r2579 (Jul 27, 2015) Version r2538 (Feb 26, 2015) Version r2525 (Dec 23, 2014) Version r2491 (Nov 14, 2014) Version r2479 (Aug 27, 2014) Version r2453 (Jul 21, 2014) Version r2431 (Apr 23, 2014) Version r2409 (Mar 14, 2014) Version r2389 (Jan 22, 2014) Version r2377 (Oct 31, 2013) Version r2356 (Aug 26, 2013) Version r2345 (Jul 10, 2013) Version r2334 (May 22, 2013) Version r2310 (May 6, 2013) Version r2309 (Apr 26, 2013) Version r2273 (Mar 1, 2013) Version r2245 (Jan 11, 2013) Version r2230 (Nov 10, 2012) Version r2216 (Sep 18, 2012) Version r2208 (Jul 19, 2012) Version r2207 (Jul 18, 2012) Version r2200 (May 23, 2012) Version r2197 (Apr 26, 2012) Version r2184 (Mar 13, 2012) Version r2183 (Mar 8, 2012) Version r2146 (Feb 9, 2012) Version r2145 (Jan 16, 2012) Version r2120 (Dec 7, 2011) Version r2119 (Dec 7, 2011) Version r2106 (Oct 23, 2011) Version r2085 (Sep 22, 2011) Version r2074 (Aug 25, 2011) Version r2057 (Aug 11, 2011) Version r2044 (Jul 31, 2011) Version r2037 (Jul 23, 2011) Version r2019 (Jul 11, 2011) Version r2008 (Jun 15, 2011) Version r1995 (May 13, 2011) Version r1947 (Apr 27, 2011) Version r1937 (Apr 15, 2011) Version r1936 (Apr 15, 2011) Version r1924 (Mar 27, 2011) Version r1913 (Feb 19, 2011) Version r1900 (Feb 7, 2011) Version r1884 (Jan 30, 2011) Version r1882 (Jan 29, 2011) Version r1867 (Jan 11, 2011) Version r1834 (Dec 15, 2010) Version r1820 (Dec 8, 2010) Version r1804 (Nov 26, 2010) Version r1790 (Nov 23, 2010) Version r1788 (Nov 21, 2010) Version r1772 (Nov 15, 2010) Version r1766 (Nov 11, 2010) Version r1745 (Oct 11, 2010) Version r1732 (Sep 28, 2010) Version r1724 (Sep 20, 2010) Version r1722 (Sep 20, 2010) Version r1713 (Sep 4, 2010) Version r1703 (Aug 25, 2010) Version r1698 (Aug 16, 2010) Version r1688 (Jul 29, 2010) Version r1683 (Jul 23, 2010) Version r1681 (Jul 22, 2010) Version r1680 (Jul 20, 2010) Version r1677 (Jul 16, 2010) Version r1675 (Jul 15, 2010) Version r1666 (Jul 5, 2010) Version r1659 (Jun 25, 2010) Version r1649 (Jun 15, 2010) Version r1643 (Jun 10, 2010) Version r1629 (Jun 3, 2010) Version r1627 (Jun 3, 2010) Version r1613 (May 27, 2010) Version r1602 (May 22, 2010) Version r1592 (May 18, 2010) Version r1583 (May 7, 2010) Version r1570 (Apr 30, 2010) Version r1564 (Apr 25, 2010) Version r1563 (Apr 24, 2010) Version r1542 (Apr 18, 2010) Version r1538 (Apr 12, 2010) Version r1523 (Apr 8, 2010) Version r1510 (Mar 29, 2010) Version r1471 (Feb 28, 2010) Version r1462 (Feb 24, 2010) Version r1442 (Feb 15, 2010) Version r1416 (Jan 31, 2010) Version r1400 (Jan 21, 2010) Version r1391 (Jan 15, 2010) Version r1376 (Dec 16, 2009) Version r1373 (Dec 11, 2009) Version r1369 (Dec 10, 2009) Version r1361 (Dec 9, 2009) Version r1360 (Dec 6, 2009) Version r1354 (Nov 30, 2009) Version r1353 (Nov 30, 2009) Version r1352 (Nov 28, 2009) Version r1347 (Nov 24, 2009) Version r1342 (Nov 16, 2009) Version r1339 (Nov 16, 2009) Version r1336 (Nov 14, 2009) Version r1332 (Nov 10, 2009) Version r1331 (Nov 10, 2009) Version r1330 (Nov 9, 2009) Version r1318 (Oct 31, 2009) Version r1310 (Oct 26, 2009) Version r1309 (Oct 26, 2009) Version r1302 (Oct 25, 2009) Version r1301 (Oct 20, 2009) Version r1294 (Oct 19, 2009) Version r1292 (Oct 13, 2009) Version r1288 (Oct 13, 2009) Version r1281 (Oct 8, 2009) Version r1271 (Sep 25, 2009) Version r1268 (Sep 24, 2009) Version r1259 (Sep 15, 2009) Version r1251 (Sep 7, 2009) Version r1247 (Sep 3, 2009) Version r1246 (Sep 2, 2009) Version r1243 (Sep 1, 2009) Version r1240 (Aug 30, 2009) Version r1239 (Aug 29, 2009) Version r1235 (Aug 27, 2009) Version r1232 (Aug 25, 2009) Version r1222 (Aug 21, 2009) Version r1217 (Aug 19, 2009) Version r1214 (Aug 18, 2009) Version r1210 (Aug 14, 2009) Version r1206 (Aug 10, 2009) Version r1204 (Aug 9, 2009) Version r1201 (Aug 8, 2009) Version r1198 (Aug 7, 2009) Version r1195 (Jul 29, 2009) Version r1192 (Jul 28, 2009) Version r1190 (Jul 28, 2009) Version r1189 (Jul 27, 2009) Version r1185 (Jul 23, 2009) Version r1184 (Jul 20, 2009) Version r1183 (Jul 17, 2009) Version r1181 (Jul 11, 2009) Version r1179 (Jul 9, 2009) Version r1173 (Jun 26, 2009) Version r1171 (Jun 23, 2009) Version r1170 (Jun 21, 2009) Version r1169 (Jun 20, 2009) Version r1165 (Jun 11, 2009) Version r1163 (May 29, 2009) Version r1160 (May 27, 2009) Version r1159 (May 25, 2009) Version r1153 (May 19, 2009) Version r1148 (May 10, 2009) Version r1145 (Apr 22, 2009) Version r1143 (Apr 20, 2009) Version r1140 (Apr 15, 2009) Version r1139 (Apr 10, 2009) Version r1137 (Apr 7, 2009) Version r1136 (Apr 5, 2009) Version r1134 (Apr 1, 2009) Version r1130 (Mar 27, 2009) Version r1129 (Mar 21, 2009) Version r1128 (Mar 19, 2009) Version r1127 (Mar 11, 2009) Version r1125 (Mar 9, 2009) Version r1123 (Mar 7, 2009) Version r1120 (Mar 6, 2009) Version r1119 (Mar 4, 2009) Version r1115 (Feb 27, 2009) Version r1114 (Feb 17, 2009) Version r1113 (Feb 14, 2009) Version r1112 (Feb 13, 2009) Version r1110 (Feb 12, 2009) Version r1109 (Feb 10, 2009) Version r1106 (Feb 9, 2009) Version r1102 (Feb 9, 2009) Version r1101 (Feb 5, 2009) Version r1099 (Feb 4, 2009) Version r1097 (Feb 2, 2009) Version r1096 (Jan 31, 2009) Version r1095 (Jan 30, 2009) Version r1093 (Jan 29, 2009) Version r1090 (Jan 28, 2009) Version r1089 (Jan 27, 2009) Version r1088 (Jan 24, 2009) Version r1086 (Jan 20, 2009) Version r1085 (Jan 20, 2009) Version r1083 (Jan 19, 2009) Version r1081 (Jan 18, 2009) Version r1080 (Jan 15, 2009) Version r1077 (Jan 14, 2009) Version r1074 (Jan 9, 2009) Version r1073 (Jan 7, 2009) Version r1071 (Jan 2, 2009) Version r1069 (Jan 1, 2009) Version r1065 (Dec 30, 2008) Version r1063 (Dec 29, 2008) Version r1062 (Dec 27, 2008) Version r1061 (Dec 25, 2008) Version r1057 (Dec 16, 2008) Version r1055 (Dec 15, 2008) Version r1054 (Dec 15, 2008) Version r1053 (Dec 14, 2008) Version r1051 (Dec 12, 2008) Version r1047 (Dec 6, 2008) Version r1046 (Dec 1, 2008) Version r1045 (Nov 30, 2008) Version r1042 (Nov 29, 2008) Version r1040 (Nov 27, 2008) Version r1038 (Nov 26, 2008) Version r1037 (Nov 26, 2008) Version r1032 (Nov 25, 2008) Version r1030 (Nov 25, 2008) Version r1029 (Nov 21, 2008) Version r1028 (Nov 14, 2008) Version r1026 (Nov 11, 2008) Version r1024 (Nov 11, 2008) Version r1019 (Nov 6, 2008) Version r1016 (Nov 1, 2008) Version r999 (Oct 3, 2008) Version r996 (Oct 2, 2008) Version r995 (Sep 29, 2008) Version r994 (Sep 29, 2008) Version r992 (Sep 28, 2008) Version r988 (Sep 27, 2008) Version full rev. 987 (Sep 23, 2008) Version full rev. 986 (Sep 22, 2008) Version full rev. 985 (Sep 21, 2008) Version full rev. 979 (Sep 17, 2008) Version full rev. 977 (Sep 17, 2008) Version full rev. 974 (Sep 16, 2008) Version full rev. 973 (Sep 16, 2008) Version full rev. 969 (Sep 15, 2008) Version full rev. 968 (Sep 14, 2008) Version full rev. 967 (Sep 10, 2008) Version full rev. 965 (Sep 7, 2008) Version full rev. 964 (Sep 6, 2008) Version full rev. 957 (Sep 3, 2008) Version full rev. 956 (Sep 2, 2008) Version full rev. 955 (Sep 1, 2008) Version full rev. 953 (Aug 30, 2008) Version full rev. 950 (Aug 27, 2008) Version full rev. 948 (Aug 23, 2008) Version full rev. 947 (Aug 22, 2008) Version full rev. 942 (Aug 21, 2008) Version full rev. 938 (Aug 19, 2008) Version full rev. 937 (Aug 17, 2008) Version full rev. 936 (Aug 16, 2008) Version full rev. 934 (Aug 12, 2008) Version full rev. 930 (Aug 10, 2008) Version full rev. 928 (Jul 31, 2008) Version full rev. 922 (Jul 30, 2008) Version full rev. 920 (Jul 26, 2008) Version full rev. 918 (Jul 25, 2008) Version full rev. 915 (Jul 21, 2008) Version full rev. 914 (Jul 19, 2008) Version full rev. 913 (Jul 17, 2008) Version full rev. 912 (Jul 13, 2008) Version full rev. 910 (Jul 12, 2008) Version full rev. 906 (Jul 11, 2008) Version full rev. 901 (Jul 7, 2008) Version full rev. 899 (Jul 5, 2008) Version full rev. 898 (Jul 4, 2008) Version full rev. 897 (Jul 3, 2008) Version full rev. 895 (Jul 3, 2008) Version full rev. 892 (Jun 30, 2008) Version full rev. 891 (Jun 25, 2008) Version full rev. 889 (Jun 19, 2008) Version full rev. 886 (Jun 16, 2008) Version full rev. 883 (Jun 13, 2008) Version full rev. 881 (Jun 12, 2008) Version full rev. 880 (Jun 11, 2008) Version full rev. 877 (Jun 8, 2008) Version full rev. 871 (Jun 6, 2008) Version full rev. 870 (Jun 6, 2008) Version full rev. 869 (Jun 4, 2008) Version full rev. 861 (Jun 3, 2008) Version full rev. 859 (May 21, 2008) Version full rev. 851 (May 17, 2008) Version full rev. 845 (May 15, 2008) Version full rev. 839 (Apr 28, 2008) Version full rev. 830 (Apr 26, 2008) Version full rev. 828 (Apr 25, 2008) Version full rev. 826 (Apr 22, 2008) Version full rev. 821 (Apr 17, 2008) Version full rev. 819 (Apr 15, 2008) Version full rev. 818 (Apr 12, 2008) Version full rev. 816 (Apr 10, 2008) Version full rev. 808 (Apr 1, 2008) Version full rev. 805 (Mar 31, 2008) Version full rev. 798 (Mar 26, 2008) Version full rev. 796 (Mar 25, 2008) Version full rev. 791 (Mar 25, 2008) Version full rev. 786 (Mar 23, 2008) Version full rev. 782 (Mar 22, 2008) Version full rev. 777 (Mar 21, 2008) Version full rev. 771 (Mar 20, 2008) Version full rev. 763 (Mar 19, 2008) Version full rev. 756 (Mar 17, 2008) Version full rev. 749 (Mar 12, 2008) Version full rev. 748 (Mar 8, 2008) Version full rev. 747 (Mar 7, 2008) Version full rev. 745 (Mar 2, 2008) Version full rev. 736 (Jan 29, 2008) Version full rev. 735 (Jan 28, 2008) Version full rev. 721 (Jan 18, 2008) Version full rev. 720 (Jan 15, 2008) Version full rev. 719 (Jan 10, 2008) Version full rev. 717 (Jan 7, 2008) Version full rev. 715 (Jan 4, 2008) Version full rev. 714 (Dec 21, 2007) Version full rev. 713 (Dec 21, 2007) Version full rev. 712 (Dec 14, 2007) Version full rev. 711 (Dec 11, 2007) Version full rev. 710 (Dec 10, 2007) Version full rev. 709 (Dec 7, 2007) Version full rev. 708 (Dec 4, 2007) Version full rev. 706 (Dec 3, 2007) Version full rev. 705 (Dec 2, 2007) Version full rev. 702 (Nov 27, 2007) Version full rev. 701 (Nov 26, 2007) Version full rev. 700 (Nov 22, 2007) Version full rev. 698 (Nov 21, 2007) Version full rev. 694 (Nov 20, 2007) Version full rev. 692 (Nov 19, 2007) Version full rev. 690 (Nov 18, 2007) Version full rev. 689 (Nov 18, 2007) Version full rev. 688 (Nov 17, 2007) Version full rev. 686 (Nov 16, 2007) Version full rev. 685 (Nov 14, 2007) Version full rev. 683 (Nov 13, 2007) Version full rev. 682 (Nov 2, 2007) Version full rev. 681 (Oct 31, 2007) Version full rev. 680 (Sep 25, 2007) Version full rev. 678 (Sep 22, 2007) Version full rev. 677 (Sep 21, 2007) Version full rev. 676 (Sep 16, 2007) Version full rev. 675 (Sep 13, 2007) Version full rev. 674 (Sep 10, 2007) Version full rev. 673 (Sep 9, 2007) Version full rev. 672 (Sep 4, 2007) Version full rev. 671 (Aug 21, 2007) Version full rev. 670 (Aug 18, 2007) Version full rev. 669 (Aug 14, 2007) Version full rev. 667 (Jul 18, 2007) Version full rev. 664 (Jul 7, 2007) Version full rev. 663 (Jun 29, 2007) Version full rev. 662 (Jun 23, 2007) Version full rev. 661 (Jun 16, 2007) Version full rev. 659 (Jun 11, 2007) Version full rev. 658 (Jun 6, 2007) Version full rev. 656 (May 26, 2007) Version full rev. 655 (May 3, 2007) Version full rev. 654 (Apr 23, 2007) Version full rev. 652 (Apr 22, 2007) Version full rev. 651 (Apr 22, 2007) Version full rev. 650 (Apr 13, 2007) Version full rev. 649 (Apr 11, 2007) Version full rev. 648 (Apr 8, 2007) Version full rev. 645 (Apr 6, 2007) Version full rev. 640 (Apr 4, 2007) Version full rev. 638 (Apr 3, 2007) Version full rev. 636 (Apr 1, 2007) Version full rev. 635 (Mar 25, 2007) Version full rev. 634 (Mar 15, 2007) Version full rev. 628 (Mar 6, 2007) Version full rev. 627 (Mar 4, 2007) Version full rev. 624 (Mar 1, 2007) Version full rev. 623 (Feb 23, 2007) Version full rev. 622 (Jan 30, 2007) Version full rev. 621 (Jan 26, 2007) Version full rev. 620 (Jan 22, 2007) Version full rev. 619 (Jan 21, 2007) Version full rev. 618 (Jan 12, 2007) Version full rev. 617 (Jan 10, 2007) Version full rev. 616 (Jan 3, 2007) Version full rev. 615 (Jan 2, 2007) Version full rev. 614 (Dec 21, 2006) Version full rev. 612 (Dec 20, 2006) Version full rev. 611 (Dec 16, 2006) Version full rev. 606 (Dec 13, 2006) Version full rev. 605 (Dec 12, 2006) Version full rev. 604 (Nov 28, 2006) Version full rev. 603 (Nov 26, 2006) Version full rev. 602 (Nov 23, 2006) Version full rev. 601 (Nov 19, 2006) Version full rev. 600 (Nov 7, 2006) Version full rev. 598 (Oct 31, 2006) Version full rev. 597 (Oct 30, 2006) Version full rev. 595 (Oct 29, 2006) Version full rev. 594 (Oct 19, 2006) Version full rev. 593 (Oct 17, 2006) Version full rev. 592 (Oct 14, 2006) Version full rev. 590 (Oct 11, 2006) Version full rev. 587 (Oct 10, 2006) Version full rev. 584 (Oct 7, 2006) Version full rev. 582 (Oct 6, 2006) Version full rev. 579 (Oct 5, 2006) Version full rev. 578 (Oct 3, 2006) Version full rev. 576 (Oct 2, 2006) Version full rev. 572 (Oct 1, 2006) Version full rev. 570 (Oct 1, 2006) Version full rev. 569 (Sep 28, 2006) Version full rev. 568 (Sep 27, 2006) Version full rev. 567 (Sep 26, 2006) Version full rev. 566 (Sep 25, 2006) Version full rev. 565 (Sep 23, 2006) Version full rev. 564 (Sep 14, 2006) Version full rev. 563 (Sep 13, 2006) Version full rev. 560 (Sep 11, 2006) Version full rev. 558 (Aug 23, 2006) Version full rev. 557 (Aug 21, 2006) Version full rev. 556 (Aug 19, 2006) Version full rev. 555 (Aug 18, 2006) Version full rev. 553 (Aug 17, 2006) Version full rev. 551 (Aug 4, 2006) Version full rev. 547 (Aug 3, 2006) Version full rev. 537 (Jul 18, 2006) Version full rev. 536 (Jul 17, 2006) Version full rev. 534 (Jul 9, 2006) Version full rev. 533 (Jun 29, 2006) Version full rev. 532 (Jun 13, 2006) Version full rev. 531 (Jun 1, 2006) Version full rev. 530 (May 31, 2006) Version full rev. 529 (May 30, 2006) Version full rev. 527 (May 24, 2006) Version full rev. 526 (May 23, 2006) Version full rev. 525 (May 21, 2006) Version full rev. 523 (May 12, 2006) Version full rev. 522 (May 11, 2006) Version full rev. 519 (May 10, 2006) Version full rev. 518 (May 8, 2006) Version full rev. 517 (May 4, 2006) Version full rev. 516 (Apr 30, 2006) Version full rev. 515 (Apr 29, 2006) Version full rev. 514 (Apr 29, 2006) Version full rev. 513 (Apr 29, 2006) Version full rev. 512 (Apr 25, 2006) Version full rev. 511 (Apr 25, 2006) Version full rev. 510 (Apr 25, 2006) Version full rev. 509 (Apr 25, 2006) Version full rev. 508 (Apr 24, 2006) Version full rev. 507 (Apr 24, 2006) Version full rev. 506 (Apr 21, 2006) Version full rev. 505 (Apr 20, 2006) Version full rev. 504 (Apr 20, 2006) Version full rev. 503 (Apr 19, 2006) Version full rev. 502 (Apr 17, 2006) Version full rev. 501 (Apr 17, 2006) Version full rev. 500 (Apr 16, 2006) Version full rev. 499 (Apr 16, 2006) Version full rev. 498 (Apr 12, 2006) Version full rev. 496 (Apr 12, 2006) Version full rev. 497 (Apr 12, 2006) Version full rev. 495 (Apr 11, 2006) Version full rev. 494 (Apr 11, 2006) Version full rev. 493 (Apr 11, 2006) Version full rev. 492 (Apr 10, 2006) Version full rev. 491 (Apr 10, 2006) Version full rev. 489 (Apr 10, 2006) Version full rev. 490 (Apr 10, 2006) Version full rev. 488 (Apr 8, 2006) Version full rev. 487 (Mar 29, 2006) Version full rev. 486 (Mar 28, 2006) Version full rev. 477 (Mar 23, 2006) Version full rev. 451 (Mar 4, 2006) Version r2935 Release Date: Sep 26, 2018 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2901 Release Date: Jan 20, 2018 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2893 Release Date: Dec 26, 2017 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2851 Release Date: Jun 27, 2017 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2833 Release Date: May 27, 2017 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2762 (Jan 30) Release Date: Jan 31, 2017 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2762 Release Date: Jan 25, 2017 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2744 Release Date: Dec 4, 2016 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2705 Release Date: Jul 6, 2016 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2694 Release Date: Apr 21, 2016 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2692 Release Date: Apr 19, 2016 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2665 Release Date: Jan 19, 2016 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2664 Release Date: Jan 18, 2016 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2638 Release Date: Oct 12, 2015 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2597 Release Date: Aug 20, 2015 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2579 Release Date: Jul 27, 2015 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2538 Release Date: Feb 26, 2015 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2525 Release Date: Dec 23, 2014 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2491 Release Date: Nov 14, 2014 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2479 Release Date: Aug 27, 2014 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2453 Release Date: Jul 21, 2014 Download(s): x264.exe (32-bit) Version r2431 Release Date: Apr 23, 2014 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2409 Release Date: Mar 14, 2014 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2389 Release Date: Jan 22, 2014 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2377 Release Date: Oct 31, 2013 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2356 Release Date: Aug 26, 2013 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2345 Release Date: Jul 10, 2013 Download(s): x264.exe (32-bit) x264.exe (64-bit) Version r2334 Release Date: May 22, 2013 Please refer to the changelog http://mirror03.x264.nl/x264/changelog.txt for a full list of changes Version r2310 Release Date: May 6, 2013 Fix two bugs in slice-min-mbs and slices-max Slices-max broke slice-max-size when slice-max wasn't used. Slice-min-mbs broke in rare cases near the end of a threadslice. Version r2309 Release Date: Apr 26, 2013 Please refer to the changelog http://mirror03.x264.nl/x264/changelog.txt for a full list of changes Version r2273 Release Date: Mar 1, 2013 Please refer to the changelog http://mirror03.x264.nl/x264/changelog.txt for a full list of changes Version r2245 Release Date: Jan 11, 2013 Please refer to the changelog http://mirror03.x264.nl/x264/changelog.txt for a full list of changes Version r2230 Release Date: Nov 10, 2012 Please refer to the changelog http://mirror03.x264.nl/x264/changelog.txt for a full list of changes Version r2216 Release Date: Sep 18, 2012 Please refer to the changelog http://mirror03.x264.nl/x264/changelog.txt for a full list of changes Version r2208 Release Date: Jul 19, 2012 Revert r2204 - People don't seem to like this so I'm just going to get rid of it. Version r2207 Release Date: Jul 18, 2012 Please refer to the changelog http://mirror03.x264.nl/x264/changelog.txt for a full list of changes Version r2200 Release Date: May 23, 2012 Please refer to the changelog http://mirror03.x264.nl/x264/changelog.txt for a full list of changes Version r2197 Release Date: Apr 26, 2012 Please refer to the changelog http://mirror03.x264.nl/x264/changelog.txt for a full list of changes Version r2184 Release Date: Mar 13, 2012 Fix clobbering of mutex/cvs Regression in r2183. Bizarrely seemed to work on many platforms, but crashed on win64 and may have been slower. Only affected sliced threads during encoding, but could cause crashes on x264 encoder close even without sliced threads. Version r2183 Release Date: Mar 8, 2012 Please refer to the changelog http://mirror03.x264.nl/x264/changelog.txt for a full list of changes Version r2146 Release Date: Feb 9, 2012 Please refer to the changelog http://mirror03.x264.nl/x264/changelog.txt for a full list of changes Version r2145 Release Date: Jan 16, 2012 Please refer to the changelog http://mirror02.x264.nl/x264/changelog.txt for a full list of changes Version r2120 Release Date: Dec 7, 2011 Fix regression in r2118 Broke trellis with i16x16 macroblocks. Version r2119 Release Date: Dec 7, 2011 Please refer to the changelog http://mirror02.x264.nl/x264/changelog.txt for a full list of changes Version r2106 Release Date: Oct 23, 2011 Please refer to the changelog http://mirror02.x264.nl/x264/changelog.txt for a full list of changes Version r2085 Release Date: Sep 22, 2011 Please refer to the changelog http://mirror02.x264.nl/x264/changelog.txt for a full list of changes Version r2074 Release Date: Aug 25, 2011 Please refer to the changelog http://mirror02.x264.nl/x264/changelog.txt for a full list of changes Version r2057 Release Date: Aug 11, 2011 Please refer to the changelog http://mirror02.x264.nl/x264/changelog.txt for a full list of changes Version r2044 Release Date: Jul 31, 2011 r2044: Use assembly versions of some deblocking functions in MBAFF r2043: Move X264_VERSION / X264_POINTVER from config.h to x264_config.h This makes them available to external programs as part of the public API. r2042: Fix padding bug in x264_expand_border_mbpair r2041: Timecode parsing: Add missing initialization Fix crash when failed to parse timecode file before malloc pts. Fix detection of user timebase considered to be exceeding H.264 maximum. r2040: Fix crash with high bitdepth 4:2:0 input r2039: x86 asm cosmetics Use FDEC_STRIDEB where appropriate. r2038: Fix a bug in lossless sub-8x8 RD Caused crashes in rare cases with lossless encoding. Regression in 4:4:4. Version r2037 Release Date: Jul 23, 2011 Please refer to the changelog http://mirror02.x264.nl/x264/changelog.txt for a full list of changes Version r2019 Release Date: Jul 11, 2011 Please refer to the changelog http://mirror02.x264.nl/x264/changelog.txt for a full list of changes Version r2008 Release Date: Jun 15, 2011 Please refer to the changelog http://mirror02.x264.nl/x264/changelog.txt for a full list of changes Version r1995 Release Date: May 13, 2011 Please refer to the changelog http://mirror02.x264.nl/x264/changelog.txt for a full list of changes Version r1947 Release Date: Apr 27, 2011 r1947: Precalculate CABAC initialization contexts Slightly faster encoding with lots of slices. r1946: Avoid