[MPlayer-users] DivX/XviD qpel decoding

[Jakub Misak]

Hi,

I noticed that MPlayer with libavcodec can't properly decode video encoded 
with DivX 5.1 (possibly XviD, too) and Qpel. There are some slightly 
distorted "waves" in some parts of the picture, which disappear with the next 
keyframe. It's quite subtle and noticeable only in some particular places, 
but the artifacts are not there with the DivX 5.0.5 decoder.

I'm using MPlayer 1.0-pre2 (couldn't try CVS as it doesn't compile on my 
machine), I tried all -lavdopts bug, er, ec, idct (0-7) options mentioned in 
the man page, but nothing helps, in fact some of the suggested DivX/XviD qpel 
bug options cause chroma smearing. Are there any hidden undocumented lavc 
decoding workarounds or is it a bug? I've uploaded a short sample to 
mplayerhq.hu/MPlayer/incoming - the DivX51-Qpel files.