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...
Post a reply to this message
|