Archive for May, 2007

Free Software Guide

Monday, May 28th, 2007

I’ve just finished writing another guide. Unlike the other articles I usually write, this one is not entirely about digital video. Instead, what I have done is to see if it is possible to set up a computer with only free software (Windows XP excepted), and what I have found is that not only is it possible, you actually end up with a great system.

This guide (creatively titled the “Free Software Guide”) starts with a new computer with only Windows XP (or Vista), and then recommends internet, security, file transfer, office/productivity, graphics, multimedia and even games – all are freeware or open source (apart from the ad-ware supported Eudora).

Long gone are a time when freeware meant software that looks bad and runs badly, with hardly any features. Today, freeware and open source sometimes represent the best of breed software, and your best choice even when commercial options are available. So take a look at our guide, which only really provides a small sample of all the free goodies out there, and save yourself a few hundred bucks in the process.

The age old question: LCD or Plasma?

Wednesday, May 23rd, 2007

I visit a lot of forums, and I have yet to visit one where the question “LCD or Plasma” hasn’t bee posted yet. When buying a new TV, this question will inevitably come up, so here are some tips to help you choose.

Why you should buy an LCD?
Plasma only comes in 42″ or above sizes, so if you want something smaller, LCD is your only choice. LCDs will usually have a brighter picture (higher contrast), and more vibrant colors (although not to everyone’s taste, some say the colors are unrealistic). The better brightness helps if your screen is placed in a bright room.

Why you shouldn’t buy an LCD?
Older LCD panels suffer from motion blurring, due to the high response time of the panel. Newer models have response times less than 8ms, and so suffer less (but still do suffer) from the problem. Viewing angles (both vertical and horizontal) can be a big problem, especially with a large size screen – even when sitting straight in front, the edges might be less visible/brighter than the center, but again, newer models will suffer less from this problem, if at all.

Why you should buy a Plasma?
In 50″ or above sizes, plasma panels still represent the better value for money. Plasma technology has been around for a while now, most models are in their 7th or 8th generation, and so the technology has matured quite a bit. Some prefer plasma’s more natural contrast/brightness, although you will need a more dedicated home theatre environment (ie. darker room) to enjoy it as its best. Viewing angle is amazing on a plasma, as good as a CRT in practical terms.

Why you shouldn’t buy a Plasma?
Plasma screens can sometimes offer blacks that are more gray due to the inherent nature of the technology (although newer models have ways to reduce this problem). Motion judder can also be a problem with plasma screens. Then there is the issue of plasma burn in, which is not as serious as most people think. Early panels suffered from this, but this is a non issue with most newer panels. Some screens suffer from temporary burn-in, but it usually goes away after you switch of the panel for a while or watch something else. What most people fail to realise is that old CRT TVs suffers from burn-in much more so than plasmas ever will, and LCDs do suffer from burn-in as well.

The best way to find out which is suited to you is to go to your local electronics store and see which screen grabs your attention the most. Of course, this relies on the store having set up these screens properly, but you should get a good idea. Stores usually have very harsh lighting, and this will favor LCDs more, so keep this in mind. And if possible, ask them if you can bring along your own equipment to test these TVs, for example bring your Xbox 360 and see how games play on it.

My ADSL Saga

Saturday, May 19th, 2007

A couple of blog posts before, I mentioned that I switched over from iiNet to Internode and joined the world of 8 Mbit ADSL. Unfortunately, the story didn’t just end there.

Upon getting the new 8 Mbit connection, it became quite obvious that this connection was not all that stable. In fact, I was dropping out 10 to 20 times a day. After playing around with my modem settings and doing an isolation test, I decided that the problem wasn’t on my end. I ran Internode tech support, didn’t have to wait very long to speak to a real person at all which was a pleasant surprise, and a line fault was put in with Telstra (our phone provider).

Before I go on, it’s probably necessary to explain a bit about the ADSL infrastructure here in Australia. Telstra has a monoply on our telecommunication infrastructure (phone lines, exchanges), and ADSL providers like Internode purchase ADSL services wholesale from Telstra and then sell on to the public. As such, any line faults is Telstra’s responsibility. Because of Telstra’s advantageous position in terms of the infrastructure, the ACCC (our competition watchdog) has tried to level the playing field and allow companies such as Internode some chance to compete. Telstra is not happy about it.