redundant log2f calls in mv cost initialization Saves around 100 million clock cycles on x264 init. r1945: CABAC residual: cleanup and optimizations Also kill all Hungarian notation while we're at it. Trim an instruction off cabac_encode_bypass. r1944: Validate input parameters more carefully Get rid of redundant warnings upon encoder_reconfig calls. Also avoid encoder_reconfig turning off psy_rd/trellis. r1943: Fix VFR MB-tree to work as intended Should improve quality with FPSs much larger or smaller than 25. r1942: Support more recent GPAC versions r1941: Fix decoder desync with positive --chroma-qp-offset and zones r1940: Use AVMEDIA_TYPE_VIDEO instead of deprecated CODEC_TYPE_VIDEO Fixes build with lavf/lavc 53. r1939: Force pic-struct for Blu-ray compat + fake-interlaced r1938: Fix open-gop with no-psy Version r1937 Release Date: Apr 15, 2011 Fix build with disabled asm Version r1936 Release Date: Apr 15, 2011 r1936: Improve Blu-ray compliance Use dec_ref_pic_marking SEIs to repeat B-ref referencing information. Don't allow B-frames to reference frames outside their minigop. r1935: Consolidate Blu-ray hacks into --bluray-compat This option is now required for Blu-ray compatibility. --open-gop bluray is now gone (using bluray-compat and open-gop implies a Blu-ray compatible open-gop). This option doesn't automatically enforce every aspect of Blu-ray compatibility (e.g. resolution, framerate, level, etc). r1934: Add SSE support to rectangle.h for 16-byte stores Uses GCC vector intrinsics; may be suboptimal on particularly old GCC versions. r1933: Do not force Intel Compiler to target pre-mmx architecture for x86 Caused a speed penalty against gcc equivalents. r1932: Warn users when using --(psnr\|ssim) without --tune (psnr\|ssim) This is a counter to the proliferation of incredibly stupid psnr/ssim "benchmarks" of x264 in which the benchmarker conveniently "forgot" --tune psnr/ssim, crippling x264 in the test. r1931: Remove redundant mbcmp calls in weightp analysis r1930: Use integer math for filler size calculation r1929: Disable progress for FFMS input with --no-progress r1928: Fix bug in intra-refresh ratecontrol Row SATDs were slightly incorrect. r1927: Cosmetics: fix some signedness issues found by -Wsign-compare r1926: Minor fixes Fix a comment typo. Align an array properly. Make x264_scan8 unsigned: saves a bunch of movsxd instructions on x86_64. r1925: Improve C99 support checks in configure Fixes configuration with Intel compiler in some cases. Version r1924 Release Date: Mar 27, 2011 Please refer to the changelog http://mirror02.x264.nl/x264/changelog.txt for a full list of changes Version r1913 Release Date: Feb 19, 2011 Please refer to the changelog http://mirror02.x264.nl/x264/changelog.txt for a full list of changes Version r1900 Release Date: Feb 7, 2011 Please refer to the changelog http://mirror02.x264.nl/x264/changelog.txt for a full list of changes Version r1884 Release Date: Jan 30, 2011 r1884: Hotfix for some bugs in VBV emergency r1883: Fix warnings in cpu.c Version r1882 Release Date: Jan 29, 2011 Please refer to the changelog http://mirror01.x264.nl/x264/changelog.txt for a full list of changes Version r1867 Release Date: Jan 11, 2011 Please refer to the changelog http://mirror01.x264.nl/x264/changelog.txt for a full list of changes Version r1834 Release Date: Dec 15, 2010 Please refer to the changelog http://mirror01.x264.nl/x264/changelog.txt for a full list of changes Version r1820 Release Date: Dec 8, 2010 Please refer to the changelog http://mirror01.x264.nl/x264/changelog.txt for a full list of changes Version r1804 Release Date: Nov 26, 2010 Please refer to the changelog http://mirror01.x264.nl/x264/changelog.txt for a full list of changes Version r1790 Release Date: Nov 23, 2010 r1790: Fix resize filter rounding code r1789: Fix regression in chroma weightp Missing cache calls could cause artifacts, encoder/decoder desync. Version r1788 Release Date: Nov 21, 2010 Please refer to the changelog http://mirror01.x264.nl/x264/changelog.txt for a full list of changes Version r1772 Release Date: Nov 15, 2010 r1772: Improve flash detection algorithm change in r1765 Now only disables scenecuts only near real end of video, not just prior to forced keyframes. r1771: Update ffms2 support for its latest API break. r1770: Modify the x264 header accordingly if --disable-gpl is used r1769: Save a bit of memory with weightp + high bit depth r1768: Fix bugs in qpfile parsing with omitted QPs r1767: Fix HRD with intra-refresh x264 was incorrectly calculating cpb_removal_delay with respect to the first keyframe. It should have been calculating cpb_removal_delay with respect to the last keyframe. Version r1766 Release Date: Nov 11, 2010 Please refer to the changelog http://mirror01.x264.nl/x264/changelog.txt for a full list of changes Version r1745 Release Date: Oct 11, 2010 r1745: Address remaining cacheline split issues in avg2 Slightly improved performance on core 2. Also fix profiling misattribution of w8/16/20 mmxext cacheline loops. r1744: Trim a few bytes off some x86 intra pred functions r1743: Move DTS compression from libx264 to x264cli DTS compression is an ugly stupid hack and starting to encroach on unrelated areas like VBV. Some people want it in the mp4 muxer for devices and/or splitters that don't support Edit Boxes. We just say "throw these broken devices out the window". DTS compression will remain as a muxer option, --dts-compress, at the user's own risk. This option is disabled by default. r1742: Use a larger pic_init_qp with high bit depth Modify pic_init_qs for consistency. r1741: Update some of the information in doc/ r1740: Update header in depth.c r1739: Remove some old unused stuff in the build tree Regression test (hasn't been updated since svn). Doxy (was never used). r1738: Various cosmetics Exorcise some CamelCase. r1737: Add missing mod4 stack check to sse2_misalign mc_chroma Required for ICC compilation. r1736: Fix 2pass ratecontrol with --nal-hrd cbr r1735: Fix minor bug in intra pred with intra refresh i8x8 blocks didn't properly avoid predicting from top-right when necessary. This could cause intra refresh to not completely refresh the frame. r1734: Fix filter parsing with --extra-cflags="-DNDEBUG" r1733: Make sigint handler variable volatile Didn't actually cause any problems, but is necessary because it can be modified by another thread (the signal call). Version r1732 Release Date: Sep 28, 2010 r1732: Add High 10 Intra profile support (AVC-Intra) x264 should now be able to encode compliant AVC-Intra 50. With a 10-bit-compiled version of x264, a sample commandline for 1080i25 might be: --interlaced --keyint 1 --vbv-bufsize 2000 --bitrate 50000 --vbv-maxrate 50000 --nal-hrd cbr Also print "Constrained Baseline" for baseline profile, since that's all x264 (and everything else in the world) supports. Also reorganize parameter validation a bit to reduce some spurious warnings. r1731: Finish support for high-depth video throughout x264 Add support for high depth input in libx264. Add support for 16-bit colorspaces in the filtering system. Add support for input bit depths in the interval [9,16] with the raw demuxer. Add a depth filter to dither input to x264. r1730: Chroma mode decision/subpel for B-frames Improves compression ~0.4-1%. Helps more on videos with lots of chroma detail. Enabled at subme 9 (preset slower) and higher. r1729: Various cosmetics r1728: Make slice-max-size more aggressive in considering escape bytes The x264 assumption of randomly distributed escape bytes fails in the case of CABAC + an enormous number of identical macroblocks. This patch attempts to compensate for this. It is probably safe to assume in calling applications that x264 practically never violates the slice size limitation. r1727: Add missing emms for dump-yuv r1726: Fix CFR ratecontrol with timebase != 1/fps Fixes VBV + DTS compression, among other things. r1725: Fix DTS/bitrate calculation if the first PTS wasn't zero Fix bitrate calculation with DTS compression. Version r1724 Release Date: Sep 20, 2010 r1724: Fix regression in r1716 r1723: Cosmetics in me.c and frame.c Version r1722 Release Date: Sep 20, 2010 r1722: Add support for arbitrary user SEIs This allows calling applications to insert SEIs that x264 doesn't know about while maintaining HRD/VBV accuracy. r1721: Add full chroma input flag to swscale Improves quality of colorspace conversions involving RGB(A). r1720: Add --disable-gpl option to configure Used for commercially-licensed versions of x264. Doesn't currently change anything, but may be used to disable GPL-only CLI tools, such as video filters, in the future. Also print the x264 license and libavformat license in version info. r1719: Update source file headers Update dates, improve file descriptions, make things more consistent. Also add information about commercial licensing. r1718: Fix intra refresh to not exceed max recovery_frame_cnt The spec constrains recovery_frame_cnt to [0, MaxFrameNum-1]. So make MaxFrameNum bigger in the case of intra refresh. r1717: Make intra refresh finish one frame faster In some cases, the last frame of intra refresh was redundant. Saves a few bits. r1716: Fix intra refresh to not predict from invalid pixels The blocks on the right side of the intra refresh column should not predict from top-right. r1715: Add configure check for mingw64 prefixing This compensates for the inconsistent prefixing seen in different versions of the compiler. r1714: Update some Altivec function prototypes Silences a lot of warnings. Version r1713 Release Date: Sep 4, 2010 r1713: Add support for level 1b This level is a stupid hack in the H.264 spec, so it's a stupid hack in x264 too. Since level is an integer, calling applications need to set level_idc=9 to use it. String-based option handling will accept "1b" just fine though, so CLI users don't have to worry. r1712: Use smaller values for idr_pic_id Saves a few bits and fixes problems on certain fantastically terrible decoders, such as the Apple iPad. r1711: Use POC type 2 for streams with no B-frames Saves a few bits per slice header. r1710: Faster cabac_encode_ue_bypass Use CLZ + a lut instead of a loop. r1709: Faster nal_escape asm r1708: Allow --demuxer forcing with known extensions r1707: Minor fixes/cosmeticcs in commandling parsing r1706: Fix overflow in stats printing r1705: Fix bug in 2pass if the first P-frames are all skip last_qscale_for was read before being initialized in this case, resulting in the value from the previous iteration being used instead. r1704: Don't do deblock-aware RD if deblocking is off Version r1703 Release Date: Aug 25, 2010 r1703: CAVLC "trellis" ~3-10% improved compression with CAVLC. --trellis is now a valid option with CAVLC. Perhaps more importantly, this means psy-trellis now works with CAVLC. This isn't a real trellis; it's actually just a simplified QNS. But it takes enough shortcuts that it's still roughly as fast as a trellis; just not quite optimal. Thus the name is a bit of a misnomer, but we're reusing the option name because it does the same thing. A real trellis would be better, but CAVLC is much harder to trellis than CABAC. I'm not aware of any published polynomial-time solutions that are significantly close to optimal. r1702: Add global #define for maximum reference count This should make it easier to play around with reference frame counts that exceed the spec maximum. r1701: Simplify addressing logic for interlaced-related arrays In progressive mode, just make [0] and [1] point to the same place. r1700: Add missing emms to x264_nal_encode Only matters for applications using the low-latency callback feature. r1699: Fix 2 bugs with slice-max-size Macroblock re-encoding didn't restore mv/tex bit counters (slightly inaccurate 2-pass). Bitstream buffer check didn't work correctly (insanely large frames could break encoding). Version r1698 Release Date: Aug 16, 2010 r1698: NV12 version of Altivec chroma MC r1697: Deblock-aware RD Small quality gain (~0.5%) at lower bitrates, potentially larger with QPRD. May help more with psy, maybe not. Enabled at subme >= 9. Small speed cost (a few %). r1696: Correct X header path usage in configure Don't unconditionally set the header path for OpenBSD but do so if the --enable-visualize flag is specified. r1695: Fix lavf input with delayed frames r1694: Slightly improve the filtering section of x264 --help r1693: Fix debug message typo with DTS compression r1692: Try to guess input length for lavf input Allows printing of progress indicator when using lavf input. r1691: Workaround bug in fps/timestamp handling with lavf input reordered_opaque in lavf doesn't work correctly in the identity case (no reordering). Fixes incorrect output for some file types (e.g. raw in mov). r1690: Fix aspect ratio writing in the MKV muxer The braindead Matroska spec dictates aspect ratio to be measured in pixels instead of, well, an actual aspect ratio. r1689: Add libavcore check in configure Version r1688 Release Date: Jul 29, 2010 r1688: Improve quantizer distribution with sliced-threads+VBV Should help avoid cases of very uneven quantizer choice between slices. r1687: Remove dead code in slicetype.c r1686: Fix incorrect duration/framerate/bitrate in flv header r1685: invalidate_reference fixes invalidate_reference didn't actually invalidate the immediate previous frame, only frames that came before that. Make sure that reordering is forced when invalidate_reference is used, so that the reference list is correct decoder-side. r1684: Filtering system-related fixes Fix configure to check for outdated libavutil in resize filter support. Do not print an explicit error message in ffms when requesting a frame beyond the number of frames in the source. Mention in --help that filtering options can be specified as name=value. Fix the shadowing warning in the resize filter on posix systems. Version r1683* Release Date: Jul 23, 2010 r1683: Improve reference_invalid support Reference invalidation can now be used to invalidate multiple frames at a time, rather than being limited to one per encoder_encode call. r1682: Eradicate all mention of SI/SP-frames Version r1681 Release Date: Jul 22, 2010 Fix stack alignment with MB-tree Broke 2-pass with MB-tree when calling from compilers with broken stack alignment (e.g. MSVC). Version r1680 Release Date: Jul 20, 2010 r1680: Avisynth 2.6 colorspace support Use a customized avisynth_c.h to detect the new planar colorspaces. r1679: Prevent some cases of cache aliasing. Avoid cases where image strides were a large power of 2. Core 2: +3% speed at widths 898..960, +6% at widths 1922..1984, most other resolutions unaffected. Nehalem and AMD: similar amount of speedup, but fewer resolutions affected. r1678: Fix stack alignment for adaptive quant Broke calls from compilers with broken stack alignment (e.g. MSVC). Version r1677 Release Date: Jul 16, 2010 r1677: Fix compilation with shared ffmpeg libs lavf input uses libavutil functions, so it must request flags for libavutil from pkg-config. r1676: Fix another PCM bug CABAC assumes that NNZ is 0 or 1, not the number of actual nonzero coefficients. Didn't actually break the output; only had a tiny effect on RD. Version r1675 Release Date: Jul 15, 2010 Please refer to http://mirror01.x264.nl/x264/changelog.txt for a full list of changes Version r1666 Release Date: Jul 5, 2010 r1666: Support for 9 and 10-bit encoding Output bit depth is specified on compilation time via --bit-depth. There is currently almost no assembly code available for high-bit-depth modes, so encoding will be very slow. Input is still 8-bit only; this will change in the future. Note that very few H.264 decoders support >8 bit depth currently. Also note that the quantizer scale differs for higher bit depth. For example, for 10-bit, the quantizer (and crf) ranges from 0 to 63 instead of 0 to 51. r1665: Support infinite keyint (--keyint infinite). This just means x264 won't insert non-scenecut keyframes. Useful for streaming when using interactive error recovery or some other mechanism that makes keyframes unnecessary. Also change POC logic to limit POC/framenum LSB size (to save bits per slice). Also fix a bug in the CPB underflow detection code (didn't affect the bitstream, just resulted in the failure to print certain warning messages). r1664: Don't check i16x16 planar mode unless previous modes were useful Saves ~160 clocks per MB at subme=1, ~270 per MB at subme>1 (measured on Core i7). Negligle effect on compression. Also make a few more arrays static. r1663: Centralize logging within x264cli x264cli messages will now respect the log level they pertain to. Slightly reduces binary size. r1662: Make open-GOP Blu-ray compatible Blu-ray is even more braindamaged than we thought. Accordingly, open-gop options are now "normal" and "bluray", as opposed to display and coded. Normal should be used in all cases besides Blu-ray authoring. r1661: Callback feature for low-latency per-slice output Add a callback to allow the calling application to send slices immediately after being encoded. Also add some extra information to the x264_nal_t structure to help inform such a calling application how the NAL units should be ordered. Full documentation is in x264.h. r1660: Simplify pixel_ads Version r1659 Release Date: Jun 25, 2010 r1659: Interactive encoder control: error resilience In low-latency streaming with few clients, it is often feasible to modify encoder behavior in some fashion based on feedback from clients. One possible application of this is error resilience: if a packet is lost, mark the associated frame (and any referenced from it) as lost. This allows quick recovery from errors with minimal expense bit-wise. The new i_dpb_size parameter allows a calling application to tell x264 to use a larger DPB size than required by the number of reference frames. This lets x264 and the client keep a large buffer of old references to fall back to in case of lost frames. If no recovery is possible even with the available buffer, x264 will force a keyframe. This initial version does not support B-frames or intra refresh. Recommended usage is to set keyint to a very large value, so that keyframes do not occur except as necessary for extreme error recovery. Full documentation is in x264.h. Move DTS/PTS calculation to before encoding each frame instead of after. Improve documentation of x264_encoder_intra_refresh. r1658: Lookaheadless MB-tree support Uses past motion information instead of future data from the lookahead. Not as accurate, but better than nothing in zero-latency compression when a lookahead isn't available. Currently resets on keyframes, so only available if intra-refresh is set, to avoid pops on non-scenecut keyframes. Not on by default with any preset/tune combination; must be enabled explicitly if --tune zerolatency is used. Also slightly modify encoding presets: disable rc-lookahead in the fastest presets. Enable MB-tree in "veryfast", albeit with a very short lookahead. r1657: Open-GOP support Allows B-frames immediately prior to keyframes (in display order). This helps reduce keyframe popping and improve compression with short keyframe intervals. Due to a staggering display of braindamage in the Blu-ray spec, two open-GOP modes are available. The two modes calculate keyframe interval differently: one based on coded distance and one based on display distance. The latter is superior compression-wise, but for no comprehensible reason, Blu-ray requires the former if open-GOP is used. r1656: Use threadpools to avoid unnecessary thread creation Tiny performance improvement with fast settings and lots of threads. May help more on some OSs with slow thread creation, like OS X. Unify inconsistent synchronized abbreviations to sync. r1655: Improve 2-pass bitrate prediction Adapt based on distance to the end in bits, not in frames. Helps in videos with absurdly simple end sections, e.g. black frames. r1654: SSE4 and SSSE3 versions of some intra_sad functions Primarily Nehalem-optimized. r1653: Improve HRD accuracy In a staggering display of brain damage, the spec requires all HRD math to be done in infinite precision despite the output being of quite limited precision. Accordingly, convert buffer management to work in units of timescale. These accumulating rounding errors probably didn't cause any real problems, but might in theory cause issues in very picky muxers on extremely long-running streams. r1652: Use -fno-tree-vectorize to avoid miscompilation Some versions of gcc have been reported to attempt (and fail) to vectorize a loop in plane_expand_border. This results in a segfault, so to limit the possible effects of gcc's utter incompetence, we're turning off vectorization entirely. It's not like it ever did anything useful to begin with. r1651: Fix SIGPIPEs caused by is_regular_file checks Check to see if input file is a pipe without opening it. r1650: Fix compilation on ARM w/ Apple ABI Version r1649 Release Date: Jun 15, 2010 r1649: Faster mbtree_propagate asm Replace fp division by multiply with the reciprocal. Only ~12% faster on penryn, but over 80% faster on amd k8. Also make checkasm slightly more tolerant to rounding error. r1648: Convert the OPT_ defines in x264.c to an enum r1647: Don't allow baseline profile streams with fake-interlaced Indicate use of --fake-interlaced in encoding options SEI. r1646: Allocate space for null terminator in param_apply_tune r1645: Fix regression in r1501. Could cause slightly incorrect analysis in rare cases, but no serious encoding issues. Also shut up gcc warning about pels_v. r1644: Fix crash with --subme 0 + --weightp > 0. Regression in r1535 Version r1643 Release Date: Jun 10, 2010 Please refer to the changelogs for a full list of changes Version r1629 Release Date: Jun 3, 2010 r1629: Fix no-mbtree + aq-mode=0 Regression in r1618. r1628: Add API function to fix x264_picture_t initialization Calling applications that do not use x264_picture_alloc need to use x264_picture_init to initialize x264_picture_t structures. Previously, if the calling application