mythtv at cvs
Oct 23, 2009, 2:17 PM
Post #4 of 5
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Re: Ticket #7405: MythVideo VDPAU playback errors on some MKV h264 files
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#7405: MythVideo VDPAU playback errors on some MKV h264 files
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Reporter: travis@… | Owner: janne
Type: defect | Status: new
Priority: minor | Milestone: unknown
Component: MythTV - Video Playback | Version: 0.22rc1
Severity: medium | Mlocked: 0
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Comment(by tralph11@…):
Travis, the problem is that you are playing an h264 encoded video with
level 5.1 and 11 reference frames. This requires a larger number of VDPAU
buffers allocated. The reason that your file plays in mplayer is that it
is using more buffers than mythtv. I successfully played your video with
the number of VDPAU buffers set to 23. I would suggest using the minimum
you need to play to avoid using too many resources. The default for mythtv
is 17 and can be changed one of two ways.
1. change the #define NUM_VDPAU_BUFFERS in
libs/libmythtv/videoout_vdpau.cpp to a higher number.
2. in the video playback profiles add a filter called vdpaubuffersize=n
where n is the number of buffers.
Also, I believe it is planned to add more intelligent/automatic buffer
allocation in the future, but for now you will just need to find what
works best for your videos.
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Ticket URL: <http://svn.mythtv.org/trac/ticket/7405#comment:3>
MythTV <http://www.mythtv.org/>
MythTV
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