scott wrote:
>> 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.)
> 
> Huh? Even MPEG2 (as used on DVDs) can reduce the raw bitrate from 240 
> Mbit to 10 Mbit (so 24x smaller) with little detectable quality loss.

Now compare the MPEG2 video back-to-back with the uncompressed original. 
Are you seriously telling me there is *no* detectable loss of quality?

Sure, it's a fairly small loss, but it *is* noticable. I wonder what the 
bitrate would need to be increased to for it to be impossible to tell 
the difference...

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