didn't zero x264_picture_t, Bad Things could happen. Version r1627 Release Date: Jun 3, 2010 Please refer to the changelogs for a full list of changes Version r1613 Release Date: May 27, 2010 Please refer to the changelogs for a full list of changes Version r1602 Release Date: May 22, 2010 r1602: Fix performance regression in r1582 Set the correct compiler flags. r1601: Rewrite deblock strength calculation, add asm Rewrite is significantly slower, but is necessary to make asm possible. Similar concept to ffmpeg's deblock strength asm. Roughly one order of magnitude faster than C. Overall, with the asm, saves ~100-300 clocks in deblocking per MB. r1600: Fix different output with differing sync-lookahead Also reduce memory consumption. r1599: Mark Win32 executable as large address aware r1598: Add "Fake interlaced" option This encodes all frames progressively yet flags the stream as interlaced. This makes it possible to encode valid 25p and 30p Blu-Ray streams. Also put the pulldown help section in a more appropriate place. r1597: Modify version.sh to output to stdout. Update configure to match. r1596: Set correct filesystem permissions for various files r1595: Fix regression in r1566 Intra stats need to be kept track of for fast intra decision. r1594: Fix rc-lookahead in encoding options SEI in 2-pass with VBV r1593: Reduce memory usage in 2-pass with b-adapt 2 Version r1592 Release Date: May 18, 2010 r1592: Overhaul CABAC: faster, less cache usage Horribly munge up the CABAC tables to allow deduplication of some data. Saves 256 bytes of L1d cache in non-RD, 512 bytes in RD. Add asm versions of bypass and terminal; save L1i cache by re-using putbyte code. Further optimize encode_decision. All 3 primary CABAC functions fit in under 256 bytes of code total on x86_64. r1591: Fix typo in pulldown r1590: Fix bitrate calculation in progress status Was slightly incorrect due to using pts, which is out of order. r1589: Fix crash with sliced-threads on Phenom r1588: Fix condition for printing rc=cbr in options SEI Also fix crf-max formatting. r1587: Shrink even more constant arrays r1586: Add API function to trigger intra refresh Useful for interactive applications where the encoder knows that packet loss has occurred on the client. Full documentation is in x264.h. r1585: Fix intra refresh behavior with I-frames Intra refresh still allows I-frames (for scenecuts/etc). Now I-frames count as a full refresh, as opposed to instantly triggering a refresh. r1584: More cosmetics Version r1583 Release Date: May 7, 2010 Please refer to the changelogs for a full list of changes Version r1570 Release Date: Apr 30, 2010 r1570: r1548 broke subme < 3 + p8x8/b8x8 Caused significantly worse compression. Preset-wise, only affected veryfast. Fixed by not modifying mvc in-place. r1569: More write-combining r1568: Reduce lookahead memory usage, cache missesv Merge lowres_types with lowres_costs. r1567: Fix build on x86 with asm on but SSE off r1566: Don't calculate ref/partition stats if not necessary r1565: Split out MV prediction into mvpred.c Make common/macroblock.c a bit less gigantic. Version r1564 Release Date: Apr 25, 2010 Fix mv predictor clipping on non-x86 (regression in r1548) Version r1563 Release Date: Apr 24, 2010 Please refer to the changelogs for a full list of changes Version r1542 Release Date: Apr 18, 2010 r1542: Fix various early terminations with slices Neighbouring type values (type_top, etc) are now loaded even if the MB isn't available for prediction. Significant overall performance increase (as high as 5-10%+) with lots of slices (e.g. with slice-max-size). r1541: Enable --fast-pskip on fast firstpass r1540: Make interlaced detection in avisynth only apply to field-based input Fixes improper flagging of progressive sources. r1539: Set psy=0 in lossless mode Doesn't actually affect output, just what's written in the SEI. Version r1538 Release Date: Apr 12, 2010 Please refer to the changelogs for a full list of changes Version r1523 Release Date: Apr 8, 2010 Please refer to the changelogs for a full list of changes Version r1510 Release Date: Mar 29, 2010 Please refer to the changelogs for a full list of changes Version r1471 Release Date: Feb 28, 2010 Please refer to the changelogs for a full list of changes Version r1462 Release Date: Feb 24, 2010 Please refer to the changelogs for a full list of changes Version r1442 Release Date: Feb 15, 2010 Please refer to the changelogs for a full list of changes Version r1416 Release Date: Jan 31, 2010 Please refer to the changelogs for a full list of changes Version r1400 Release Date: Jan 21, 2010 r1400: Use cross-prefix properly with pkg-config for cross-compiling r1399: Various performance optimizations Simplify and compact storage of direct motion vectors, faster --direct auto. Shrink various arrays to save a bit of cache. Simplify and reorganize B macroblock type writing in CABAC. Add some missing ALIGNED macros. r1398: Fix crash on new AMD M300 and similar CPUs Apparently these CPUs have SSE4a, but not misaligned SSE. r1397: Fix intra refresh with subme < 6 Also improve the quality of intra masking. r1396: Add support for multiple --tune options Tunes apply in the order they are listed in the case of conflicts. Psy tunings, i.e. film/animation/grain/psnr/ssim, cannot be combined. Also clarify --profile, which forces the limits of a profile, not the profile itself. r1395: Various bugfixes and tweaks in analysis Fix the oldest-ever bug in x264: b16x8 analysis used the wrong width for predict_mv. Fix cache_ref calls for slightly better MV prediction in bsub16x16 analysis. Make B-partition analysis consider reference frame costs. Various other minor changes. Overall very slightly improved mode decision and motion search in B-frames. r1394: More --me tesa optimizations r1393: Fix typo in configure r1392: Make --fps force CFR mode Version r1391 Release Date: Jan 15, 2010 Please refer to the changelogs for a full list of changes Version r1376 Release Date: Dec 16, 2009 r1376: Don't do sum/ssd analysis if weightp == 1 Typo fixes in comments and help. r1375: Fix two bugs in 2-pass ratecontrol last_qscale_for wasn't set during the 2pass init code. abr_buffer was way too small in the case of multiple threads, so accordingly increase its buffer size based on the number of threads. May significantly increase quality with many threads in 2-pass mode, especially in cases with extremely large I-frames, such as anime. r1374: Avisynth-MT and 2.6 compatibility fixes Explain to the user why YV12 conversion is forced with Avisynth 2.6. Fix encoding with Avisynth-MT scripts by inserting the necessary Distributor() call; speeds such scripts back up to expected levels. Version r1373 Release Date: Dec 11, 2009 r1373: Fix zone parsing on mingw Due to MinGW evidently being in the hands of a pack of phenomenal idiots, MinGW does not have strtok_r, a basic string function. As such, remove the dependency on strtok_r in zone parsing. Previously, using zones for anything other than ratecontrol failed. r1372: More lookahead optimizations Under subme 1, don't do any qpel search at all and round temporal MVs accordingly. Drop internal subme with subme 1 to do fullpel predictor checks only. Other minor optimizations. r1371: Various minor missing changes from previous commits Boolify sliced threads too Remove unused constants from dct-a.asm Fix a few typos/minor errors in preset documentation r1370: Fix regression in direct=auto/temporal in r1364 Bug caused rare race condition in frame reference handling. This resulted in invalid bitstreams in some B-frames and, very rarely, crashes. Version r1369 Release Date: Dec 10, 2009 r1369: Add fast pskip to x264 SEI info header r1368: Minor seeking fix with Avisynth input Seeking past the end of the input with --seek would result in the same frame being repeated over and over. r1367: Add support for MB-tree + B-pyramid Modify B-adapt 2 to consider pyramid in its calculations. Generally results in many more B-frames being used when pyramid is on. Modify MB-tree statsfile reading to handle the reordering necessary. Make differing keyint or pyramid between passes into a fatal error. r1366: Use aliasing-avoidance macros in array_non_zero r1365: MMX version of 8x8 interlaced zigzag Just as fast as SSSE3 on Nehalem (and faster on Conroe/Penryn), so remove the SSSE3 version. r1364: Bring back slice-based threading support Enabled with --sliced-threads Unlike normal threading, adds no encoding latency. Less efficient than normal threading, both performance and compression-wise. Useful for low-latency encoding environments where performance is still important, such as HD videoconferencing. Add --tune zerolatency, which eliminates all x264 encoder-side latency (no delayed frames at all). Some tweaks to VBV ratecontrol and lookahead (in addition to those required by sliced threading). Commit sponsored by a media streaming company that wishes to remain anonymous. r1363: Add more detailed help for presets/tunes/profiles Shows what options they represent. r1362: qpel RD no longer needs mbcmp_unaligned Version r1361 Release Date: Dec 9, 2009 ensure that all boolean options are {0,1} so they print consistently in the options SEI Version r1360 Release Date: Dec 6, 2009 r1360: Actually do r1356 Somehow commit r1356 got lost in the ether. I'm not sure how, but now it's fixed. r1359: Remove some unused code from x264.c r1358: SSSE3 version of zigzag_8x8_field Slightly faster interlaced encoding with 8x8dct. Helps most on Nehalem, somewhat disappointing on Conroe/Penryn. r1357: Fix crash in interlaced with >8 refs Crash introduced in weightp. r1356: Significantly faster qpel-RD Cache the results of MC, like in bidir-RD. Slightly changes output due to the necessary reordering of satd/RD calls. 5-10% faster qpel-RD. r1355: Add x264 prefix to functions with ffmpeg equivalents Not important now, but will be when we add libav* input support. Version r1354 Release Date: Nov 30, 2009 10L in r1353 Broke mp4 output. Version r1353 Release Date: Nov 30, 2009 Enhanced Avisynth input support Requires avisynth_c.h from the Avisynth API headers. Reports errors properly from Avisynth script input. Automatically construct input scripts for almost any input file. Tries ffmpegsource2, DSS2, directshowsource, and many other sourcing methods, based on the input file extension. Automatically converts to YV12. Version r1352 Release Date: Nov 28, 2009 r1352: Much faster weightp Move sum/ssd calculation out of lookahead and do it only once per frame. Also various minor optimizations, cosmetics, and cleanups. r1351: Fix bugs in fps/timestamp handling in FLV muxer r1350: Fix bug in weightp analysis Weights weren't reset upon early terminations, so old (wrong) weights could stick around. Small compression improvement. r1349: Minor deblocking optimization, update comments r1348: Fix weightb with delta_poc_bottom Has no effect yet, but will be required once we add TFF/BFF signalling support in interlaced mode. Gives 0.5-0.7% better compression with proper TFF/BFF signalling. Version r1347 Release Date: Nov 24, 2009 r1347: Give more meaningful error if 1st/2nd pass resolution differ r1346: Fix extremely rare deadlock with sync-lookahead Patch partially by Anton Mitrofanov. r1345: Only print weightp stats if there were P-frames r1344: Faster lookahead with subme=1 If it hasn't been clear already, don't use subme=1 as a "fast first pass" option. Use subme=2 instead; 1 and below now enable a fast (lower quality) lookahead mode. r1343: Faster weightp analysis Modify pixel_var slightly to return the necessary information and use it for weight analysis instead of sad/ssd. Various minor cosmetics. Version r1342 Release Date: Nov 16, 2009 r1342: Fix two issues in weightp If analysis decided on an offset of -128, x264 would create non-compliant streams. Fix some cases with nearly all intra blocks where analysis could pick very weird weights. Also add some asserts to check compliancy. r1341: Allow compilation with non-Apple GCC on OS X r1340: Use __attribute__((may_alias)) for type-punning GCC thinks pointer casts to unions aren't valid with strict aliasing. See http://gcc.gnu.org/onlinedocs/gcc-4.4.2/gcc/Optimize-Options.html#Type_002dpunning. Also use M32() in y4m.c. Enable -Wstrict-aliasing again since all such warnings are fixed. Version r1339 Release Date: Nov 16, 2009 r1339: 100l in deadlock fix r1338: FLV muxing support r1337: Fix rare deadlock introduced in weightp Version r1336 Release Date: Nov 14, 2009 r1336: Actually add -Wno-strict-aliasing to configure r1335: Various weightp fixes Make weightp results match in threaded vs non-threaded mode. Fix two-pass with slow-firstpass. r1334: Fix all aliasing violations New type-punning macros perform write/read-combining without aliasing violations per the second-to-last part of 6.5.7 in the C99 specification. GCC 4.4, however, doesn't seem to have read this part of the spec and still warns about the violations. Regardless, it seems to fix all known aliasing miscompilations, so perhaps the GCC warning generator is just broken. As such, add -Wno-strict-aliasing to CFLAGS. r1333: Fix 10l in weightp on ARM Version r1332 Release Date: Nov 10, 2009 Fix one (of possibly many) miscompilations in weightp Use NOINLINE and some emms calls to fix emms reordering issues. This issue occurred with some GCC versions if threads > 1 and the phase of the moon was right. Also a cosmetic in x264.c. Version r1331 Release Date: Nov 10, 2009 Fix pixel_ssd on win64 Didn't preserve XMM registers, may or may not have caused problems. Version r1330 Release Date: Nov 9, 2009 r1330: Fix weightp logfile parsing on MinGW r1329: cosmetics r1328: Fix weightp on ARM + PPC No ARM or PPC assembly yet though. r1327: Weighted P-frame prediction Merge Dylan's Google Summer of Code 2009 tree. Detect fades and use weighted prediction to improve compression and quality. "Blind" mode provides a small overall quality increase by using a -1 offset without doing any analysis, as described in JVT-AB033. "Smart", the default mode, also performs fade detection and decides weights accordingly. MB-tree takes into account the effects of "smart" analysis in lookahead, even further improving quality in fades. If psy is on, mbtree is on, interlaced is off, and weightp is off, fade detection will still be performed. However, it will be used to adjust quality instead of create actual weights. This will improve quality in fades when encoding in Baseline profile. Doesn't add support for interlaced encoding with weightp yet. Only adds support for luma weights, not chroma weights. Internal code for chroma weights is in, but there's no analysis yet. Baseline profile requires that weightp be off. All weightp modes may cause minor breakage in non-compliant decoders that take shortcuts in deblocking reference frame checks. "Smart" may cause serious breakage in non-compliant decoders that take shortcuts in handling of duplicate reference frames. Thanks to Google for sponsoring our most successful Summer of Code yet! r1326: Fix assert failure in the case of forced i-frames Note that this applies to non-IDR i-frames, not IDR-frames. This fix is also required for future open-gop. r1325: Fix issues relating to input/output files being pipes/FIFOs r1324: Various ARM-related fixes Fix comment for mc_copy_neon. Fix memzero_aligned_neon prototype. Update NEON (i)dct_dc prototypes. Duplicate x86 behavior for global+hidden functions. r1323: Fix miscompilation with gcc 4.3 on ARM Aliasing violation in spatial prediction caused nasty artifacts. Shut up two other GCC warnings while we're at it. r1322: Fix extremely rare infinite loop in 2-pass VBV Implicit conversion from double->float lost enough precision to cause the loop termination condition to never trigger. Bug report by Tal Aloni. r1321: Fix large file support, broken in r1302 r1320: Dramatically reduce size of pixel_ssd_* asm functions ~10k of code size eliminated. r1319: fix bottom-right pixel of lowres planes, which was uninitialized. weirdly, valgrind reported this only with --no-asm. Version r1318 Release Date: Oct 31, 2009 r1318: Further reduce code size in bime ~7-8 kilobytes saved, ~0.6% faster subme 9. r1317: Fix case in which MB-tree didn't propagate all data correctly Should improve quality in all cases. Also some minor cosmetic improvements. r1316: Take into account chroma MV offset during interlaced motion search Small improvement in interlaced compression. r1315: Slightly faster ssse3 width4 chroma MC Cacheline-aware in the same fashion as width8, but not conditional. r1314: Eliminate some rare cases where MB-tree gave incorrect results in B-frames Also get rid of some unnecessary memcpies. r1313: Fix cases in which b-adapt 1 could result in AUTO-type frames. This didn't actually cause any issues, but it removes the need for the fixing-up code that prevented said issues. r1312: Motion compensation optimizations Turning off inlining saves a whole boatload of code size for near-zero speed cost. Simplify offset calculation. Various other optimizations. r1311: Minor CAVLC optimizations Version r1310 Release Date: Oct 26, 2009 cosmetics Version r1309 Release Date: Oct 26, 2009 r1309: ISC-license x86inc.asm As the assembly abstraction layer is very useful in non-x264 projects, it is now ISC (simplified BSD) so that others, even in commercial projects, can use it as well. r1308: Various minor CABAC optimizations r1307: Fix bug in b-pyramid strict Bug caused invalid streams in some situations. r1306: Remove non-mod16 warning Compression only "suffers" by an extremely marginal amount and too many people misinterpret the warning. r1305: Fix two warnings + some minor optimizations r1304: Fix a typo in b-pyramid help And an errant space in common/macroblock.c r1303: A bit more write-combining in macroblock_cache_load Version r1302 Release Date: Oct 25, 2009 split muxers.c into one file per format simplify internal muxer API Version r1301 Release Date: Oct 20, 2009 r1301: Update fprofile with the latest change to b-pyramid r1300: Fix assertion fail and incorrect costs with pyramid+VBV Deal properly with QPfile'd B-refs. x264 should handle multiple B-refs per minigop now, though only via forced frametypes. r1299: Improve CRF initial QP selection, fix get_qscale bug If qcomp=1 (as in mb-tree), we don't need ABR_INIT_QP. get_qscale could give slightly weird results with still images r1298: Print more accurate error message if dump_yuv fails r1297: Reduce memory usage of b-adapt 2 trellis Also fix a minor bug where the algorithm ignored the last frame in the trellis. r1296: Make B-pyramid spec-compliant The rules of the specification with regard to picture buffering for pyramid coding are widely ignored. x264's b-pyramid implementation, despite being practically identical to that proposed by the original paper, was technically not compliant. Now it is. Two modes are now available: 1) strict b-pyramid, while worse for compression, follows the rule mandated by Blu-ray (no P-frames can reference B-frames) 2) normal b-pyramid, which is like the old mode except fully compliant. This patch also adds MMCO support (necessary for compliant pyramid in some cases). MB-tree still doesn't support b-pyramid (but will soon). r1295: Add missing free for nal_buffer Fixes a memory leak. r1294: sync yasm macros to ffmpeg r1293: eliminate some divisions Version r1294 Release Date: Oct 19, 2009 r1294: sync yasm macros to ffmpeg r1293: eliminate some divisions Version r1292 Release Date: Oct 13, 2009 r1292: Fix glitches with slow-firstpass + weightb + multiref + 2pass Bug in r1277 r1291: Simplify some code in b-adapt 2's trellis r1290: Fix a very rare integer overflow in slicetype analysis Caused an assert failure when it occurred. Bug is as old as adaptive B-frames. r1289: Reduce the aggressiveness of 2-pass VBV Now that B-frames are properly covered, we don't have to be as aggressive. This eliminates some issues with skyrocketing QPs in B-frames in 2-pass VBV. Version r1288 Release Date: Oct 13, 2009 r1288: Fix regression: disable flash detection without B-frames r1287: change all dct arrays to 1d. the C standard doesn't allow you to iterate 1-dimensionally over 2d arrays, and nothing other than the dsp functions themselves cares about the 2dness of dct. this fixes a miscompilation in x264_mb_optimize_chroma_dc. r1286: Add row-based VBV for B-frames While B-frames still aren't explicitly covered by ratecontrol, this should resolve issues of VBV underflows due to larger-than-expected B-frames. r1285: Improve VBV, fix bug in 2-pass VBV introduced in MB-tree Bug caused AQ'd row/frame costs to not be calculated (and thus caused underflows). Also make VBV more aggressive with more threads in 2-pass mode. Finally, --ratetol now affects VBV aggressiveness (higher is less aggressive). r1284: Optimize exp2fix8 Slightly faster and more accurate rounding. r1283: Avoid scenecuts in flashes and similar situations "Flashes" are defined as any scene which lasts a very short period before a previous scene returns. A common example of this is of course a camera flash. Accordingly, look ahead during scenecut analysis and rule out the possibility of certain frames being scenecuts. Also handles cases of tons of short scenes in sequence and avoids making those scenecuts as well. Can only catch flashes of 1 frame in length with b-adapt 1. With b-adapt 2, can catch flashes of length --bframes. Speed cost should be negligible. r1282: Fix bug where x264 generated non-compliant bitstreams with insane SAR values Version r1281 Release Date: Oct 8, 2009 r1281: rm msvc project files and related ifdefs r1280: SSE4 version of 4x4 idct 27->24 clocks on Nehalem. This is really just an excuse to use "movsd" in a real function. Add some comments to subsum-related macros in x86util. r1279: Constrained intra prediction support Enable with --constrained-intra. Significantly reduces compression, but required for the base layer of SVC encodes and maybe some other use-cases. Commit sponsored by a media streaming company that wishes to remain anonymous. r1278: Slightly