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Old 15th May 2008, 06:38   #16  |  Link
Dark Shikari
x264 developer
 
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Join Date: Sep 2005
Posts: 8,666
Quote:
Originally Posted by DigitAl56K View Post
Thanks! I'll log it.

Please keep in mind when you're testing that this is beta 1, whereas the other decoders you've been using have been available publicly for quite some time - i.e. we do expect some issues to come up.
Of course I was just hoping that you weren't planning to omit the feature

One general note about lossless: the original lossless profile specified has been removed from the H.264 standard (but everyone still uses it). In its place, they added a new one which uses a limited form of pixel prediction, making it slightly better (but not nearly as good as if it used a good prediction method, like paeth/median). As far as I can tell, nobody supports this yet, so it isn't particularly important to implement it.

Now, the question comes up: how do you tell the difference between these two lossless profiles? The answer is the profile ID--encoders should correctly write the ID, so if you want to include support for both lossless modes, you can check the profile ID to check which one should be used.
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