Terry Barnaby wrote:
Daniel Kristjansson wrote:
On Mon, 2005-05-02 at 20:31 +0100, Terry Barnaby wrote:
Daniel Kristjansson wrote:
Thanks for adding the patch.
I agree there should not be an exit there, but there does not seem
to be a way of returning an error from this. I must admit, with my
searching through the libavformat and libavcodec code fro the problem there is some room for improvement !
Yep, though it is best to send fixes directly to ffmpeg, to keep syncing simpler. We've synced bugs back into the code from ffmpeg before.
Now I have got the channel changing working better, (although not ideal as there should be no need to close down and re-create Codecs, (this could be done in mpegts) ...), I would like to get the new merged Xv/XvMC code working with XvMC VLD. Is it worth me having a look at this now, or shall I hang fire untill you have completed the change to the Xv/XvMC init ?
Now is a good time, I'm holding back on Xv/XvMC changes this week to allow Andy Poling a chance to get his chromakey OSD patch ready for CVS.
-- Daniel
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Ok, any pointer to get going ? I have just re-compiled from CVS. With XvMC VLD (bob deinterlace enabled or disabled) I get very garbaled sound, Screen display is stuterry with frequent MPEG blocking atifacts. CPU usage is about 14%, which is low (normally about 18%). Mythfront end gives the following error messages:
2005-05-02 21:13:24.504 AddInheritence(A ) Error, future=frame 2005-05-02 21:13:24.747 AddInheritence( B ) Error, future=frame 2005-05-02 21:13:24.984 AddInheritence( C ) Error, future=frame 2005-05-02 21:13:25.463 AddInheritence( D ) Error, future=frame 2005-05-02 21:13:25.704 AddInheritence( E ) Error, future=frame 2005-05-02 21:13:25.944 AddInheritence( F ) Error, future=frame 2005-05-02 21:13:26.429 AddInheritence(A ) Error, future=frame 2005-05-02 21:13:26.661 AddInheritence( B ) Error, future=frame 2005-05-02 21:13:26.904 AddInheritence( C ) Error, future=frame 2005-05-02 21:13:27.384 AddInheritence( D ) Error, future=frame 2005-05-02 21:13:27.623 AddInheritence( E ) Error, future=frame 2005-05-02 21:13:27.864 AddInheritence( F ) Error, future=frame
When set to use Xv display and sound is fine although CPU usage is greater than MythTv CVS 2005-04-22 80% versis 70%.
Cheers
Terry
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Hi Daniel,
Another point of information on this: I can get rid of the "AddInheritence" error messages by removing line 77 in xvmcvldvideo.c "render->p_future_surface = render->p_surface;" This line may be incorrect ...
This does not affect things much. With some debug turned on I get the following info, it appears that the video is going at half frame rate ???
2005-05-03 07:23:09.039 A/V diverged by 6.41477 frames, extending frame to keep
audio in sync
2005-05-03 07:23:09.119 A/V diverged by 6.44233 frames, extending frame to keep
audio in sync
2005-05-03 07:23:09.199 A/V diverged by 6.57548 frames, extending frame to keep
audio in sync
2005-05-03 07:23:09.208 positionMap[ 42 ] == 10243932.
2005-05-03 07:23:09.279 A/V diverged by 6.6566 frames, extending frame to keep a
udio in sync
2005-05-03 07:23:09.359 A/V diverged by 6.5362 frames, extending frame to keep a
udio in sync
'video_output' mean = '79991.91', std. dev. = '565.37', fps = '12.50'
Terry
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It looks like the problem is with AVSync (again !).
If I set "disableaudio" in NupplePlayer.cpp video display is fine. If I set "avsync_avg = frame_interval" at the top of NuppelVideoPlayer::WarpFactor() all is Ok (bar audio delayed/infront).
What is supposed to happen in NuppelVideoPlayer::AVSync() when "diverge > MAXDIVERGE" ? Could it be that with XvMC VLD video frames are not actually "extended" ?
Terry
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