improve non-RD p8x8 mode decision Subpartition costs are effectively zero in CABAC if sub-8x8 search is off. r1277: Reorder reference frames optimally on second pass About +0.1-0.2% compression at normal bitrates, up to +1% at very low bitrates. Only works if the first pass uses the same number of refs as the second (i.e. not with fast first pass). Thus, only worthwhile at insanely slow speeds: as such, enable slow-firstpass by default with preset placebo. Note that this changes the stats file format! r1276: Fix typo in ratecontrol_summary r1275: Clip log2_max_frame_num It's still much higher than it needs to be, but that will be fixed with the upcoming MMCO patch. Also make sure we don't write too large a frame_num or poc in slice header. r1274: Fix some issues with 3-pass statsfile handling The value of i_frame during encoder_close was incorrect. r1273: Fix ctrl-C termation message with few frames encoded r1272: Add support for single-frame VBV, improve compliance This allows both constant-framesize and capped-framesize encoding. Literal constant framesize isn't actually supported yet due to the lack of filler support. Example with 30fps video: --vbv-bufsize 200 --vbv-maxrate 6000 will ensure that no frame is ever larger than 200 kilobits. One example use-case of this is for zero-delay streaming where bandwidth costs need to be minimized. If every frame is smaller than 200 kilobits and the client has a 6 megabit connection, every single frame can be instantly sent to the client and handled without any decoder-side buffer. Fix a mistake in VBV calculation--this may have caused the VBV to be slightly non-compliant in some situations without x264 realizing it. Add primitive prediction handling for rows with quantizers lower than their reference. This slightly improves VBV in CBR mode. Various other minor improvements to VBV, mostly to make single-frame VBV work. Commit sponsored by a media streaming company that wishes to remain anonymous. Version r1271 Release Date: Sep 25, 2009 r1271: Fix 10l in API change frame_num was set to 1, not 0, for the first frame. This broke spec compliance. Didn't actually seem to cause any problems though except for breaking decoding on Quicktime. r1270: Allow user-set FPS for inputs other than YUV r1269: Improve threaded frame handling Avoid unnecessary cond_wait Version r1268 Release Date: Sep 24, 2009 r1268: Attempt to detect miscompilation due to bug in gcc 4.2 I don't know if this bug still affects latest x264, but it can't hurt to try to detect it. Accordingly refuse to open the encoder if detected. Apparently VLC (on Windows) has been distributed for some time with a completely broken x264 due to the use of a completely broken compiler (gcc 4.2). In particular, the MV costs seem to be calculated incorrectly on win32 when linking from an application compiled without -ffast-math to an application with -ffast-math. I am not entirely certain why this occurs, but the result is, unsurprisingly, encoding quality that makes MPEG-2 look good, due to the motion search being completely broken. r1267: Really fix encoder_close crash this time Not-entirely-fixed in r1253. r1266: Check for 16x16 partitions masquerading as smaller ones Saves a few bits when using qpel-RD. r1265: Update config.guess/sub; add Snow Leopard support r1264: Fix integer overflow in 2-pass VBV Bug caused slight undersizing in 2-pass mode in some cases. r1263: Fix bug with various bizarre commandline combinations and mbtree Second pass would have mbtree on even though the first pass didn't (and thus encoding would immediately fail). r1262: Add intra prediction modes to output stats Also eliminate some NANs in stat output with intra-only encoding. Marginal speedup: disable stat calculation if log level is below X264_LOG_INFO. Various minor cosmetics. r1261: Overhaul syntax in muxers.c/matroska.c The inconsistent syntax in these files has finally come to an end. r1260: Major API change: encapsulate NALs within libx264 libx264 now returns NAL units instead of raw data. x264_nal_encode is no longer a public function. See x264.h for full documentation of changes. New parameter: b_annexb, on by default. If disabled, startcodes are replaced by sizes as in mp4. x264's VBV now works on a NAL level, taking into account escape codes. VBV will also take into account the bit cost of SPS/PPS, but only if b_repeat_headers is set. Add an overhead tracking system to VBV to better predict the constant overhead of frames (headers, NALU overhead, etc). Version r1259 Release Date: Sep 15, 2009 r1259: Add missing fclose for mbtree input statsfile on second pass Bug report by VFRmaniac r1258: Improve progress indicator behavior Progress indicator will now indicate based on output frame, not input frame. r1257: Update yasm configure check lzcnt apparently requires yasm 0.6.2. r1256: Make MV costs global instead of static Fixes some extremely rare threading race conditions and makes the code cleaner. Downside: slightly higher memory usage when calling multiple encoders from the same application. r1255: Don't print scenecut message multiple times in verbose mode Occurred mostly with b-adapt 2. r1254: Optimize rounding of luma and chroma DC coefficients Reduce bitrate mostly-losslessly at low quantizers. In some rare cases, bitrate reduction may be as high as 10%. Luma rounding optimization (helps much less than chroma) requires trellis. r1253: Fix crash if encoder_close is called before delayed frames are flushed Also no longer flush frames when ctrl-Cing x264, so x264 will close faster. r1252: Improve x264 help Now has three help options: --help, --longhelp, and --fullhelp. --help only shows the most basic options; most users should not need more than these. Add usage examples. Fix typo in a comment. Version r1251 Release Date: Sep 7, 2009 r1251: Factor out a redundant RD call in qpel-RD Fixes a problem that was supposed to be, but didn't, get fully fixed in r1238. r1250: Fix RD early-skip Small quality improvement and speedup, was broken by r1214. r1249: Faster CAVLC mb header writing for B macroblocks r1248: Compile fixes for pre-ARMv6T2 and/or PIC Version r1247 Release Date: Sep 3, 2009 Change priority handling on some OSs Instead of setting the lookahead thread to max priority, lower all the other threads' priorities instead. This is particularly useful when the "max priority" is "realtime", as in Windows, which can cause some problems. Version r1246 Release Date: Sep 2, 2009 r1246: Threaded lookahead Move lookahead into a separate thread, set to higher priority than the other threads, for optimal performance. Reduces the amount that lookahead bottlenecks encoding, greatly increasing performance with lookahead-intensive settings (e.g. b-adapt 2) on many-core CPUs. Buffer size can be controlled with --sync-lookahead, which defaults to auto (threads+bframes buffer size). Note that this buffer is separate from the rc-lookahead value. Note also that this does not split lookahead itself into multiple threads yet; this may be added in the future. Additionally, split frames into "fdec" and "fenc" frame types and keep the two separate. This split greatly reduces memory usage, which helps compensate for the larger lookahead size. Extremely special thanks to Michael Kazmier and Alex Giladi of Avail Media, the original authors of this patch. r1245: Force a link error in case of incompatible API This is because the number of bug reports due to miscompiled ffmpeg builds is reaching critical mass. The name of x264_encoder_open is now #defined based on the current X264_BUILD. Note that this changes the calling convention required for dlopen, but not for ordinary calls to x264_encoder_open. r1244: Get rid of "CBR" descriptor from qcomp Though technically accurate in some vague way, I have never actually seen this option used correctly, rather it has been used by hundreds of people who can't read the documentation and believe that qcomp=0 is what should be used for CBR encoding. Version r1243 Release Date: Sep 1, 2009 r1243: Faster me=tesa But it still spends all too much time in me_search_ref rather than asm. r1243: Multi-slice encoding support Slicing support is available through three methods (which can be mixed): --slices sets a number of slices per frame and ensures rectangular slices (required for Blu-ray). Overridden by either of the following options: --slice-max-mbs sets a maximum number of macroblocks per slice. --slice-max-size sets a maximum slice size, in bytes (includes NAL overhead). Implement macroblock re-encoding support to allow highly accurate slice size limitation. Might be useful for other things in the future, too. r1241: Fix a valgrind warning in b-adapt 2 Version r1240 Release Date: Aug 30, 2009 fix asm symbols for oprofile (regression in r1221) Version r1239 Release Date: Aug 29, 2009 r1239: Fix bug in intra analysis in B-frames i8x8/i4x4 never got analysed when fast_intra was toggled and RD was off; up to a 2-3% quality improvement in non-RD mode. With this bug dating back to r369, this is probably the second-oldest bug ever fixed in x264. r1238: Fix bug in b16x16 qpel RD Incorrect cost was used to initialize the search. r1237: Check minimum chroma QP in addition to luma QP during CQM init Correctly error out if the implied minimum chroma QP is too low. Add missing emms to checkasm macroblock_tree_propagate test. r1236: Faster mbtree propagate and x264_log2, less memory usage Avoid an int->float conversion with a small table. Change lowres_inter_types to a bitfield; cut its size by 75%. Somewhat lower memory usage with lots of bframes. Make log2/exp2 tables global to avoid duplication. Version r1235 Release Date: Aug 27, 2009 r1235: Fix keyint=1 + VBV + rc-lookahead r1234: Faster x264_exp2fix 22->13 cycles on Core 2 with mfpmath=sse r1233: compile x86 with fpmath=sse by default Version r1232 Release Date: Aug 25, 2009 r1232: ARM configure: enable NEON-related options by default When compiling for ARM, x264 will compile by default for Cortex A8 unless specified otherwise. To compile for pre-ARMv6, --disable-asm is required. r1231: 2-pass VBV fixes Properly run slicetype frame cost with 2pass + MB-tree. Slash the VBV rate tolerance in 2-pass mode; increasing it made sense for the highly reactive 1-pass VBV algorithm, but not for 2-pass. 2-pass's planned frame sizes are guaranteed to be reasonable, since they are based on a real first pass, while 1-pass's, based on lookahead SATD, cannot always be trusted. r1230: GSOC merge part 8: ARM NEON intra prediction assembly functions (partial) 4x4 dc/h/ddr/ddl, 8x8 dc/h, 8x8c h/v, 16x16 dc/h/v r1229: GSOC merge part 7: ARM NEON deblock assembly functions (partial) Originally written for ffmpeg by Mans Rullgard; ported by David. Luma and chroma inter deblocking; no intra yet. r1228: GSOC merge part 6: ARM NEON quant assembly functions (partial) (de)quant 4x4, (de)quant 8x8, (de)quant DC, coeff_last r1227: GSOC merge part 5: ARM NEON dct assembly functions (i)dct4x4dc, (i)dct4x4, (i)dct8x8, (i)dct_dc, zigzag_scan_frame_4x4 r1226: GSOC merge part 4: ARM NEON mc assembly functions prefetch, memcpy_aligned, memzero_aligned, avg, mc_luma, get_ref, mc_chroma, hpel_filter, frame_init_lowres r1225: GSOC merge part 3: ARM NEON pixel assembly functions SAD, SADX3/X4, SSD, SATD, SA8D, Hadamard_AC, VAR, VAR2, SSIM r1224: GSOC merge part 2: ARM stack alignment Neither GCC nor ARMCC support 16 byte stack alignment despite the fact that NEON loads require it. These macros only work for arrays, but fortunately that covers almost all instances of stack alignment in x264. r1223: Fix unaligned accesses in bitstream writer Fixes x264 on CPUs with no unaligned access support (e.g. SPARC). Improves performance marginally on CPUs with penalties for unaligned stores (e.g. some x86). Version r1222 Release Date: Aug 21, 2009 r1222: Fix bug in calculation of I-frame costs with AQ. r1221: GSOC merge part 1: Framework for ARM assembly optimizations x264 will detect which ARM core it's building for and only build NEON asm if the target is ARMv6 or above, then enable NEON at runtime. r1220: Fix a bug in checkasm and two OSX fixes MC chroma checkasm test could crash in some situations Remove -lmx, as it's not needed and the iPhone doesn't have it. Remove unused sqrtf emulation; it breaks if math.h is included. r1219: Improve QPRD Always check the last macroblock's QP, even if the normal search doesn't reach it. Raise the failure threshold when moving towards the last macroblock's QP. 0.2-1% improved compression. r1218: Fix MB-tree with keyint<3 Also slightly improve VBV keyint handling. Version r1217 Release Date: Aug 19, 2009 r1217: Fix bug in VBV lookahead + no MB-tree I-frames need to have VBV lookahead run on them as well. r1216: Add support for frame-accurate parameter changes Parameter structs can now be passed with individual frames. The previous method would only change the parameter of what was currently being encoded, which due to delay might be very far from an intended exact frame. Also add support for changing aspect ratio. Only works in a stream with repeating headers and requires the caller to force an IDR to ensure instant effect. r1215: Fix x264_encoder_reconfig with multithreading New behavior: reconfigging the encoder will result in changes being applied to each of the encoding threads as they finish encoding the current frame. Version r1214 Release Date: Aug 18, 2009 r1214: Fix two bugs in QPRD QPRD could in some cases force blocks to skip when they shouldn't be ~(+0.01db) Force QPRD to abide by qpmin/qpmax restrictions. r1213: Lookahead VBV Use the large-scale lookahead capability introduced in MB-tree for ratecontrol purposes. (Does not require MB-tree, however.) Greatly improved quality and compliance in 1-pass VBV mode, especially in CBR; +2db OPSNR or more in some cases. Fix some other bugs in VBV, which should improve non-lookahead mode as well. Change the tolerance algorithm in row VBV to allow for more significant mispredictions when buffer is nearly full. Note that due to the fixing of an extremely long-standing bug (>1 year), bitrates may change by nontrivial amounts in CRF without MB-tree. r1212: Fix bug in b-adapt 1 B-adapt 1 didn't use more than MAX(1,bframes-1) B-frames when MB-tree was off. r1211: Fix a potential failure in VBV If VBV does underflow, ratecontrol could be permanently broken for the rest of the clip. Revert part of the previous VBV changes to fix this. Version r1210 Release Date: Aug 14, 2009 r1210: new API function x264_encoder_delayed_frames. fix x264cli on streams whose total length is less than the encoder latency. r1209: Add no-mbtree to fprofile (and fix pyramid in fprofile) r1208: Don't print a warning about direct=auto in 2pass when B-frames are off r1207: fix lowres padding, which failed to extrapolate the right side for some resolutions. fix a buffer overread in x264_mbtree_propagate_cost_sse2. no effect on actual behavior, only theoretical correctness. fix x264_slicetype_frame_cost_recalculate on I-frames, which previously used all 0 mb costs. shut up a valgrind warning in predict_8x8_filter_mmx. Version r1206 Release Date: Aug 10, 2009 r1206: simd part of x264_macroblock_tree_propagate. 1.6x faster on conroe. r1205: MB-tree fixes: AQ was applied inconsistently, with some AQed costs compared to other non-AQed costs. Strangely enough, fixing this increases SSIM on some sources but decreases it on others. More investigation needed. Account for weighted bipred. Reduce memory, increase precision, simplify, and early terminate. Version r1204 Release Date: Aug 9, 2009 r1204: Add missing free()s for new data allocated for MB-tree Eliminates a memory leak. r1203: Fix keyframe insertion with MB-tree and no B-frames r1202: Fix MP4 output (bug in malloc checking patch) Version r1201 Release Date: Aug 8, 2009 r1201: Gracefully terminate in the case of a malloc failure Fuzz tests show that all mallocs appear to be checked correctly now. r1200: Fix a potential infinite loop in QPfile parsing on Windows ftell doesn't seem to work properly on Windows in text mode. r1199: Fix delay calculation with multiple threads Delay frames for threading don't actually count as part of lookahead. Version r1198 Release Date: Aug 7, 2009 r1198: Add "veryslow" preset Apparently some people are actually using placebo, so I've added this preset to bridge the gap. r1197: Macroblock-tree ratecontrol On by default; can be turned off with --no-mbtree. Uses a large lookahead to track temporal propagation of data and weight quality accordingly. Requires a very large separate statsfile (2 bytes per macroblock) in multi-pass mode. Doesn't work with b-pyramid yet. Note that MB-tree inherently measures quality different from the standard qcomp method, so bitrates produced by CRF may change somewhat. This makes the "medium" preset a bit slower. Accordingly, make "fast" slower as well, and introduce a new preset "faster" between "fast" and "veryfast". All presets "fast" and above will have MB-tree on. Add a new option, --rc-lookahead, to control the distance MB tree looks ahead to perform propagation analysis. Default is 40; larger values will be slower and require more memory but give more accurate results. This value will be used in the future to control ratecontrol lookahead (VBV). Add a new option, --no-psy, to disable all psy optimizations that don't improve PSNR or SSIM. This disables psy-RD/trellis, but also other more subtle internal psy optimizations that can't be controlled directly via external parameters. Quality improvement from MB-tree is about 2-70% depending on content. Strength of MB-tree adjustments can be tweaked using qcompress; higher values mean lower MB-tree strength. Note that MB-tree may perform slightly suboptimally on fades; this will be fixed by weighted prediction, which is coming soon. r1196: Various 1-pass VBV tweaks Make predictors have an offset in addition to a multiplier. This primarily fixes issues in sources with lots of extremely static scenes, such as anime and CGI. We tried linear regressions, but they were very unreliable as predictors. Also allow VBV to be slightly more aggressive in raising QPs to avoid not having enough bits left in some situations. Up to 1db improvement on some clips. Version r1195 Release Date: Jul 29, 2009 r1195: Fix another 10L in QPRD An entry in subpel_iterations was missing. I have no idea how QPRD was working at all without this change. r1194: Update help and cleanup in ratecontrol.c Deal with some out-of-date information. r1193: 15% faster refine_bidir_satd, 10% faster refine_bidir_rd (or less with trellis=2) re-roll a loop (saves 44KB code size, which is the cause of most of this speed gain) don't re-mc mvs that haven't changed Version r1192 Release Date: Jul 28, 2009 r1192: Faster bidir_rd plus some bugfixes Cache chroma MC during refine_bidir_rd and use both the luma and chroma caches to skip MC in macroblock_encode. Fix incorrect call to rd_cost_part; refine_bidir_rd output was incorrect for i8>0. Remove some redundant clips. ~12% faster refine_bidir_rd. r1191: Add "fastdecode" tune option It does what it says it does. Version r1190 Release Date: Jul 28, 2009 Fix two bugs in QPRD fprofile settings now actually fprofile QPRD. Don't use i_mbrd before initializing it. Version r1189 Release Date: Jul 27, 2009 r1189: Fix 10l in QPRD Trellis used wrong lambda with trellis=1 r1188: Fix a nondeterminism with threads and subme>7 Also add a few more checks to eliminate the need for spel_border. r1187: Add QPRD support as subme=10 Refactor trellis lambda selection to be done in analyse_init instead of in trellis. This will allow for more easy adaption of lambda later on; for now it allows constant lambda across variable QPs. QPRD is only available with adaptive quantization enabled and generally improves SSIM and visual quality. Additionally, weight the SSD values from RD based on the relative QP offset for chroma; helps visually at high QPs where chroma has a lower QP than luma. This fixes some visual artifacts created by QPRD at high QPs. Note that this generally hurts PSNR and SSIM, and so is only on when psy-RD is on. r1186: SSSE3 cachesplit workaround for avg2_w16 Palignr-based solution for the most commonly used qpel function. 