Rumors of MPEG-2's death greatly exaggerated? Digigami does HD on a regular DVD
What's that funny taste in my mouth? Not very familiar
at all, it's like chicken but not. Oh, it's crow, and Digigami says they're going to be bringing
plenty more for every MPEG-2 doubter. Many people (including me) thought
Sony was crazy for sticking to MPEG-2 for their Blu-ray offerings. I mean, why do it, even with their new Blu-ray discs, such an ancient codec is taking up valuable space that could be used for yet another director commentary. But thats not so, according to their press release today, they can encode a 720p file with an average bitrate of between 3-7 mbit/s, good for the same size as a regular DVD without any newfangled h.264 technology. Of course, we all know many people are squeezing the bitrate out of our HD already (cable, satellite providers) with varied results, so the real question is if your eyes can tell the difference. They have a few sample movies up on their site, so take a look.
Reading the press release, their tone is downright cocky, with Digigami's CTO stating "It amuses us that our MPEG-1 VBR encoder can also match and outperform H.264 on many progressive encoding tasks at HD frame sizes. MPEG-1 is 6 years older than MPEG-2 and even more widely adopted, reliable, proven and trustworthy". They also have a blog, with the writer saying they will "take on all comers", I like this, time we got some personality into the fight.
It will be interesting to see if their compression technology is utilized by Sony or others and how this will affect the HDTV arms race.
















Reader Comments (Page 1 of 1)
Nero @ Dec 23rd 2005 5:48PM
I am not sure why there is all this MPEG2 bashing lately when talking of the next gen optical formats. I was at CES last year and all the 'high end' new codecs (VC1/WMV and H.264) looked awful compared to good ol MPEG2. Mostly the problem is the content producers seem to think they need to bit starve their content with MPEG4 codecs. I saw one demo of Blu-Ray with all three codecs - MPEG2 at 25Mbps, and WMV/VC1 and H.264 each at 12Mbps. The MPEG2 feed looked far better with no false contouring (banding) or macroblocking artifacts. Who cares if it uses more space on a 25GB platter. Burn it all, I don't care but I want clean video. MPEG2 is very mature and there are excellent hardware encoders. It will take years for the other codecs to be tweaked to match the quality and consistancy of MPEG2.
Gen Kiyooka @ Dec 26th 2005 9:02AM
MPEG-2 VBR at SD DVD bitrates has been verified by Sagittaire at Doom9.org. He re-encoded an HD trailer from the Apple HD site down to MPEG-2 VBR 3.8 mbits/s avg (SD DVD is between 3 and 8 mbits/s), and everyone agrees it looks great. The stream is very nearly constant Q (around 6.5), and Superbit DVDs, which IMHO, are the best encoded MPEG-2 around, are semi-constant Q between 2-6. Most macroblock artifacting occurs in 10 and up.
http://forum.doom9.org/showthread.php?t=96145&page=15&pp=20
At the same time, the H.264 pros over there showed me some very low bitrate samples that looked excellent. However, the only encoder to support all professional coding features, including interlacing, is Ateme, at $9000K or "unobtanium" depending on who you ask. So I am looking forward to comparing as Nero did at CES, which is high-bitrate, HD.
At this point, I am a believer in both codecs for different reasons.
Gen Kiyooka
Digigami