Doom9's Forum - View Single Post - Announcing Project Rémoulade [DivX H.264 codec]

Dark Shikari · 15th May 2008, 06:16

Ugh... first bit of dissatisfaction.

DivX's decoder incorrectly ignores the header bit that states "qp0 should be interpreted as lossless." Unfortunately, this means that despite the DivX decoder's incredibly fast CABAC decoding it is completely useless for dealing with lossless content. Both CoreAVC and FFDshow can handle the lossless content correctly.

I would hope this would not have been ignored given the implementation of such relatively obscure features like High 10 and 4:2:2, which are much more difficult to implement than lossless, which literally consists of a couple dozen lines of code in order to bypass iDCT/dequant (basically trivial).

15th May 2008, 06:16	#9 \| Link
Dark Shikari x264 developer Join Date: Sep 2005 Posts: 8,666	Ugh... first bit of dissatisfaction. DivX's decoder incorrectly ignores the header bit that states "qp0 should be interpreted as lossless." Unfortunately, this means that despite the DivX decoder's incredibly fast CABAC decoding it is completely useless for dealing with lossless content. Both CoreAVC and FFDshow can handle the lossless content correctly. I would hope this would not have been ignored given the implementation of such relatively obscure features like High 10 and 4:2:2, which are much more difficult to implement than lossless, which literally consists of a couple dozen lines of code in order to bypass iDCT/dequant (basically trivial). __________________ Follow x264 development progress \| akupenguin quotes \| x264 git status ffmpeg and x264-related consulting/coding contracts \| Doom10 Last edited by Dark Shikari; 15th May 2008 at 06:23.