1-1.5% faster overall on Core 2 chips. Version r1185 Release Date: Jul 23, 2009 shut up valgrind warnings in trellis Version r1184 Release Date: Jul 20, 2009 New AQ algorithm option "Auto-variance" uses log(var)^2 instead of log(var) and attempts to adapt strength per-frame. Generates significantly better SSIM; on by default with --tune ssim. Whether it generates visually better quality is still up for debate. Available as --aq-mode 2. Version r1183 Release Date: Jul 17, 2009 r1183: Cacheline-split SSSE3 chroma MC ~70% faster chroma MC on 32-bit Conroe Also slightly faster SSSE3 intra_sad_8x8c r1182: Improve documentation of qp/crf options Version r1181 Release Date: Jul 11, 2009 r1181: Merge array_non_zero into zigzag_sub Faster lossless, cleaner code. SSSE3 version of zigzag_sub_4x4_field, faster lossless interlaced coding. r1180: Fix bug in reference frame autoadjustment For some types of input file, x264 did the adjustment before width/height were known. Version r1179 Release Date: Jul 9, 2009 r1179: Fix fprofile settings to match changes in defaults Also add b-adapt 2 to fprofile. r1178: Slightly faster dequant_flat assembly Eliminate some redundant shifts. r1177: Totally new preset system for x264.c (not libx264), new defaults Other new features include "tune" and "profile" settings; see --help for more details. Unlike most other settings, "preset" and "tune" act before all other options. However, "profile" acts afterwards, overriding all other options. Our defaults have also changed: new defaults are --subme 7 --bframes 3 --8x8dct --no-psnr --no-ssim --threads auto --ref 3 --mixed-refs --trellis 1 --weightb --crf 23 --progress. Users will hopefully find these changes to greatly improve usability. r1176: Update Gabriel's email address in AUTHORS r1175: Early termination for chroma encoding Faster chroma encoding by terminating early if heuristics indicate that the block will be DC-only. This works because the vast majority of inter chroma blocks have no coefficients at all, and those that do are almost always DC-only. Add two new helper DSP functions for this: dct_dc_8x8 and var2_8x8. mmx/sse2/ssse3 versions of each. Early termination is disabled at very low QPs due to it not being useful there. Performance increase is ~1-2% without trellis, up to 5-6% with trellis=2. Increase is greater with lower bitrates. r1174: Fix bug in checkasm frame_init_lowres_core check didn't check the C plane. However, all x86 and PPC assembly was correct regardless of the unit test being incorrect. Version r1173 Release Date: Jun 26, 2009 r1173: Add subpartition cost for sub-8x8 blocks Improves sub-p8x8 mode decision. r1172: Yet more CABAC and CAVLC optimizations Also clean up a lot of pointless code duplication in CAVLC MV coding. Version r1171 Release Date: Jun 23, 2009 Various CABAC optimizations and cleanups Faster CABAC CBF context calculation for inter blocks. Add x264_constant_p(), will probably be useful in the future as well. Simpler subpartition functions. Clean up and optimize mvd_cpn a bit more. Various other minor optimizations. Version r1170 Release Date: Jun 21, 2009 AltiVec version of frame_init_lowres_core. 22.4x faster than C on PPC7450 and 25x on PPC970MP. Version r1169 Release Date: Jun 20, 2009 r1169: MMX CABAC mvd sum calculation Faster CABAC mvd coding. r1168: Faster MV prediction Smaller code size, plus I get to use goto. r1167: Fix potential crash in checkasm ssim_end4_sse2 requires aligned sums r1166: SSSE3, faster SSE2/MMX integral_init4v The real reason I wrote this was an excuse to use shufpd. Version r1165 Release Date: Jun 11, 2009 r1165: configure check for uclinux r1164: fix a crash on frame width <= 48 pixels Version r1163 Release Date: May 29, 2009 r1163: configure check for cc, rather than reporting lack of compiler as an asm error. configure check for -mno-cygwin, since it's removed from gcc4. r1162: a better way to keep track of mv candidates. 2-4% faster dia, hex, and umh. r1161: reorder some motion estimation patterns. this change is useless on its own, but segregates the bitstream-changing part out of my next optimization. Version r1160 Release Date: May 27, 2009 Fix VBV warning broken in r915 x264 will now correctly warn about maxrate specified without bufsize even when a level is not set. Version r1159 Release Date: May 25, 2009 r1159: configure check for ssse3-capable binutils r1158: Fix 10L in r1155 Broke --me esa/tesa due to forgetting to add handling for x264_cost_mv_fpel. r1157: Fix bug where satd was incorrectly used with subme<=1 Faster subme<=1 with i4x4 enabled. r1156: Remove some pointless error handling code in cabac/cavlc r1155: Save some memory on mv cost arrays Have quantizers that use the same lambda share the same cost array. r1154: Various CABAC and CAVLC optimizations Backport CAVLC partial-inlining early termination to CABAC (~2-4% faster CABAC residual coding) Version r1153 Release Date: May 19, 2009 r1153: fix a race condition at the end of thread_input r1152: Various trellis speed optimizations r1151: Make i686 the default arch on x86_32 Disabling asm will default to a generic arch. Also fix configure for gcc 4.4. r1150: Faster signed golomb coding 3% faster CAVLC RDO and bitstream writing. r1149: Faster spatial direct MV prediction unroll/tweak col_zero_flag Version r1148 Release Date: May 10, 2009 r1148: More CABAC and CAVLC optimizations Simplified function calling for block_residual_write_(cabac\|cavlc) and improved sigmap coding. Tried making 0/1-bit specific versions of CABAC asm, but benefit was minimal under GCC 4.3. Helped a decent bit under 3.4, but you shouldn't be using such old versions anyways. r1147: Various optimizations in frametype lookahead r1146: Some cosmetics/cleanup Move some macros to x86util.asm that should have been there to begin with. Fix a typo that didn't cause any issues. Version r1145 Release Date: Apr 22, 2009 r1145: fix "incompatible types in initialization" compilation issues with GCC 4.3 (which is stricter than previous compiler version) r1144: fix conversions between vectors with differing element types or numbers of subparts errors Version r1143 Release Date: Apr 20, 2009 r1143: Add "coded blocks" stat to output information. This measures the total percentage of blocks, intra and inter, which have nonzero coefficients. "y,uvAC,uvDC" refers to luma, chroma DC, and chroma AC blocks. Note that skip blocks are included in this stat. r1142: Enable asm predict_8x8_filter I'm not entirely sure how this snuck its way out of holger's intra pred patch. r1141: Remove various bits of dead code found by CLANG. Version r1140 Release Date: Apr 15, 2009 Slightly faster SSE4 SA8D, SSE4 Hadamard_AC, SSE2 SSIM shufps is the most underrated SSE instruction on x86. Version r1139 Release Date: Apr 10, 2009 r1139: Various CABAC optimizations Move calculation of b_intra out of the core residual loop and hardcode it where applicable. Inlining cabac_mb_mvd was unnecessary and wasted tremendous amounts of code size. Inlining only cache_mvd is faster and significantly smaller. r1138: CAVLC optimizations faster bs_write_te, port CABAC context selection optimization to CAVLC. Version r1137 Release Date: Apr 7, 2009 Faster CABAC RDO Since the bypass case is quite unlikely, especially when doing merged sigmap/level coding, it's faster to use a branch than a cmov. Version r1136 Release Date: Apr 5, 2009 Activate intra_sad_x3_8x8c in lookahead Version r1134 Release Date: Apr 1, 2009 r1134: intra_sad_x3_8x8 assembly r1133: intra_sad_x3_4x4 assembly r1132: intra_sad_x3_8x8c assembly Also fix intra_sad_x3_16x16's use of "n" as a loop variable (broke SWAP) r1131: Shave one instruction off CABAC encode_decision range_lps>>6 ranges from 4-7, so (range_lps>>6)-4 == (range_lps>>6) & 3 Version r1130 Release Date: Mar 27, 2009 Faster probe_skip Add a second chroma threshold after the DC transform. Version r1129 Release Date: Mar 21, 2009 Add missing "static" qualifier to two arrays Should slightly improve performance. Version r1128 Release Date: Mar 19, 2009 SSE2 zigzag_interleave Replace PHADD with FastShuffle (more accurate naming). This flag represents asm functions that rely on fast SSE2 shuffle units, and thus are only faster on Phenom, Nehalem, and Penryn CPUs. Version r1127 Release Date: Mar 11, 2009 r1127: Faster integral_init palignr to avoid unaligned loads is worth it in inith, but not initv. r1126: Faster SSSE3 hpel_filter_v ~10% faster hpel_filter on 64-bit Penryn. 32-bit version by Jason Garrett-Glaser. Version r1125 Release Date: Mar 9, 2009 r1125: Faster SSE2 pixel_var Optimized using the DEINTB method from r1122. ~32% faster var_16x16 on Conroe. r1124: SSSE3 hpel_filter_v Optimized using the same method as in r1122. Patch partially by Holger. ~8% faster hpel filter on 64-bit Nehalem Version r1123 Release Date: Mar 7, 2009 r1123: Update some asm copyright headers r1122: Vastly faster SATD/SA8D/Hadamard_AC/SSD/DCT/IDCT Heavily optimized for Core 2 and Nehalem, but performance should improve on all modern x86 CPUs. 16x16 SATD: +18% speed on K8(64bit), +22% on K10(32bit), +42% on Penryn(64bit), +44% on Nehalem(64bit), +50% on P4(32bit), +98% on Conroe(64bit) Similar performance boosts in SATD-like functions (SA8D, hadamard_ac) and somewhat less in DCT/IDCT/SSD. Overall performance boost is up to ~15% on 64-bit Conroe. r1121: Update x264 copyright date Version r1120 Release Date: Mar 6, 2009 Remove pre-scenecut from fprofile commands as well Also add psy-trellis to fprofile Version r1119 Release Date: Mar 4, 2009 r1119: Slightly faster 8x16 SAD on Penryn Core 2 Same as MMX 8x16 cacheline SAD, but calls SSE2 8x16 SAD in non-cacheline case. Only Nehalem benefits from sizes smaller than 8x16, and Nehalem doesn't use cacheline functions, so no smaller versions are included. r1118: Fix scenecut and VBV with videos of width/height <= 32 Also remove an unused variable r1117: Remove non-pre scenecut Add support for no-b-adapt + pre-scenecut (patch by BugMaster) Pre-scenecut was generally better than regular scenecut in terms of accuracy and regular scenecut didn't work in threaded mode anyways. Add no-scenecut option (scenecut=0 is now no scenecut; previously it was -1) Fix an incorrect bias towards P-frames near scenecuts with B-adapt 2. Simplify pre-scenecut code. r1116: Add AltiVec version of hadamard_ac. 2.4x faster than the C version. Note this this implementation is pretty naive and should be improved by implementing what's discussed in this ML thread: date: Mon, Feb 2, 2009 at 6:58 PM subject: Re: [x264-devel] [PATCH] AltiVec implementation of hadamard_ac routines Version r1115 Release Date: Feb 27, 2009 Fix regression in r1085 Deblocking was very slightly incorrect with partitions=all. Bug found by BugMaster. Version r1114 Release Date: Feb 17, 2009 Optimize neighbor CBP calculation and fix related regression r1105 introduced array overflow in cbp handling Version r1113 Release Date: Feb 14, 2009 Show FPS when importing a raw YUV file Version r1112 Release Date: Feb 13, 2009 r1112: Windows 64-bit support A "make distclean" is probably required after updating to this revision. r1111: Minor fixes and cosmetics Suppress a GCC warning, fix a non-problematic array overflow, one REP->REP_RET. Version r1110 Release Date: Feb 12, 2009 fix 10l in 75b495f2723fcb77f Spare a vec_perm and a vec_mergeh though using a LUT of permutation vectors . (Guillaume Poirier ) Version r1109 Release Date: Feb 10, 2009 r1109: Spare a vec_perm and a vec_mergeh though using a LUT of permutation vectors. r1108: Promote chroma planes to 16 byte alignment. This will allow simplifying vectors loads that can only load 16-bytes aligned data (such as AltiVec). r1107: Fix 10L in intra pred Forgetting a %define resulted in SIGILL on 32-bit systems without SSE (e.g. Athlon XP). Version r1106 Release Date: Feb 9, 2009 r1106: Add decimation in i16x16 blocks Up to +0.04db with CAVLC, generally a lot less with CABAC. r1105: Much faster CABAC residual context selection Up to ~17% faster CABAC RDO, ~36% faster intra-only CABAC RDO.M Up to 7% faster overall in extreme cases. r1104: Faster coeff_last64 on 32-bit r1103: More intra pred asm optimizations SSSE3 version of predict_8x8_hu SSE2 version of predict_8x8c_p SSSE3 versions of both planar prediction functions Optimizations to predict_16x16_p_sse2 Some unnecessary REP_RETs -> RETs. SSE2 version of predict_8x8_vr by Holger. SSE2 version of predict_8x8_hd. Don't compile MMX versions of some of the pred functions on x86_64. Remove now-useless x86_64 C versions of 4x4 pred functions. Rewrite some of the x86_64-only C functions in asm. Version r1102 Release Date: Feb 9, 2009 Speed-up mc_chroma_altivec by using vec_mladd cleverly, and unrolling. Also put width == 2 variant in its own scalar function because it's faster than a vectorized one. Version r1101 Release Date: Feb 5, 2009 r1101: Merging Holger's GSOC branch part 2: intra prediction Assembly versions of most remaining 4x4 and 8x8 intra pred functions. Assembly version of predict_8x8_filter. A few other optimizations. Primarily Core 2-optimized. r1100: 10l: fix compilation with GCC 4.3+ Version r1099 Release Date: Feb 4, 2009 r1099: Faster 8x8dct+CAVLC interleave Integrate array_non_zero with the CAVLC 8x8dct interleave function. Roughly 1.5-2x faster than the original separate array_non_zero method. r1098: Measure CBP cost in i8x8 RD refinement ~0.02-0.05db PSNR gain at high quants in intra-only encoding, pretty small otherwise. Allows a small optimization in i8x8 encoding. Version r1097 Release Date: Feb 2, 2009 Take advantage of saturated signed horizontal sum instructions in the variance computation epilogue since there won't be any overflow triggering an overflow. Suggested by Loren Merritt Version r1096 Release Date: Jan 31, 2009 Massive overhaul of nnz/cbp calculation Modify quantization to also calculate array_non_zero. PPC assembly changes by gpoirior. New quant asm includes some small tweaks to quant and SSE4 versions using ptest for the array_non_zero. Use this new feature of quant to merge nnz/cbp calculation directly with encoding and avoid many unnecessary calls to dequant/zigzag/decimate/etc. Also add new i16x16 DC-only iDCT with asm. Since intra encoding now directly calculates nnz, skip_intra now backs up nnz/cbp as well. Output should be equivalent except when using p4x4+RDO because of a subtlety involving old nnz values lying around. Performance increase in macroblock_encode: ~18% with dct-decimate, 30% without at CRF 25. Overall performance increase 0-6% depending on encoding settings. Version r1095 Release Date: Jan 30, 2009 r1095: Add PowerPC support for "checkasm --bench", reading the time base register. This isn't ideal since the `time base' register is running at a fraction of the processor cycle speed, so the measurement isn't as precise as x86' rdtsc. It's better than nothing though... r1094: fix detection of pthread and isfinite on OpenBSD Version r1093 Release Date: Jan 29, 2009 r1093: remove $ECHON kludge, which broke on SunOS. bring back `gcc -MT`. remove auto-reconfigure on svn update, which has done nothing since we stopped using svn. fix $AS on sparc (was disabled by mmx check). fix --extra-asflags (was ignored). mark bash scripts as bash, not sh patch partly by Greg Robinson and Jugdish. r1092: 1.6x faster satd_c (and sa8d and hadamard_ac) with pseudo-simd. 60KB smaller binary. r1091: Hack around a potential failure point in VBV pred_b_from_p can become absurdly large in static scenes, leading to rare collapses of quality with VBV+B-frames+threads. This isn't a final fix, but should resolve the problem in most cases in the meantime. Version r1090 Release Date: Jan 28, 2009 Much faster chroma encoding and other opts ~15% faster chroma encode by reorganizing CBP calculation and adding special-case idct_dc function, since most coded chroma blocks are DC-only.br> Small optimization in cache_save (skip_bp)br> Fix array_non_zero to not violate strict aliasing (should eliminate miscompilation issues in the future)br> Add in automatic substitutions for some asm instructions that have an equivalent smaller representation. Version r1089 Release Date: Jan 27, 2009 add AltiVec implementation of x264_mc_copy_w16_aligned Version r1088 Release Date: Jan 24, 2009 r1088: add AltiVec implementation of x264_pixel_var_16x16 and x264_pixel_var_8x8 r1087: add AltiVec 16 <-> 32 bits conversions macros Version r1086 Release Date: Jan 20, 2009 Replace 16x16=>32 mul + pack + add by a simple 16x16=>16 multiply-add. Suggested by Loren. Version r1085 Release Date: Jan 20, 2009 r1085: Eliminate support for direct_8x8_inference=0 The benefit in the most extreme contrived situation was at most 0.001db PSNR, at the cost of slower decoding. As this option was basically useless, it was a waste of code and prevented some other useful optimizations. Remove some unused mc code related to sub-8x8 partitions. Small deblocking speedup when p4x4 is used. Also remove unused x264_nal_decode prototype from x264.h. r1084: Add AltiVec and CPU numbers detection on OpenBSD. Version r1083 Release Date: Jan 19, 2009 r1083: Add AltiVec implementation of predict_8x8c_p. 2.6x faster than scalar C. r1082: Warn if direct auto wasn't set on the first pass And, if it wasn't, run direct auto as if it was the first pass, rather than simply forcing temporal direct mode on all frames. Also a small tweak to coeff_level_run asm. Version r1081 Release Date: Jan 18, 2009 Changes the PowerPC ppccommon.h header so it no longer checks for a particular OS such as Linux but instead looks for HAVE_ALTIVEC_H being set. Fixes all BSD/PowerPC builds. Version r1080* Release Date: Jan 15, 2009 r1080: update x264_hpel_filter_altivec's prototype to match the one of the C version. It changed in commit 045ae4045a1827555b3eaab4fbf3c9809e98c58f (factorization of mallocs) (NB: Altivec implementation wasn't allocating and writing to any scratch memory.) r1079: rename vector+array unions to closer match the vector typedefs names. r1078: Add Altivec implementation of all the remaining 16x16 predict routines. Version r1077 Release Date: Jan 14, 2009 r1077: Cache ref costs and use more accurate MV costs New MV costs should improve quality slightly by improving the smoothness of the field of MV costs (and they're closer to CABAC's actual costs). Despite being optimized for CABAC, they still help under CAVLC, albeit less. MV cost change by Loren Merritt r1076: Support forced frametypes with scenecut/b-adapt This allows an input qpfile to be used to force I-frames, for example. The same can be done through the library interface. Document the format of the qpfile in --longhelp and the forcing of frametypes in x264.h Note that forcing B-frames and B-refs may not always have the intended result. Patch partially by Steven Walters r1075: Remove an IDIV from i8x8 analysis Only one IDIV is left in macroblock level code (transform_rd) Version r1074 Release Date: Jan 9, 2009 Fix regression in r1066 With some combinations of video width and other settings, the scratch buffer was slightly too small. This caused heap corruption on some systems. Version r1073 Release Date: Jan 7, 2009 r1073: Disable B-frames in lossless mode They hurt compression anyways, and direct auto was bugged with lossless. r1072: Factorize in ppccommon.h the conditional inclusion of altivec.h on Linux systems. Version r1071 Release Date: Jan 2, 2009 r1071: Small tweaks to coeff asm Factor out a few redundant pxors Related cosmetics r1070: Fix C99ism in r1066 Version r1069 Release Date: Jan 1, 2009 r1069: Use the correct strtok under MSVC Also change one malloc -> x264_malloc r1068: Add stack alignment for lookahead functions Should allow libx264 to be called from non-gcc-compiled applications without adding force_align_arg_pointer. r1067: Add support for SSE4a (Phenom) LZCNT instruction Significantly speeds up coeff_last and coeff_level_run on Phenom CPUs for faster CAVLC and CABAC. Also a small tweak to coeff_level_run asm. r1066: factor mallocs out of hpel, ssim, and esa. there should now be no memory allocation outside of init-time. Version r1065 Release Date: Dec 30, 2008 r1065: Much faster CAVLC RDO and bitstream writing r1065: Pure asm version of level/run coding. Over 2x faster than C. r1065: Up to 40% faster CAVLC RDO. Overall benefit up to ~7.5% with RDO or ~5% with fast encoding settings. r1064: Cosmetics: cleaner syntax for defining temporary registers in asm r1064: Globally define t#[qdwb], so that only t# needs to be locally defined when reorganizing registers Version r1063 Release Date: Dec 29, 2008 Much faster CABAC RDO Since RDO doesn't care about what order bit costs are calculated, merge sigmap and level coding into the same loop in RDO. This is bit-exact for 4x4dct but slightly incorrect for 8x8dct due to the sigmap containing duplicated contexts. However, the PSNR penalty of this is extremely small (~0.001db). Speed benefit is about 15% in 4x4dct and 30% in 8x8dct residual bit cost calculation at QP20. Overall encoding speed benefit is up to 5%, depending on encoding settings. Also remove an old unnecessary CABAC table that hasn't been used for years. Version r1062 Release Date: Dec 27, 2008 VLC table optimizations Slightly reorganize VLC tables for ~2% faster block_residual_write_cavlc. Also a small optimization in p8x8 CAVLC. Version r1061 Release Date: Dec 25, 2008 r1061: Fix crash in --me esa/tesa introduced in r1058 Also suppress the last mingw warning message r1060: Optimize variance asm + minor changes Remove SAD argument from var, not needed anymore. Speed up var asm a bit by eliminating psadbw and instead HADDWing at end. Eliminate all remaining warnings on gcc 3.4 on cygwin Port another minor optimization from lavc (pskip) r1059: Minor CABAC cleanups and related optimizations Merge the two list tables to allow cleaner MC/CABAC/CAVLC code Remove lots of unnecessary {s Port some very minor opts from lavc r1058: faster ESA init reduce memory if using ESA and not p4x4 Version r1057 Release Date: Dec 16, 2008 r1057: More macroblock_cache optimizations Patch partially by Loren Merritt r1056: Faster macroblock_cache_rect Explicit loop unrolling Version r1055 Release Date: Dec 15, 2008 Optimizations in predict_mv_direct Add some early terminations and minor optimizations This change may also fix the extremely rare direct+threading MV bug. Version r1054 Release Date: Dec 15, 2008 Fix visual corruption when picture width was not mod 32. The previous Altivec implemention of mc_chroma assumed that i_src_stride was always mod 16. Version r1053 Release Date: Dec 14, 2008 r1053: Add support for FSF GCC version >= 4.3 on OSX. So far, only Apple GCC version was supported. r1052: More accurate refcost for p8x8 CAVLC Slightly better quality, especially in non-RD mode, with CAVLC. Version r1051 Release Date: Dec 12, 2008 r1051: use lookup tables instead of actual exp/pow for AQ Significant speed boost, especially on CPUs with atrociously slow floating point units (e.g. Pentium 4 saves 800 clocks per MB with this change). Add x264_clz function as part of the LUT system: this may be useful later. Note this changes output somewhat as the numbers from the lookup table are not exact. r1050: Suppress saveptr warnings on Windows GCC r1049: More small speed tweaks to macroblock.c r1048: Much faster CAVLC residual coding 7 due to different nonzero counts being stored during qpel RD. Version r1047 Release Date: Dec 6, 2008 r1047: fix compilation with GCC-4.3+ r1046: High Profile allows 25% higher maxbitrate/cpb Correct level detection to take this into account. Version r1046 Release Date: Dec 1, 2008 High Profile allows 25% higher maxbitrate/cpb Correct level detection to take this into account. Version r1045 Release Date: Nov 30, 2008 r1045: s/nasm/yasm in VS project file r1044: Cosmetic: update various file headers. r1043: add date and compiler to `x264 --version` Version r1042 Release Date: Nov 29, 2008 r1042: 10L in