[mythtv-users] VDPAU can't decode ffmpeg MPEG-4?

Johnny jarpublic at gmail.com
Tue Jan 19 01:55:11 UTC 2010

> I have a non-lossless transcoder profile that uses the MPEG-4 video
> codec and the MP3 audio codec.  I use VDPAU Normal as my playback
> profile, on an ION system.  I just noticed from the logs that these
> files are resulting in software decoding.  This causes some stuttering
> on 1080i recordings.
> Is this expected?  Are there some options that I should or shouldn't
> use in that transcoder profile that would allow for hardware decoding?

MPEG-4 is not specific enough to answer your question. Most VDPAU
cards don't decode MPEG-4 part 2 (i.e. xvid/divx). Only the newest
cards (2xx models) have added hardware decoding of MPEG-4 part 2 with
VDPAU. All of the VDPAU cards can do hardware decoding of MPEG-4 part
10 (i.e. H264).

More information about the mythtv-users mailing list