Digital Digest -> DVD Digest
DVD Conversion Guide
ABOUT DVD DIGEST
Version 2.0 (14 February 2001)
As you probably know, DVDs are encoded in an MPEG-2 format and encased in a file called a VOB (Video Object) file. For those interested in backing up their DVDs, it is almost impossible to do a 1:1 copy due to the un-availability of writable DVDs and the small sizes of CDs (650MB vs 8000 MB for DVDs). Conversion, therefore, is needed if you plan to backup your DVDs to CDs.
This guide briefly introduces some techniques to convert these very large VOB files to a format less space consuming, like VCDs, SVCDs and DivX, using the many software and techniques available.
Note, this guide is fairly advanced and is purely optional for those who seek to explorer more into the world of digital video editing and conversion. And also, please respect the copyright laws in your country.
DVD Ripping is the process of copying DVD files (eg. VOB, IFO, BUP files) from the DVD to your hard-drive, without the CSS (Content Scrambling System) scrambling the files during the copying process. This essentially makes a 1:1 perfect copy of the file of the DVD on your hard-drive, and so the files will have the original quality/size. In most cases, it is necessary to do this prior to converting the actual VOB files. Below are some guides on how to do this :
DVD Ripping Guide - our own comprehensive DVD ripping guide
Macintosh DVD Ripping FAQ - Find out all you need about DVD ripping for the Mac