r1041 r1041: Significantly faster CABAC and CAVLC residual coding and bit cost calculation Early-terminate in residual writing using stored nnz counts To allow the above, store nnz counts for luma and chroma DC Add assembly functions to find the last nonzero coefficient in a block Overall ~1.9% faster at subme9+8x8dct+qp25 with CAVLC, ~0.7% faster with CABAC Note this changes output slightly with CABAC RDO because it requires always storing correct nnz values during RDO, which wasn't done before in cases it wasn't useful. CAVLC output should be equivalent. Version r1040 Release Date: Nov 27, 2008 r1040: dequant_4x4_dc assembly About 3.5x faster DC dequant on Conroe r1039: fix an overflow in dct4x4dc_mmx (unlikely to have occurred in any real video) Version r1038 Release Date: Nov 26, 2008 Remove nasm support Nasm won't correctly parse the SSE4 code introduced a few revisions ago, so we're removing support. Users should upgrade to yasm 0.6.1 or later. Version r1037 Release Date: Nov 26, 2008 r1037: Fix rare warning messages in ratecontrol due to r1020 r1036: Fix MSVC compilation and clean up MSVC build file Remove Release64 which never worked anyways. r1035: Faster width4 SSD+SATD, SSE4 optimizations Do satd 4x8 by transposing the two blocks' positions and running satd 8x4. Use pinsrd (SSE4) for faster width4 SSDv Globally replace movlhps with punpcklqdq (it seems to be faster on Conroe) Move mask_misalign declaration to cpu.h to avoid warning in encoder.c. These optimizations help on Nehalem, Phenom, and Penryn CPUs. r1034: fix indentation, whitespace cleanup, more consistent indentation of macro backslashes r1033: Change some macros to be more sensitive to memory alignment, thus avoiding useless loads/stores and calculations of permutation vectors. Affected functions are all of mc_luma, mc_chroma, 'get_ref', SATD, SA8D and deblock. Gains globally vary from ~5% - 15% on a depending on settings running on a 1.42 ghz G4. Version r1032 Release Date: Nov 25, 2008 r1032: refactor satd. 20KB smaller binary. refactor sa8d. slightly faster. more checkasm for hadamard. r1031: Fix crash with threads and SSEMisalign on Phenom Misalign mask needed to be set separately for each encoding thread. Version r1030 Release Date: Nov 25, 2008 Phenom CPU optimizations Faster hpel_filter by using unaligned loads instead of emulated PALIGNR Faster hpel_filter on 64-bit by using the 32-bit version (the cost of emulated PALIGNR is high enough that the savings from caching intermediate values is not worth it). Add support for misaligned_mask on Phenom: ~2% faster hpel_filter, ~4% faster width16 multisad, 7% faster width20 get_ref. Replace width12 mmx with width16 sse on Phenom and Nehalem: 32% faster width12 get_ref on Phenom. Merge cpu-32.asm and cpu-64.asm Thanks to Easy123 for contributing a Phenom box for a weekend so I could write these optimizations. Version r1029 Release Date: Nov 21, 2008 A few tweaks to decimate asm A little bit faster on both 32-bit and 64-bit Version r1028 Release Date: Nov 14, 2008 r1028: Nehalem optimization part 2: SSE2 width-8 SAD Helps a bit on Phenom as well ~25% faster width8 multiSAD on Nehalem Add subme=0 (fullpel motion estimation only) Only for experimental purposes and ultra-fast encoding. Probably not a good idea for firstpass. Version r1026 Release Date: Nov 11, 2008 r1026: Fix minor memory leak in r1022 r1025: r1024 borked checkasm Remove idct/dct2x2 from checkasm as they are no longer in dctf Version r1024 Release Date: Nov 11, 2008 r1024: Faster chroma encoding 9-12% faster chroma encode. Move all functions for handling chroma DC that don't have assembly versions to macroblock.c and inline them, along with a few other tweaks. r1023: Various cosmetics and minor fixes Disable hadamard_ac sse2/ssse3 under stack_mod4 Fix one MSVC compilation warning Fix compilation in debug mode in certain cases on x64 Remove eval.c from MSVC project Fix crash when VBV is used in CQP mode Patches by MasterNobody r1022: Faster b-adapt + adaptive quantization Factor out pow to be only called once per macroblock. Speeds up b-adapt, especially b-adapt 2, considerably. Speed boost is as high as 24% with b-adapt 2 + b-frames 1 r1021: Faster CABAC residual encoding 6% faster block_residual_write_cabac in RD mode. r1020: Fix potential crash in the case that the input statsfile is too short Also resolve various other potential weirdness (such as multiple copies of the same error message in threaded mode). Version r1019 Release Date: Nov 6, 2008 r1019: Initial Nehalem CPU optimizations movaps/movups are no longer equivalent to their integer equivalents on the Nehalem, so that substitution is removed. Nehalem has a much lower cacheline split penalty than previous Intel CPUs, so cacheline workarounds are no longer necessary. Thanks to Intel for providing Avail Media with the pre-release Nehalem CPU needed to prepare these (and other not-yet-committed) optimizations. Overall speed improvement with Nehalem vs Penryn at the same clock speed is around 40%. r1018: Fix potential infinite loop in VBV under GCC 4. r1017: Encoder_reconfig: esa/tesa can only be enabled if they were on to begin with Bug report by kemuri-_9. Version r1016 Release Date: Nov 1, 2008 Please refer to this page for a full list of changes Version r999 Release Date: Oct 3, 2008 r999: rm gtk, avc2avi. I don't remember why I allowed a gui into the repository in the first place. There's nothing that makes this one special relative to all the other x264 guis. avc2avi doesn't compile since we removed the bitstream reader. And avc doesn't belong in avi. r998: Resolve quality regression in r996 Accidentally removed the wrong line of code. I think this classifies as a "10l". Thanks to techouse for initial bug report and skystrife for helping me find it. r997: Fix minor memory leak accidentally added with the addition of b-adapt 2 Version r996 Release Date: Oct 2, 2008 Rework subme system, add RD refinement in B-frames The new system is as follows: subme6 is RD in I/P frames, subme7 is RD in all frames, subme8 is RD refinement in I/P frames, and subme9 is RD refinement in all frames. subme6 == old subme6, subme7 == old subme6+brdo, subme8 == old subme7+brdo, subme9 == no equivalent --b-rdo has, accordingly, been removed. --bime has also been removed, and instead enabled automatically at subme >= 5. RD refinement in B-frames (subme9) includes both qpel-RD and an RD version of bime. Version r995 Release Date: Sep 29, 2008 Fix potential miscompilation of some inline asm Caused problems under some gcc 4.x versions with predictive lossless Version r994 Release Date: Sep 29, 2008 r994: Replace High 4:4:4 profile lossless with High 4:4:4 Predictive. This improves lossless compression by about 4-25% depending on source. The benefit is generally higher for intra-only compression. Also add support for 8x8dct and i8x8 blocks in lossless mode; this improves compression very slightly. In some rare cases 8x8dct can hurt compression in lossless mode, but its usually helpful, albeit marginally. Note that 8x8dct is only available with CABAC as it is never useful with CAVLC. High 4:4:4 Predictive replaced the previous profile in a 2007 revision to the H.264 standard. The only known compliant decoder for this profile is the latest version of CoreAVC. As I write this, JM does not actually correctly decode this profile. Hopefully this lack of support will soon change with this commit, as x264 will be (to my knowledge) the first compliant encoder. r993: Fix typo in progress indicator when using piped input Version r992 Release Date: Sep 28, 2008 r992: avg_weight_ssse3 r991: fix bitstream writer on bigendian 64bit (regression in r903) r990: remove authors whose code no longer exists r989: more diagnostics when configure finds an unsuitable assembler Version r988 Release Date: Sep 27, 2008 Make x264 progress indicator more concise Now the % indicator should be readable on the header of a minimized window on Windows systems. Version full rev. 987 Release Date: Sep 23, 2008 Fix deblocking + threads + AQ bug At low QPs, with threads and deblocking on, deblocking could be improperly disabled. Revision in which this bug was introduced is unknown; it may be as old as b_variable_qp in x264 itself. Version full rev. 986 Release Date: Sep 22, 2008 Resolve possible crash in bime, improve the fix in r985 Version full rev. 985 Release Date: Sep 21, 2008 r985: Fix rare crash issue in b-adapt Regression probably in r979 r984: Merging Holger's GSOC branch part 1: hpel_filter speedups r983: r980 borked weighted bime r982: Disable I_PCM with psy-RD psy-RD seems to put the PCM threshold a bit lower than it should be, so PCM is now disabled under psy-RD. r981: Merge avg and avg_weight avg_weight no longer has to be special-cased in the code; faster weightb r980: Rewrite avg/avg_weight to take two source pointers This allows the use of get_ref instead of mc_luma almost everywhere for bipred Version full rev. 979 Release Date: Sep 17, 2008 r979: Use low-resolution lookahead motion vectors as an extra predictor Improves quality considerably (0-5%) in 1pass/CRF mode, especially with lower --me values and complex motion. Reverses the order of lowres lookahead search to improve the usefulness of the extra predictors. r978: Add missing free() for f_qp_offset in frame.c Version full rev. 977 Release Date: Sep 17, 2008 r977: Correct misprediction of bitrate in threaded mode Improves bitrate accuracy in cases with large numbers of threads. Loosely based on a patch by BugMaster. r976: Fix a case in which VBV underflows can occur Fix a potential case where a frame might be initially allocated too low a QP, which would then have to be raised a low during row-based ratecontrol. In some cases, this could even produce VBV underflows in 2pass mode. r975: Use correct format specifier for uint64_t Version full rev. 974 Release Date: Sep 16, 2008 Correct misprediction of bitrate in threaded mode Improves bitrate accuracy in cases with large numbers of threads. Loosely based on a patch by BugMaster. Version full rev. 973 Release Date: Sep 16, 2008 r973: Fix regression in b-adapt patch: encoder_open failed for multipass encodes without bframes. r972: Stop SAR in y4m input from overriding --sar on commandline r971: hadamard_ac for psy-rd c version is 1.7x faster than satd+sa8d+sad ssse3 version is 2.3x faster than satd+sa8d+sad r970: Psychovisually optimized rate-distortion optimization and trellis The latter, psy-trellis, is disabled by default and is reserved as experimental; your mileage may vary. Default subme is raised to 6 so that psy RD is on by default. Version full rev. 969 Release Date: Sep 15, 2008 Add optional more optimal B-frame decision method This method (--b-adapt 2) uses a Viterbi algorithm somewhat similar to that used in trellis quantization. Note that it is not fully optimized and is very slow with large --bframes values. It also takes into account weightb, which should improve fade detection. Additionally, changes were made to cache lowres intra results for each frame to avoid recalculating them. This should improve performance in both B-frame decision methods. This can also be done for motion vectors, which will dramatically improve b-adapt 2 performance when it is complete. This patch also reads b_adapt and scenecut settings from the first pass so that the x264 header information in the output file will have correct information (since frametype decision is only done on the first pass). Version full rev. 968 Release Date: Sep 14, 2008 Move adaptive quantization to before ratecontrol, eliminate qcomp bias This change improves VBV accuracy and improves bit distribution in CRF and 2pass. Instead of being applied after ratecontrol, AQ becomes part of the complexity measure that ratecontrol uses. This allows for modularity for changes to AQ; a new AQ algorithm can be introduced simply by introducing a new aq_mode and a corresponding if in adaptive_quant_frame. This also allows quantizer field smoothing, since quantizers are calculated beofrehand rather during encoding. Since there is no more reason for it, aq_mode 1 is removed. The new mode 1 is in a sense a merger of the old modes 1 and 2. WARNING: This change redefines CRF when using AQ, so output bitrate for a given CRF may be significantly different from before this change! Version full rev. 967 Release Date: Sep 10, 2008 r967: Fix crash when using b-adapt at resolutions 32x32 or below. Original patch by BugMaster, but was mostly rewritten in order to make b-adapt actually work at such resolutions, not merely stop crashing. r966: Add title-bar progress indicator under WIN32 Also add bitrate-so-far output when piping data to x264 (total frames not known) Patch mostly by recover from Doom9. Version full rev. 965 Release Date: Sep 7, 2008 Revert part of r963 In some rare (but significant) cases, the optimized nal_encode algorithm gave incorrect results. Version full rev. 964 Release Date: Sep 6, 2008 r964: Predict 4x4_DC asm Also remove 5-year-old unnecessary #define that reduced speed unnecessarily under MSVC-compiled builds r963: Faster NAL unit encoding and remove unused nal_decode Small speedup at very high bitrates r962: CAVLC cleanup and optimizations Also move some small functions in macroblock.c to a .h file so they can be inlined. r961: Faster avg_weight assembly Unrolling the loop a bit improves performance r960: Faster H asm intra prediction functions Take advantage of the H prediction method invented for merged intra SAD and apply it to regular prediction, too. r959: Add merged SAD for i16x16 analysis Roughly 30% faster i16x16 analysis under subme=1 r958: Add sad_aligned for faster subme=1 mbcmp Distinguish between unaligned and aligned uses of mbcmp SAD_aligned, for MMX SADs, uses non-cacheline SADs. Version full rev. 957 Release Date: Sep 3, 2008 Improve progress indicator Show average bitrate so far during encoding Decrease update interval for longer encodes (max of 10 frames encoded between updates) Version full rev. 956 Release Date: Sep 2, 2008 Fix speed regression in r951 Row SATDs are only necessary in VBV mode, so don't need to be checked if VBV is off. Version full rev. 955 Release Date: Sep 1, 2008 r955: zigzag asm r954: fix SOFLAGS used when building gtk frontend patch by Markus Kanet %darkvision A gmx P eu% Version full rev. 953 Release Date: Aug 30, 2008 r953: remove the distinction between itex and ptex (changes 2pass statsfile format) r952: hardcode the ratecontrol equation, and remove the rceq option r951: Fix some uses of uninitialized row_satd values in VBV Resolves some issues with QP51 in I-frames with scenecut Version full rev. 950 Release Date: Aug 27, 2008 r950: Activate trellis in p8x8 qpel RD Also clean up macroblock.c with some refactoring Note that this change significantly reduces subme7+trellis2 performance, but improves quality. Issue originally reported by Alex_W. r949: Improve VBV accuracy Don't use the previous frame's row SATD as a predictor if it is too different from this frame's row SATD. Version full rev. 948 Release Date: Aug 23, 2008 improve generation of Darwin libraries Patch by vmrsss %vmrsss A gmail P com% Version full rev. 947 Release Date: Aug 22, 2008 r947: Fix compilation in gcc 3.4.x (issue in r946) Due to a bug in gcc 3.4.x, in certain cases of inlining, the array_non_zero_int_mmx inline asssembly is miscompiled and causes a crash with --subme 7 --8x8dct. This minor hack fixes this issue. r946: shut up various gcc warnings r945: fix a crash with invalid args and --thread-input (introduced in r921 r944: drop support for x86_32 PIC. r943: use permute macros in satd move some more shared macros to x264util.asm Version full rev. 942 Release Date: Aug 21, 2008 r942: cosmetics r941: r940 broke threads r940: Cleanups in macroblock_cache_save/load A bit more loop unrolling, and moving some constant code to the global init function r939: Deblocking code cleanup and cosmetics Convert the style of the deblocking code to the standard x264 style Eliminate some trailing whitespace Version full rev. 938 Release Date: Aug 19, 2008 4% faster deblock: special-case macroblock edges Along with a bit of related code reorganization and macroification Version full rev. 937 Release Date: Aug 17, 2008 Add dedicated variance function instead of using SAD+SSD Faster variance calculation Version full rev. 936 Release Date: Aug 16, 2008 r936: 6% faster deblock: remove some clips, earlier termiantion on low qps. r935: Faster deblocking Early termination for bS=0, alpha=0, beta=0 Refactoring, various other optimizations About 30% faster deblocking overall. Version full rev. 934 Release Date: Aug 12, 2008 r934: asm cosmetics r933: yet another posix-emulating define on solaris r932: update msvc projectfile r931: drop support for msvc6 Version full rev. 930 Release Date: Aug 10, 2008 r930: Prevent VBV from lowering quantizer too much This code seemed to act up unexpectedly sometimes, creating a situation where in 1-pass VBV mode, a frame's quantizer would drop all the way to qpmin and then shoot back upwards to qpmax, causing serious visual issues. This change may decrease bitrate in VBV mode, but that is preferable to the artifacting produced by this code. r929: Improve subme7 at low QPs and add subme7 support in lossless mode Version full rev. 928 Release Date: Jul 31, 2008 r928: cosmetics: merge x86inc.asm r927: Add missing x264util.asm r926: Basic sanity checking of qpmax/qpmin options r925: Fix regression in r922 set the chroma DC coefficients to zero for residual coding in qpel-rd fix C99ism r924: Refactor asm macros part 2: DCT r923: Refactor asm macros part 1: DCT Version full rev. 922* Release Date: Jul 30, 2008 r922: Improve intra RD refine, speed up residual_write_cabac a do/while loop can be used for residual_write, but i8x8 had to be fixed so that it wouldn't call residual_write with zero coeffs proper nnz handling added to cabac intra rd refine chroma cbp added to 8x8 chroma rd cbp was tested, but wasn't useful r921: Fix a few more minor memleaks Version full rev. 920 Release Date: Jul 26, 2008 r920: stats summary: print distribution of numbers of consecutive B-frames r919: add interlacing to the list of stuff checked by x264_validate_levels Version full rev. 918 Release Date: Jul 25, 2008 r918: Fix C99-ism in r907 r917: Faster temporal predictor calculation Split into a separate commit because this changes rounding, and thus changes output slightly. r916: Align lowres planes for improved cacheline split performance Version full rev. 915 Release Date: Jul 21, 2008 autodetect level based on resolution/bitrate/refs/etc, rather than defaulting to L5.1 if vbv is not enabled (and especially in crf/cqp), we have to guess max bitrate, so we might underestimate the required level. Version full rev. 914 Release Date: Jul 19, 2008 fix bs_write_ue_big for values >= 0x10000. (no immediate effect, since nothing writes such values yet) Version full rev. 913 Release Date: Jul 17, 2008 Fix lossless mode borked in r901 Version full rev. 912 Release Date: Jul 13, 2008 r912: Relax QPfile restrictions Allow a QPfile to contain fewer frames than the total number of frames in the video and have ratecontrol fill in the rest. Patch by kemuri9. r911: Limit MVrange correctly in interlaced mode Bug report by Sigma Designs, Inc. Version full rev. 910 Release Date: Jul 12, 2008 r910: Fix bug with PCM and adaptive quantization In rare cases CABAC desync could occur, causing bitstream corruption r909: Fix memory leak upon x264 closing Doesn't affect the CLI, but potentially important for programs which call x264 as a shared library. r908: Fix compilation on PPC systems (borked in r903) Bigendian systems didn't have endian_fix32 defined r907: Add L1 reflist and B macroblock types to x264 info Also remove display of "PCM" if PCM mode is never used in the encode. L1 reflist information will only show if pyramid coding is used. Version full rev. 906 Release Date: Jul 11, 2008 r906: Fix and enable I_PCM macroblock support In RD mode, always consider PCM as a macroblock mode possibility Fix bitstream writing for PCM blocks in CAVLC and CABAC, and a few other minor changes to make PCM work. PCM macroblocks improve compression at very low QPs (1-5) and in lossless mode. r905: de-duplicate vlc tables r904: faster ue/se/te write r903: faster bs_write r902: cosmetics in ssd asm Version full rev. 901 Release Date: Jul 7, 2008 r901: Various optimizations and cosmetics Update AUTHORS file with Gabriel and me update XCHG macro to work correctly in if statements Add new lookup tables for block_idx and fdec/fenc addresses Slightly faster array_non_zero_count_mmx (patch by holger) Eliminate branch in analyse_intra Unroll loops in and clean up chroma encode Convert some for loops to do/while loops for speed improvement Do explicit write-combining on --me tesa mvsad_t struct Shrink --me esa zero[] array Speed up bime by reducing size of visited[][][] array r900: Resolve floating point exception with frame_init_lowres mmx In some cases, the mmx version of frame_init_lowres could leave the FPU uninitialized for use in ratecontrol, resulting in floating point exceptions. Since frame_init_lowres is such a time-consuming function, an emms was just put at the end, since it costs almost nothing compared to the total time of frame_init_lowres. Version full rev. 899 Release Date: Jul 5, 2008 Update my email address Version full rev. 898 Release Date: Jul 4, 2008 Update file headers throughout x264 Update "Authors" lists based on actual authorship; highest is most important Update copyright notices and remove old CVS tags from file headers Add file headers to GTK and other sections missing them Update FSF address Other header-related cosmetics Version full rev. 897 Release Date: Jul 3, 2008 r897: denoise_dct asm r896: cosmetics in permutation macros SWAP can now take mmregs directly, rather than just their numbers Version full rev. 895 Release Date: Jul 3, 2008 r895: Fix bug in adaptive quantization In some cases adaptive quantization did not correctly calculate the variance. Bug reported by