Back to my problem. Internode arranged for a Telstra technician to come over and fix the problem on Tuesday. The technician did arrive, but instead of fixing the problem, my other phone line (not used for ADSL) was cut (but we did not found out until a day later). On Wednesday, Internode called me and said that they had asked Telstra to take a look again because their logs showed that I was still having drop out issues. Telstra determined that there was a foreign battery source on the phone line and that everything would be fixed by Friday. A separate call was made to Telstra to tell them about my cut phone line, and they promised it would be fixed on Thursday. Thursday came and went and the second phone line was still dead, so another call was made and now they promised a technician would come over on Friday.

Friday morning, and the technician did come. The second phone line was fixed (apparently the first technician had cut off the line for some reason), and the external battery source problem was looked at too and promptly fixed. I checked my ADSL connection, and instead of the 4500 kbps ADSL link speed, it was now 7616! Unfortunately, the SNR was at a ridiculously low 5 dB (6 dB is the minimum for maintaining a stable connection, the higher the SNR the better), and now the drop outs were even worse than before – 3 or 4 times an hour! So another call to Internode support, and they put in another request for Telstra to have a look. This was Friday afternoon already, so it looked like I would be stuck with this until Monday.

Saturday 10pm, I get a phone call and it’s from Internode. They said that Telstra have added a stability profile was added to my phone line, and lo and behold, the line SNR had increased to 11 dB. I can now only connect at 6144 kbps as opposed 7616, but what’s the point of a fast connection that drops out every 20 minutes? And 6144 is still 4 times faster than my old 1.5 Mbps connection. While I can’t be 100% certain that the drop out issues have finally gone, but things are looking up.

Internode were great throughout the ordeal. They didn’t really have much control over any of this, since all Internode could do was rely on Telstra to do their job (a big ask). Internode kept me informed all the time with a dozen or so phone calls (it’s refreshing for technical support to be calling you, and not the other way around), and now it’s easy to see why they have been voted as the best ISP by several places. My opinion of Telstra, on the other hand, remains the same.

New H.264 website

Saturday, May 19th, 2007

In collaboration with a friend of mine, we’ve started a new website called H264info.com. It’s a small website that talks about H.264 and provides information, links, instructions and downloads for H.264.

I’m a huge fan of H.264. It’s taking a video compression format like DivX or XviD, and then adding even more compression on top of that – you can get a 25% file size reduction with very little quality difference. Best of all, unlike (in my opinion anyway) DivX or XviD, H.264 scales well up as well as down – 1080p clips look amazing (check out The Simpsons Movie 1080p trailer for yourself if you don’t believe me).

Apple is using it (see Steve Jobs getting excited over it here). Blu-ray and HD DVD are using. So is Sony in its PSP. Even Microsoft, with their competing VC-1 format, has jumped on board by adding support for it on the Xbox 360.

So why isn’t everybody else using it? Part of the problem is that it’s still relatively difficult to get H.264 movies to play on your computer, and the other is that most people don’t know about it. h264info.com will hopefully try and solve these problems.

H.264 on the Xbox 360

Thursday, May 10th, 2007

Following on from my previous blog entry on Xbox 360 H.264 playback, I’ve finally had the chance to test it out when the Spring Update was released yesterday.

So far, it’s a mixed bag, mainly due to niggly issues related to MP4 media sharing (or the lack of) in Windows Media Player.

What I have found so far:

  • Use the Zune software for media sharing, since it supports MP4
  • Use Baseline or Main Profile, since Zune only seem to support these
  • If you are using the Sharktooth’s x264 profile in MeGUI, you have to set the max bitrate to 10000 (from 25000), enable the Level restrictions to 4.1 (you will have to turn off “P4x4”)
  • Use AAC LC encoding, not HC. I used the Nero Digital encoder, LC 96 Kbps profile
  • When using the “AutoEncoder” function in MeGUI, try to make sure the “average bitrate” (even if you are using a set file size) doesn’t go too close to the 10 Mbps limit for the Xbox 360. From what I can understand, frames over 10 Mbps will still play, but artifacts and paused playback may result
  • Edit (11th May, 2007): With 1080p clips, use Baseline only
  • 720p, 1080p works well, as long as you stick to the restrictions above

No doubt I will know more tomorrow after more testing of 1080p, and I will have a guide written before the week’s end.

The playback quality is quite good, as expected with H.264, and I would really like to see some more TV episode downloads being released in this format ready, encoded to be compatible with the Xbox 360.

Edit (11th May, 2007): I have finished writing the Xbox 360 H.264 Conversion Guide.

And I’ve finally churned away from iiNet to Internode as my ADSL provider (reasons listed in this blog entry). I’m now downloading at more than 600 KB/s and uploading at around 40 KB/s, much better than my previous 155 KB/s and 26 KB/s. When I first connected, I was only doing 250 KB/s, until I used Unblocka to tweak my connection.