scott wrote:
>> (Of course, you never see DVDs that look blurry and messed up. 
>> Presumably that means they figured out how to avoid that in MPEG2. 
>> Unfortunately, MPEG2 is the hardest codec under the sun to find 
>> software for - presumably because they use it on DVDs, so everybody 
>> wants to charge you *money* for it...)
> 
> Xvid4PSP offers MPEG2 PAL and NTSC format options, with encoding options 
> like "1-pass 8mbit", "2-pass 8mbit", "CBR 9.2mbit", and "copy" which 
> presumably does no reencoding if your source file is already MPEG2 
> compatible.
> 
> I would expect those would give the same results as a commerical DVD.

Heh. My DVD authoring software [came free with the DVD burner] doesn't 
give me quality *quite* that good. (Although it is fairly close.)

> But for uploading to YouTube, I would use a more modern codec like xVid 
> (which they accept) that will give you smaller files for the same quality.

At the moment, just getting good quality at all - at *any* filesize - 
would be impressive.

What I can't figure out is this: There are dozens of audio codecs that 
can take a sound file and make it *at least* 5x smaller with absolutely 
_NO_ detectable loss of quality at all. (And far smaller still if you're 
willing to sacrifice a little clarity.) But it seems there are no codecs 
that can shrink video without a visible loss of quality. (Aside from a 
few lossless codecs which usually give you about ~20% smaller or so.)

I guess video is just a much harder problem...

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