MasterNobody r894: lowres_init asm rounding is changed for asm convenience. this makes the c version slower, but there's no way around that if all the implementations are to have the same results. r893: Optimizations and cosmetics in macroblock.c If an i4x4 dct block has no coefficients, don't bother with dequant/zigzag/idct. Not useful for larger sizes because the odds of an empty block are much lower. Cosmetics in i16x16 to be more consistent with other similar functions. Add an SSD threshold for chroma in probe_skip to improve speed and minimize time spent on chroma skip analysis. Rename lambda arrays to lambda_tab for consistency. Version full rev. 892 Release Date: Jun 30, 2008 some asm functions require aligned stack. disable these when compiling with msvc/icc. Version full rev. 891 Release Date: Jun 25, 2008 r891: Move bitstream end check to macroblock level r891: Additionally, instead of silently truncating the frame upon reaching the end of the buffer, reallocate a larger buffer instead. r890: Convert NNZ to raster order and other optimizations r890: Converting NNZ to raster order simplifies a lot of the load/store code and allows more use of write-combining. r890: More use of write-combining throughout load/save code in common/macroblock.c r890: GCC has aliasing issues in the case of stores to 8-bit heap-allocated arrays; dereferencing the pointer once avoids this problem and significantly increases performance. r890: More manual loop unrolling and such. r890: Move all packXtoY functions to macroblock.h so any function can use them. r890: Add pack8to32. r890: Minor optimizations to encoder/macroblock.c Version full rev. 889 Release Date: Jun 19, 2008 r889: mc_chroma_sse2/ssse3 r888: checkasm --bench=function_name r887: interleave psnr/ssim computation with reference frame filtering, to improve cache coherency Version full rev. 886 Release Date: Jun 16, 2008 r886: Add more inline asm and a runtime check for MMXEXT support x264 will now terminate gracefully rather than SIGILL when run on a machine with no MMXEXT support. A configure option is now available to build x264 without assembly support for support on such old CPUs as the Pentium 2, K6, etc. r885: Use aligned memcpy for x264_me_t struct and cosmetics r884: Cosmetics and loop unrolling GCC is not very good at loop unrolling in cases where it can perform constant propagation, so the unrolling unfortunately has to be done manually. Version full rev. 883 Release Date: Jun 13, 2008 r883: Fix regression in 64-bit in r882 i_mvc needs to be 64-bit when used with a 64-bit memory pointer r882: More tweaks to me.c r882: Added inline MMX version of UMH's predictor difference test r882: Various cosmetics throughout me.c r882: Removed a C99-ism introduced in r878. Version full rev. 881 Release Date: Jun 12, 2008 Fix regression in r736 r736 added intra RD refinement to B-frames; however, it is possible for subme=7 to be used without b-rdo. This means intra RD isn't run, and therefore it is possible for intra chroma analysis to not have been run, since update_cache was never called for an intra block, and chroma ME is not required even at subme=7. r801, which removed a memset, made this worse because previously the chroma prediction mode was at least initialized to zero; now it was not initialized at all. Therefore, --no-chroma-me, --subme 7, and no --b-rdo had the potential to crash. This change restricts intra RD refinement to only be run when --b-rdo is enabled (sensible to begin with), thus preventing a crash in this case. Version full rev. 880 Release Date: Jun 11, 2008 r880: Fix regression in r850 Bug resulted in rare incorrect chroma encoding r879: Cosmetics in VBV handling r878: Tweaks and cosmetics in me.c Use write-combining for predictor checking and other tweaks. Version full rev. 877 Release Date: Jun 8, 2008 r877: Partially inline trellis quantization Inlining trellis into the 4x4/8x8 trellis wrappers increases trellis speed by about 5-10% through constant propagation. r876: Various cosmetic changes. r875: avg_weight_sse2 r874: many changes to which asm functions are enabled on which cpus. with Phenom, 3dnow is no longer equivalent to "sse2 is slow", so make a new flag for that. some sse2 functions are useful only on Core2 and Phenom, so make a "sse2 is fast" flag for that. some ssse3 instructions didn't become useful until Penryn, so yet another flag. disable sse2 completely on Pentium M and Core1, because it's uniformly slower than mmx. enable some sse2 functions on Athlon64 that always were faster and we just didn't notice. remove mc_luma_sse3, because the only cpu that has lddqu (namely Pentium 4D) doesn't have "sse2 is fast". don't print mmx1, sse1, nor 3dnow in the detected cpuflags, since we don't really have any such functions. likewise don't print sse3 unless it's used (Pentium 4D). r873: enable ssse3 phadd satd on Penryn. r872: benchmark most of the asm functions (checkasm --bench). Version full rev. 871 Release Date: Jun 6, 2008 Cosmetic: fix C99-ism Version full rev. 870 Release Date: Jun 6, 2008 Use a gaussian window for cplxblur Cplxblur was originally intended to use a gaussian window, but in its current form did not.This change provides a tiny improvement to 2pass ratecontrol. Version full rev. 869 Release Date: Jun 4, 2008 r869: cosmetics r868: nasm compatible NX stack r867: CQP is incompatible with AQ r866: memzero_aligned_mmx r865: binmode stdin on mingw, not just msvc r864: omit redundant mc after non-rdo dct size decision, and in b-direct rdo r863: allow fractional CRF values with AQ. r862: fix some uninitialized partitions in rdo Version full rev. 861 Release Date: Jun 3, 2008 r861: 2-pass VBV support and improved VBV handling Dramatically improves 1-pass VBV ratecontrol (especially CBR) and provides support for VBV in 2-pass mode. This consists of a series of functions that attempts to find overflows and underflows in the VBV from the first-pass statsfile and fix them before encoding. 1-pass VBV code partially by Dark Shikari. r860: Fix noise reduction in threaded mode. Previously enabling noise reduction with threads had no effect. Note that this is not an optimal solution; each thread still tracks noise reducation separately (unlike in single-threaded mode). Version full rev. 859 Release Date: May 21, 2008 r859: fix a crash on win32 with threads. r852 introduced an assumption in deblock that the stack is aligned. r858: remove nasm version check. a feature check is all that's needed. silence stderr in yasm version check. r857: cosmetics in cabac r856: faster residual_write_cabac r855: change DEBUG_DUMP_FRAME to run-time --dump-yuv r854: x264_median_mv_mmxext this is the first non-runtime-detected use of mmxext, but it has to be inlined r853: factor duplicated code out of deblock chroma mmx r852: deblock_luma_intra_mmx Version full rev. 851 Release Date: May 17, 2008 r851: write aspect ratio in mp4 r850: omit delta_quant in i16x16 blocks with no residual (all other block types were already covered, but i16x16 cbp is special) r849: explicit write combining, because gcc fails at optimizing consecutive memory accesses r848: force unroll macroblock_load_pic_pointers and a few other minor optimizations r847: quant_2x2_dc_ssse3 r846: r836 borked lossless cabac nnz Version full rev. 845 Release Date: May 15, 2008 r845: use elf instead of a.out on netbsd r844: fix x264_realloc when not using libc realloc. r843: don't pretend to support win64. remove all related code. it hasn't worked since probably some time in 2005, and won't ever be fixed unless someone steps up to maintain it. r842: cosmetics: replace last instances of parm# asm macros with r# r841: remove DEBUG_BENCHMARK r840: faster probe_skip Version full rev. 839 Release Date: Apr 28, 2008 r839: drop support for pre-SSE3 assemblers r838: s/x264_cpu_restore/x264_emms/ no point in giving it a generic name when it's not generic r837: faster cabac_mb_cbp_luma ported from ffmpeg r836: remove some redundant nnz counts move some nnz counts from macroblock_encode to cavlc if cabac doesn't need them r835: compute missing nnz count in subme7 cavlc r834: remove a division in macroblock-level bookkeeping r833: omit P/B-skip mc from macroblock_encode if the pixels haven't been overwritten since probe_skip r832: earlier termination in SEA if mvcost exceeds residual r831: remove void* arithmetic from r821 Version full rev. 830 Release Date: Apr 26, 2008 r830: Fix define of illegal function identifiers (as defined in section "7.1.3 Reserved identiers" of C99 spec) r829: Fix define of illegal identifier (as defined in section "7.1.3 Reserved identiers" of C99 spec) "__UNUSED__", and use the one defined in common/osdep.h, i.e. "UNUSED" based on a patch by Diego Biurrun Version full rev. 828 Release Date: Apr 25, 2008 r828: more consistent include name (in line with other PPC includes r827: fix illegal identifiers in multiple inclusion guards patch by Diego Biurrun % diego A biurrun P de % Version full rev. 826 Release Date: Apr 22, 2008 r826: AQ now treats perfectly flat blocks as low energy, rather than retaining previous block's QP. r826: fixes occasional blocking in fades. r825: checkasm cabac r824: s/movdqa/movaps/g r823: --asm to allow testing of different versions of asm without recompile r822: copy left neighbor pixels directly from previous mb instead of main plane Version full rev. 821 Release Date: Apr 17, 2008 r821: cacheline split workaround for mc_luma r820: add "SECTION_RODATA" before "SECTION .text" to setup the fakegot label used in macho binaries. This fixes compilation with --enable-pic Requires Yasm 0.7.0 or newer Patch by Dave Lee % davelee P com A gmail P com % Version full rev. 819 Release Date: Apr 15, 2008 more hpel fixes Version full rev. 818 Release Date: Apr 12, 2008 r818: update msvc projectfile r817: r810 borked hpel_filter_sse2 on unaligned buffers Version full rev. 816 Release Date: Apr 10, 2008 r816: threads=auto on multicore now implies thread input, just like explicit thread numbers already did r815: dct4 sse2 r814: faster x86_32 dct8 r813: macros to deal with macros that permute their arguments r812: mmx cachesplit sad of non-square sizes checked height instead of width r811: sfence after nontemporal stores r810: simplify hpel filter asm (move control flow to C) and add sse2, ssse3 versions r809: more mmx/xmm macros (mova, movu, movh) Version full rev. 808 Release Date: Apr 1, 2008 r808: improve handling of cavlc dct coef overflows support large coefs in high profile, and clip to allowed range in baseline/main r807: fix shared libs on MacOSX based on a patch by Ä°smail DÃ¶nmez r806: typo in r803 Version full rev. 805 Release Date: Mar 31, 2008 r805: fix a crash on mp4 muxing with invalid params r804: variance-based psy adaptive quantization r804: new options: --aq-mode --aq-strength r804: AQ is enabled by default r803: fix naming of .dll on mingw r802: don't distinguish between mingw and cygwin r801: remove a memset r800: typo. don't evaluate rd pskip when p16x16 found ref> r799: 0r784 borked lossless dc zigzag Version full rev. 798 Release Date: Mar 26, 2008 r798: fix an arithmetic overflow that disabled SEA threshold after finding a mv with SAD < mvcost. r797: fix hpel_filter_altivec picked up by checkasm Patch by Manuel %maaanuuu A gmx.net % and Noboru Asai % noboru P asai A gmail P com % Version full rev. 796 Release Date: Mar 25, 2008 r796: faster residual r795: nasm doesn't like align(nop) in structs r794: reduce the size of some cabac arrays r793: use cabac context transition table from trellis in normal residual coding too r792: rearrange cabac struct to reduce code size Version full rev. 791 Release Date: Mar 25, 2008 r791: higher precision RD lambda improves quality at QP<=12. r790: faster cabac_encode_ue_bypass r789: cabac asm. mostly because gcc refuses to use cmov. 28% faster than c on core2, 11% on k8, 6% on p4. r788: cosmetics in cabac r787: inline cabac_size_decision Version full rev. 786 Release Date: Mar 23, 2008 r786: cosmetics in DECLARE_ALIGNED r785: don't distinguish between luma4x4 and luma4x4ac r784: faster lossless zigzag r783: more alignment Version full rev. 782 Release Date: Mar 22, 2008 r782: add tesa and lossless to fprofile r781: cosmetics in residual_write r780: remove unused bitstream reader r779: cosmetics in quant asm r778: special case dequant for flat matrix Version full rev. 777 Release Date: Mar 21, 2008 r777: faster dequant r776: simplify hpel_filter_c r775: use x264_mc_copy_w16_sse2 in mc.copy, it was previously only in mc_luma r774: new ssd_8x_sse2 r774: align ssd_16x_sse2 r774: unroll ssd_4x_mmx r773: update altivec zigzags r772: r768 borked cavlc Version full rev. 771* Release Date: Mar 20, 2008 r771: cosmetics in intra predict r770: faster intra predict 8x8 hu/hd r769: reduce zigzag arrays from int to int16_t r768: reduce the size of some arrays r767: skip intra pred+dct+quant in cases where it's redundant (analyse vs encode) large speedup with trellis=2, small speedup with trellis=0 and/or subme>=6 r766: cosmetics in asm r765: satd_4x4_ssse3 r764: get_ref_sse2 Version full rev. 763 Release Date: Mar 19, 2008 r763: continue instead of crash when the threading mv constraint is violated. doesn't fix the underlying bug, but hopefully less annoying until we find it. r762: remove remaining reference to clip1.h r761: fix name mangling again. apparently it's not just a convention, dll build fails if you try to export a non-prefixed name. r760: update msvc projectfile r759: missing #ifdef HAVE_SSE3 r758: don't define offsetof since it's standard r757: shut up gcc warning in offsetof Version full rev. 756 Release Date: Mar 17, 2008 r756: increase alignment of mv arrays r755: memcpy_aligned_sse2 r754: checkasm check whether callee-saved regs are correctly saved x86_32 only for now since x86_64 varargs are annoying r753: fix x86_32 ads which failed to preserve a register r752: fix some name mangling issues introduced by the merge r751: remove x264_mc_clip1. it's wrong for sufficiently perverse inputs, and clip_uint8 is faster anyway. r750: merge x86_32 and x86_64 asm, with macros to abstract calling convention and register names Version full rev. 749 Release Date: Mar 12, 2008 git compatible version script Version full rev. 748 Release Date: Mar 8, 2008 check for broken versions of yasm Version full rev. 747 Release Date: Mar 7, 2008 Rev. 746: .gitignore Rev. 747: increase the alignment of the i8x8 edge cache, needed for sse2 intra prediction. patch by Alexander Strange. Version full rev. 745 Release Date: Mar 2, 2008 Rev. 745: pic macros now keep track of which register holds the GOT, so variable access doesn't have to care Rev. 744: remove x86_64 predict_8x8_ddl_mmxext because sse2 is faster even on amd Rev. 743: cosmetics in dsp init Rev. 742: sse2 16x16 intra pred. Rev. 742: port the remaining intra pred functions from x86_64 to x86_32. patch by Dark Shikari. Rev. 742: some simplifications to mmx intra pred that should have been done way back when we switched to constant fdec_stride. Rev. 742: and remove pic spills in functions that have a free caller-saved reg. patch partly by Dark Shikari. Rev. 740: faster array_non_zero Rev. 739: x86_32 sse2 idct8 ported from ffmpeg by Dark Shikari Rev. 738: checkasm: relax the threshold for floating-point ssim Rev. 737: checkasm: test idct with the range of coefficients what can really be encountered, as opposed to random numbers which might overflow. Version full rev. 736 Release Date: Jan 29, 2008 intra_rd_refine in B-frames Version full rev. 735 Release Date: Jan 28, 2008 print average of macroblock QPs instead of frame's nominal QP update date remove colorspace conversion support, because it has no business in any codec misc fixes in checkasm remove a useless bit of me=umh (originally copied from JM, where it was used for something) fix a memleak in cqm fix a memleak in mkv muxer patch by saintdev satd exhaustive motion search (--me tesa) fix cabac context for nonzero delta_qp of the 2nd mb of a frame in interlaced mode fix mapping of mvs to partitions in p4x4_chroma patch by Noboru Asai fix mvp for b16x8 and b8x16 L1 search patch by Wei-Yin Chen shave a couple cycles off cabac functions faster and smaller x264_macroblock_cache_mv etc configure test for endianness Version full rev. 721 Release Date: Jan 18, 2008 change the meaning of --ref: it now selects DPB size (including B-frames), rather than L0 size (which B-frames are added to) Version full rev. 720 Release Date: Jan 15, 2008 add / fix support for FreeBSD, based on a patch by Igor Mozolevsky % igor A hybrid-lab P co P uk % Version full rev. 719 Release Date: Jan 10, 2008 shut up some valgrind warnings slightly wrong memory allocation in r717, fixes a potential crash with merange>32 Version full rev. 717 Release Date: Jan 7, 2008 convert absolute difference of sums from mmx to sse2 convert mv bits cost and ads threshold from C to sse2 convert bytemask-to-list from C to scalar asm 1.6x faster me=esa (x86_64) or 1.3x faster (x86_32). (times consider only motion estimation. overall encode speedup may vary.) round esa range to a multiple of 4 Version full rev. 715 Release Date: Jan 4, 2008 use define _WIN32 instead of __WIN32__ or WIN32 defines. NSDN reference: http://msdn2.microsoft.com/en-us/library/b0084kay(VS.80).aspx Patch by BugMaster %BugMaster A narod P ru% Original thread: date: Dec 27, 2007 3:18 AM subject: [x264-devel] VS2008 compilation error (need of replacement __WIN32__ with _WIN32) Version full rev. 714 Release Date: Dec 21, 2007 tweak x264_pixel_sad_x4_16x16_sse2 horizontal sum. 168 -> 166 cycles on core2. Version full rev. 713 Release Date: Dec 21, 2007 fix a nondeterminism involving 8x8dct, rdo, and threads. Version full rev. 712 Release Date: Dec 14, 2007 also test arch-specific x264_zigzag_* implementations in checkasm.c patch by Patch by Noboru Asai % noboru P asai A gmail P com% Version full rev. 711 Release Date: Dec 11, 2007 Add AltiVec implementation of x264_zigzag_scan_4x4_frame_altivec() x264_zigzag_scan_4x4ac_frame_altivec() x264_zigzag_scan_4x4_field_altivec() x264_zigzag_scan_4x4ac_field_altivec() each around 1.3 tp 1.8x faster than C version Patch by Noboru Asai % noboru P asai A gmail P com% Version full rev. 710 Release Date: Dec 10, 2007 adds AliVec implementation of predict_16x16_p() over 4x faster than C version Version full rev. 709 Release Date: Dec 7, 2007 revert the x86_32 part of r708. elf shared libraries aren't important enough to be worth the extra lines of code to check for nasm. Version full rev. 708 Release Date: Dec 4, 2007 Rev. 708: mark asm functions as hidden Rev. 707: check whether ld supports -Bsymbolic before using it Version full rev. 706 Release Date: Dec 3, 2007 reduce the data type used in some tables. 16KB smaller exe. Version full rev. 705 Release Date: Dec 2, 2007 Rev. 705: faster removal of duplicate mv predictors Rev. 704: avoid a division in x264_mb_predict_mv_ref16x16. patch by Dark Shikari. Rev. 703: avoid a division in umh. patch by Dark Shikari. Version full rev. 702 Release Date: Nov 27, 2007 fix a memleak in h->mb.mvr Version full rev. 701 Release Date: Nov 26, 2007 fix compilation as a shared library on x86_64 (regression in r696) Version full rev. 700 Release Date: Nov 22, 2007 Rev. 700: add support for x86_64 on Darwin9.0 (Mac OS X 10.5, aka Leopard) Patch by Antoine Gerschenfeld %gerschen A clipper P ens P fr% Rev. 699: cover some more options in fprofile. (esa, bime, cqm, nr, no-dct-decimate, trellis2) previously, esa was slower with fprofile than without, since gcc thought it wasn't important. now esa benefits like anything else. Version full rev. 698 Release Date: Nov 21, 2007 Rev. 698: Add AltiVec implementation of x264_pixel_ssd_8x8, 3x faster than C version Overall speed-up: 0.7% with --bframes 3 --ref 5 -m 7 --b-rdo Patch by Noboru Asai %noboru P asai A gmail P com% Rev. 697: limit mvs to [-512,511.75] instead of [-512,512] Rev. 696: avoid memory loads that span the border between two cachelines. on core2 this makes x264_pixel_sad an average of 2x faster. other intel cpus gain various amounts. amd are unaffected. overall speedup: 1-10%, depending on how much time is spent in fullpel motion estimation. Rev. 695: add cache info to cpu_detect. also print sse3. Version full rev. 694 Release Date: Nov 20, 2007 Rev. 694: cosmetics: reorder mc_luma/mc_chroma/get_ref arguments for consistency with other functions Rev. 693: separate pixel_avg into cases for mc and for bipred Version full rev. 692 Release Date: Nov 19, 2007 Rev. 692: add AltiVec implementation of ssim_4x4x2_core, about 4x faster than C version. Overall: 0.1-0.2% faster with default encoding settings Patch by Noboru Asai %noboru P asai A gmail P com% Rev. 691: Add AltiVec implementation ofx264_hpel_filter. Provides a 10-11% overall speed-up with default encoding options Patch by Noboru Asai %noboru P asai A gmail P com Version full rev. 690 Release Date: Nov 18, 2007 cosmetics in dsp function selection Version full rev. 689 Release Date: Nov 18, 2007 remove sad_pde. it's been unused ever since successive elimination replaced it. Version full rev. 688 Release Date: Nov 17, 2007 Rev. 688: cosmetics: use symbolic constants for frame padding radius Rev. 687: move hpel_filter cpu detection to a function pointer like everything else Version full rev. 686 Release Date: Nov 16, 2007 cosmetics: use separate variables for frame width and stride Version full rev. 685 Release Date: Nov 14, 2007 rev. 685: Add AltiVec implementation of add4x4_idct, add8x8_idct, add16x16_idct, 3.2x faster on average 1.05x faster overall with default encoding options Patch by Noboru Asai % noboru DD asai AA gmail DD com % rev. 684: add AltiVec implementation of dequant_4x4 and dequant_8x8, 2.8x faster than C, 1.01x faster than previous revision with default encoding options Patch by Noboru Asai % noboru DD asai AA gmail DD com % Version full rev. 683 Release Date: Nov 13, 2007 Add AltiVec implementation of quant_2x2_dc, fix Altivec implementation of quant_(4x4\|8x8)(\|_dc) wrt current C implementation Patch by Noboru Asai % noboru DD asai AA gmail DD com % Version full rev. 682 Release Date: Nov 2, 2007 fix a possible nondeterminism with me=umh + threads. Version full rev. 681 Release Date: Oct 31, 2007 use hex instead of dia for rdo mv refinement. ~0.5% lower bitrate at subme=7. patch by Dark Shikari. Version full rev. 680 Release Date: Sep 25, 2007 port sad__x3_sse2 to x86_64 don't overwrite pthread namespace, because system headers might define those functions even if we don't want them Version full rev. 678 Release Date: Sep 22, 2007 faster 4x4 sad Version full rev. 677 Release Date: Sep 21, 2007 fix an arithmetic overflow in trellis at high qp. Version full rev. 676 Release Date: Sep 16, 2007 implement multithreaded me=esa Version full rev. 675 Release Date: Sep 13, 2007 fix some integer overflows. now vbv size can exceed 2 Gbit. Version full rev. 674 Release Date: Sep 10, 2007 allow --vbv-init to take absolute values (in kbit), in addition to the previous fractions of vbv-bufsize. Version full rev. 673 Release Date: Sep 9, 2007 remove a bashism Version full rev. 672 Release Date: Sep 4, 2007 reorder headers so that largefile support is defined before the first copy of stdio Version full rev. 671 Release Date: Aug 21, 2007 regression in r669: broke saving of configure args if make has to re-run configure Version full rev. 670 Release Date: Aug 18, 2007 regression in r669: --enable-shared should imply --enable-pic on some archs. Version full rev. 669 Release Date: Aug 14, 2007 Add a --host flag to allow overriding config.guess; this is particularly useful with a 64-bits kernel running a 32-bits userland to build 32-bits apps. Normalize any host triplet into a quadruplet via config.sub. Move option parsing before any use of architecture information. Update config.guess. Version full rev. 667 Release Date: Jul 18, 2007 mingw doesn't have strtok_r move os/compiler specific defines to their own header extend zones to support (some) encoding parameters in addition to ratecontrol. Version full rev. 664 Release Date: Jul 7, 2007 cosmetics Version full rev. 663 Release Date: Jun 29, 2007 limit vertical motion vectors to +/-512, since some decoders actually depend on that limit. Version full rev. 662 Release Date: Jun 23, 2007 Add vertical and horizontal luma deblocking accelerated with Altivec, based on Graham Booker's code written for FFmpeg with slight modifications to re-use x264's macros Version full rev. 661 Release Date: Jun 16, 2007 cosmetics in cpu detection fix compilation without asm on x86_32 (r658 worked only on x86_64). Version full rev. 659 Release Date: Jun 11, 2007 exempt 1080p from the non-mod16 warning Version full rev. 658 Release Date: Jun 6, 2007 allow compiling without yasm/nasm on x86 and x86-64 platforms updated MS VC8/VC7 build, patch by Gabriel Bouvigne Version full rev. 656 Release Date: May 26, 2007 replace alloca with malloc everywhere. per manpage, use of alloca is discouraged. this may have a minor effect on the speed of ssim and esa, but that appears too small to measure. Version full rev. 655 Release Date: May 3, 2007 require a ratecontrol method to be specified, it no longer defaults to cqp=26. Version full rev. 654 Release Date: Apr 23, 2007 fix nnz computation in cavlc+8x8dct+deblock. (regression in r607) fix the computation of bits used for vbv. (regression in r651) Version full rev. 652 Release Date: Apr 22, 2007 c89 compile fix Version full rev. 651 Release Date: Apr 22, 2007 cabac: use bytestream instead of bitstream. 35% faster cabac, 20% faster overall lossless, ~1% faster overall at normal bitrates. Version full rev. 650 Release Date: Apr 13, 2007 remove the restriction on number of threads as a function of resolution (it was wrong anyway in the presence of B-frames), and raise the max number of threads in general (though more will have to be done before it can really scale to lots of cores). Version full rev. 649 Release Date: Apr 11, 2007 tweak ssse3 quant Version full rev. 648 Release Date: Apr 8, 2007 change some tables from int to int8_t. 13KB smaller executable. faster cabac rdo. up to 10% faster at q0, but negligible at normal bitrates. workaround gcc's inability to align variables on the stack. this crash was introduced in r642, but only because previous versions didn't use sse2 on the stack. Version full rev. 645 Release Date: Apr 6, 2007 32bit version of ssse3 satd. switch default assembler to yasm. it will still fallback to nasm if you don't have yasm. simplify trellis fix an arithmetic overflow in trellis with QP >= 42 2x faster quant. 2% overall. side effects: not bit-identical to the previous algorithm. while the new algorithm covers a wider range of cqms than the previous one did, I couldn't find a good way to fallback to a general version for the extreme cqms. so now it refuses to encode extreme cqms instead of just being slower. lays a framework for custom deadzone matrices, though I didn't add an api. when encoding with a cqm, probe_skip now also uses the cqm, instead of the flat matrix Version full rev. 640 Release Date: Apr 4, 2007 cosmetics in asm macros use only c-style comments in public header (patch by Vincent Torres Version full rev. 638 Release Date: Apr 3, 2007 in hpel search, merge two 16x16 mc calls into one 16x17. 15% faster hpel, .3% overall. Compile fix Version full rev. 636 Release Date: Apr 1, 2007 remove private stuff from public headers. no more need for -D__X264__ Version full rev. 635 Release Date: Mar 25, 2007 adjust bitstream buffer sizes for very large frames Version full rev. 634 Release Date: Mar 15, 2007 rev. 634: conflate HAVE_MMXEXT with HAVE_SSE2, since they were never used distinctly. rev. 633: Made -DNEED_ALTIVEC unnecessary, thanks to Guillaume Poirier. rev. 632: check x264_cpu_detect() before calling AltiVec functions. rev. 631: ssse3 detection. x86_64 ssse3 satd and quant. rev. 631: requires yasm >= 0.6.0 rev. 630: Use -maltivec when building dependencies, or cannot be used. rev. 630: Do not declare vectors in non-AltiVec files. rev. 629: common/cpu.c: runtime AltiVec autodetection on Linux. rev. 629: configure, Makefile: do not build the whole project with -maltivec because it generates AltiVec code in weird places. Version full rev. 628 Release Date: Mar 6, 2007 fix a small memleak. patch by Limin Wang. Version full rev. 627 Release Date: Mar 4, 2007 compile fix for GCC-3.3 on OSX, based on a patch by Patrice Bensoussan % patrice P bensoussan A free P fr% Note: regression test still do not pass with GCC-3.3, but they never did as far as I can remember. cosmetics in regression test regression testing, run similar to fprofiled: VIDS='vid_720x480.yuv' make test Version full rev. 624 Release Date: Mar 1, 2007 add ability to generate doxygen documentation; make dox Version full rev. 623 Release Date: Feb 23, 2007 oops, scenecut detection failed to activate when using threads and not using B-frames Version full rev. 622 Release Date: Jan 30, 2007 extras/getopt.c was BSD licensed. replace with a LGPL version (from glibc). Version full rev. 621 Release Date: Jan 26, 2007 Fix build issues on Linux. Only gcc-4.x is supported, as on OSX. Cleans up a few inconsistencies in the code too. Version full rev. 620 Release Date: Jan 22, 2007 tweak block_residual_write_cavlc. up to 1% faster lossless, no difference at normal bitrates. Version full rev. 619 Release Date: Jan 21, 2007 don't assume int is exactly 4 bytes Version full rev. 618 Release Date: Jan 12, 2007 make array_non_zero() compatible with -fstrict-aliasing Version full rev. 617 Release Date: Jan 10, 2007 Honor CFLAGS and LDFLAGS set by the user Version full rev. 616 Release Date: Jan 3, 2007 Check whether 'echo -n' works, otherwise try printf (fixes build on current OS X 10.5) Version full rev. 615 Release Date: Jan 2, 2007 Check version of nasm on OS X / Intel Version full rev. 614 Release Date: Dec 21, 2006 wrong reference frames were used with refs>=14 + pyramid (regression in r607) enable thread synchronization primitives on linux too Version full rev. 612 Release Date: Dec 20, 2006 fix a crash with x264_encoder_headers() + threads Version full rev. 611 Release Date: Dec 16, 2006 don't skip autodection on configure --enable-pthread more win32threads -> pthreads cosmetics: rename list operators to be consistent with Perl, and move them to common/ win32: use pthreads instead of win32threads. for some reason, pthreads is much faster. New threading method: Encode multiple frames in prallel instead of dividing each frame into slices. Improves speed, and reduces the bitrate penalty of threading. Side effects: It is no longer possible to re-encode a frame, so threaded scenecut detection must run in the pre-me pass, which is faster but less precise. It is now useful to use more threads than you have cpus. --threads=auto has been updated to use cpus1.5. Minor changes to ratecontrol. New options: --pre-scenecut, --mvrange-thread, --non-deterministic Version full rev. 606* Release Date: Dec 13, 2006 Do not assume anything about sizeof(cpu_set_t). Version full rev. 605 Release Date: Dec 12, 2006 Add support for kFreeBSD (FreeBSD kernel with GNU userland). Version full rev. 604 Release Date: Nov 28, 2006 Add Altivec implementations of add8x8_idct8, add16x16_idct8, sa8d_8x8 and sa8d_16x16 Note: doesn't take advantage of some possible aligned memory accesses, so there's still room for improvement Version full rev. 603 Release Date: Nov 26, 2006 Force alignment of the fake .rodata on MacIntel Version full rev. 602 Release Date: Nov 23, 2006 don't treat vbv_maxrate as a minrate too if it's higher than target average bitrate. Version full rev. 601 Release Date: Nov 19, 2006 Merges Guillaume Poirier's AltiVec changes: Adds optimized quant and subdct8 routines Faster subdct routines ~8% overall speed-up with default settings Version full rev. 600 Release Date: Nov 7, 2006 10% faster deblock mmx functions. ported from ffmpeg. checkasm: ignore insignificant differences in floating-point ssim Version full rev. 598 Release Date: Oct 31, 2006 display final ratefactor in abr when a loose vbv is applied. (still disabled in true cbr) Version full rev. 597 Release Date: Oct 30, 2006 fix parsing of --deblock %d,%d (beta was ignored) compute chroma_qp only once per mb Version full rev. 595 Release Date: Oct 29, 2006 rd refinement of intra chroma direction (enabled in --subme 7) patch by Alex Wright. Version full rev. 594 Release Date: Oct 19, 2006 fix a crash in avc2avi Version full rev. 593 Release Date: Oct 17, 2006 skip deblocking and motion interpolation when using only I-frames Version full rev. 592 Release Date: Oct 14, 2006 cosmetics allow fractional values of crf Version full rev. 590 Release Date: Oct 11, 2006 prefetch pixels for motion compensation and deblocking. fix a crash on interlace + >8 reference frames no more decoder. it never worked anyway, and the presence of defunct code was confusing people. Version full rev. 587 Release Date: Oct 10, 2006 compute pskip_mv only once per macroblock, and store it slightly faster chroma_mc_mmx missing emms in plane_copy_mmx Version full rev. 584 Release Date: Oct 7, 2006 merge center_filter_mmx with horizontal_filter_mmx 1.5x faster center_filter_mmx (amd64) Version full rev. 582 Release Date: Oct 6, 2006 mmx/prefetch implementation of plane_copy no more vfw gtk fixes: in Makefile fix datadir for mingw users remove the shared lib during the clean rule use $(ENCODE_BIN) instead of x264_gtk_encode add some $(DESTDIR) and create some directories when necessary remove -lintl statfile_length -> statsfile_length fix the "sensitivity" of the widget of update_statfile the logo is now handled correctly on windows added: beginning of multipass support patch by Vincent Torri. Version full rev. 579 Release Date: Oct 5, 2006 accept mencoder's option names as synonyms (api only, not in x264cli) Version full rev. 578 Release Date: Oct 3, 2006 simplify satd_sse2 better error checking in x264_param_parse. add synonyms for a few options. Version full rev. 576 Release Date: Oct 2, 2006 fix some strides that weren't a multiple of 16. tweak motion compensation amd64 asm. 0.3% overall speedup. strip local symbols from asm .o files, since they confuse oprofile add an option to control direct_8x8_inference_flag, default to enabled. slightly faster encoding and decoding of p4x4 + B-frames, and is needed for strict Levels compliance. Version full rev. 572 Release Date: Oct 1, 2006 allow custom deadzones for non-trellis quantization. patch by Alex Wright. move zigzag scan functions to dsp function pointers. mmx implementation of interlaced zigzag. Version full rev. 570 Release Date: Oct 1, 2006 support interlace. uses MBAFF syntax, but is not adaptive yet. Version full rev. 569 Release Date: Sep 28, 2006 allow --zones in cqp encodes Version full rev. 568 Release Date: Sep 27, 2006 cli: fix some typos in vui parameters from r542. patch by Foxy Shadis. Version full rev. 567 Release Date: Sep 26, 2006 Add an "all" rule to the Makefile. Ideally "default" should be renamed, but I don't want to break existing scripts. Version full rev. 566 Release Date: Sep 25, 2006 workaround: on some systems, alloca() isn't aligned Version full rev. 565 Release Date: Sep 23, 2006 missing picpop Version full rev. 564 Release Date: Sep 14, 2006 fix a buffer overread from r540 Version full rev. 563 Release Date: Sep 13, 2006 cosmetics (spelling) faster ESA Version full rev. 560 Release Date: Sep 11, 2006 Use the autotool's config.guess script instead of uname to check the system and CPU types, to avoid issues when using for instance a 32-bit userland on top of a 64-bit kernel. Add the autotool's config.guess script so that we can use it instead of uname in the configure script. Version full rev. 558 Release Date: Aug 23, 2006 10l in r553 Version full rev. 557 Release Date: Aug 21, 2006 ssim broke on amd64 w/ pic. Version full rev. 556 Release Date: Aug 19, 2006 MSVC compatibility fix from Haali Version full rev. 555 Release Date: Aug 18, 2006 support changing some more parameters in x264_encoder_reconfig() SSIM computation. (default on, disable by --no-ssim) Version full rev. 553 Release Date: Aug 17, 2006 configure: --enable-debug reduces optimization to -O1 cosmetics Version full rev. 551 Release Date: Aug 4, 2006 gcc -fprofile-generate isn't threadsafe cli: move some options from --help to --longhelp cli: don't try to get resolution from filename unless input is rawyuv r542 broke --visualize Version full rev. 547 Release Date: Aug 3, 2006 Nicer OS X x264_cpu_num_processors (thanks David) Support OS X and BeOS in x264_cpu_num_processors Fixes contexts allocation with threads=auto select initial qp for abr and cbr baased on satd and bitrate, rather than cq24. --threads=auto to detect number of cpus api addition: x264_param_parse() to set options by name fix a rare NaN in ratecontrol move quant_mf[] from x264_t to the heap, and merge duplicate entries GTK update. patch by Vincent Torri. fixed: cleaning of Makefile time elapsed seems broken ('total time' label replaced by 'time remaining') text entries of the status window are now not editable added: compilation from x264/ (add --enable-gtk option to configure) shared lib creation if --enable-shared is passed to configure x264gtk.pc --b-rdo, --no-dct-decimate new option: --qpfile forces frames types and QPs. (intended for ratecontrol experiments, not for real encodes) Version full rev. 537 Release Date: Jul 18, 2006 api change: select ratecontrol method with an enum (param.rc.i_rc_method) instead of a bunch of booleans. Version full rev. 536 Release Date: Jul 17, 2006 slightly faster mmx dct OpenBSD build fixes. patch by Vizeli Pascal (pvizeli at yahoo dot de) Version full rev. 534 Release Date: Jul 9, 2006 mc_chroma width2 mmx Version full rev. 533 Release Date: Jun 29, 2006 make libx264.so symlink relative Version full rev. 532 Release Date: Jun 13, 2006 added: direct=auto no-fast-pskip vbv cqm tooltips (without descriptions yet) translations `make clean` for .exe when file exists, ask for override fixes: debug level bug bitrate slider bug mixed-refs can be set only if ref>1 i8x8 can be set only if 8x8 transform is enabled # of threads capped at 4 fourcc can't be removed cosmetics Version full rev. 531 Release Date: Jun 1, 2006 vfw installer: tweak nsis compression. patch by Francesco Corriga. Version full rev. 530 Release Date: May 31, 2006 Fixed typo that caused x264_encoder_open to always fail Version full rev. 529 Release Date: May 30, 2006 check some mallocs' return value make -> $(MAKE) Version full rev. 527 Release Date: May 24, 2006 convert non-fatal errors to message level "warning". Version full rev. 526 Release Date: May 23, 2006 fix a memory alignment. (no effect on x86, but might be needed for other simd) Version full rev. 525 Release Date: May 21, 2006 when using DEBUG_DUMP_FRAME, write decoded pictures in display order. patch by Loic Le Loarer. non-referenced B-frames should have the same frame_num as the following ref frame, not the previous. patch by Loic Le Loarer. Version full rev. 523 Release Date: May 12, 2006 set the SPS constraint_set[01]_flag based on the profile in use, just in case some decoder cares Version full rev. 522 Release Date: May 11, 2006 msvc doesn't like C99 named array initializers allow sar=1/1. patch by Loic Le Loarer. faster intra search: filter i8x8 edges only once, and reuse for multiple predictions. Version full rev. 519 Release Date: May 10, 2006 faster intra search: some prediction modes don't have to compute a full hadamard transform. x86 and amd64 asm. Version full rev. 518 Release Date: May 8, 2006 --sps-id, to allow concatenating streams with different settings. Version full rev. 517 Release Date: May 4, 2006 typo in expand_border_mod16 Version full rev. 516 Release Date: Apr 30, 2006 typo impaired 2pass bitrate prediction. Version full rev. 515 Release Date: Apr 29, 2006 Let the user choose the compiler with "CC=xxx ./configure" Version full rev. 514 Release Date: Apr 29, 2006 More vector types fixes for gcc 3.3 Version full rev. 513 Release Date: Apr 29, 2006 More vector casts to try and make compilers happier Version full rev. 512 Release Date: Apr 25, 2006 Use sa8d instead of satd for i8x8 search. +.01 dB, -.5% speed Version full rev. 511 Release Date: Apr 25, 2006 Before evaluating the RD score of any mode, check satd and abort if it's much worse than some other mode. Also apply more early termination to intra search. speed at -m1:+1%, -m4:+3%, -m6:+8%, -m7:+20% Version full rev. 510 Release Date: Apr 25, 2006 common/ppc/pixel.c: fixed illegal implicit casts of vector types Version full rev. 509 Release Date: Apr 25, 2006 Added %$#@#$! support for #@%$!#@ armv4l CPU. Version full rev. 508 Release Date: Apr 24, 2006 When evaluating predictors to start fullpel motion search, use subpel positions instead of rounding to fullpel. about +.02 dB, -1.6% speed at subme>=3 patch by Alex Wright. Version full rev. 507 Release Date: Apr 24, 2006 mmx implementation of x264_pixel_sa8d Version full rev. 506 Release Date: Apr 21, 2006 10l in r463 (q0 i16x16 dc was permuted) Version full rev. 505 Release Date: Apr 20, 2006 typo in r504 Version full rev. 504 Release Date: Apr 20, 2006 update msvc project files. patch by anonymous. Version full rev. 503 Release Date: Apr 19, 2006 Before, we eliminated dct blocks containing only a small single coefficient. Now that behavior is optional, by --no-dct-decimate. based on a patch by Alex Wright. Version full rev. 502 Release Date: Apr 17, 2006 Enables more agressive optimizations (-fastf -mcpu=G4) on OS X. Adds AltiVec interleaved SAD and SSD16x16. Overall speedup up to 20%. Version full rev. 501 Release Date: Apr 17, 2006 faster cabac_encode_bypass Version full rev. 500 Release Date: Apr 16, 2006 restored AltiVec dct Version full rev. 499 Release Date: Apr 16, 2006 more AltiVec mc, ~4.5% overall speedup Version full rev. 498 Release Date: Apr 12, 2006 slightly faster loopfilter Version full rev. 496 Release Date: Apr 12, 2006 cosmetics in sad/ssd/satd mmx Version full rev. 497 Release Date: Apr 12, 2006 3% faster satd_mmx Version full rev. 495 Release Date: Apr 11, 2006 store quoted configure options. needed e.g. for multiple args under --extra-cflags. Version full rev. 494 Release Date: Apr 11, 2006 fix a yasm-incompatible syntax in x86 asm Version full rev. 493 Release Date: Apr 11, 2006 yasm noexec stack Version full rev. 492 Release Date: Apr 10, 2006 more interleaved SAD. 25% faster halfpel. Version full rev. 491 Release Date: Apr 10, 2006 more interleaved SAD. 1% faster umh, 6% faster esa. Version full rev. 489 Release Date: Apr 10, 2006 Added support for ppc64. I'm really f*ing tired of having to do this. Version full rev. 490 Release Date: Apr 10, 2006 interleave multiple calls to SAD. 15% faster fullpel motion estimation. Version full rev. 488 Release Date: Apr 8, 2006 use LDFLAGS when linking shared lib Version full rev. 487 Release Date: Mar 29, 2006 compilation fix for mingw, darwin (off_t was undefined) Version full rev. 486 Release Date: Mar 28, 2006 (r486) GTK: support yuv4mpeg input. patch by Vincent Torri. (r485) GTK: fix avs input. patch by Vincent Torri. (r484) cli: support yuv4mpeg input. patch by anonymous. (r483) GTK: compilation fixes Version full rev. 477 Release Date: Mar 23, 2006 10l in r473 and stdin RD subpel motion estimation (--subme 7) cosmetics in cabac_mb_cbf Version full rev. 451** Release Date: Mar 4, 2006 10l in r443 (p4x4 chroma) common/i386/i386inc.asm: tell the ELF linker about our stack properties so that it does not assume the stack has to be executable. configure common/i386/i386inc.asm: got rid of -DFORMAT_* nasm flags and use built-in preprocessor tests instead. common/i386: factored the .rodata section declaration into i386inc.asm. configure: activate minor nasm optimisations, such as assembling "add eax, 8" as "add eax, byte 8". common/i386/*.asm: don't use the "GLOBAL" reserved word, some versions NASM complain about it. Replaced it with "GOT_ebx".		Rate this software: Your Rating: You have not voted yet! 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