[mythtv-users] Buffer problems with VDPAU

Josu Lazkano josu.lazkano at gmail.com
Wed Mar 16 00:27:00 UTC 2011


Hello, I am getting problems with VDPAU since I start with MythTV (one
year ago). I am using Debian Squeeze with debian-multimedia
repository, on the playback menu I have "VDPAU Normal" profile. This
is what I get on the frontend when I try to watch satellite HD
channels:

2011-03-16 01:01:07.009 [h264 @ 0xb4c70f60]non-existing PPS 0 referenced
2011-03-16 01:01:07.009 [h264 @ 0xb4c70f60]decode_slice_header error
2011-03-16 01:01:07.009 [h264 @ 0xb4c70f60]no frame!
2011-03-16 01:01:07.394 VDPAU Painter: Clearing VDPAU painter cache.
2011-03-16 01:01:07.394 MythPainter: 1 images not yet de-allocated.
2011-03-16 01:01:07.502 VDPAU: Created 2 output surfaces.
2011-03-16 01:01:07.502 VDPAU: Created VDPAU render device 1920x1080
2011-03-16 01:01:08.164 Player(0): Forcing decode extra audio option
on (Video method requires it).
2011-03-16 01:01:08.165 AFD: Opened codec 0xaf4a2930, id(H264) type(Video)
2011-03-16 01:01:08.165 AFD: codec AC3 has 2 channels
2011-03-16 01:01:08.166 AFD: Opened codec 0xa852cc70, id(AC3) type(Audio)
2011-03-16 01:01:08.167 AFD: codec AC3 has 2 channels
2011-03-16 01:01:08.168 AFD: Opened codec 0xaf410570, id(AC3) type(Audio)
2011-03-16 01:01:08.168 AFD: Opened codec 0xaf4a3d30, id(DVB_SUBTITLE)
type(Subtitle)
2011-03-16 01:01:08.168 AFD: Opened codec 0xa852c7c0, id(DVB_SUBTITLE)
type(Subtitle)
2011-03-16 01:01:08.286 AO: Opening audio device 'both' ch 2(2) sr
48000 sf signed 32 bit reenc 0
2011-03-16 01:01:08.289 ALSA, Error: Setting hardware audio buffer size to 128
2011-03-16 01:01:08.289 ALSA, Error: Error opening
/proc/asound/card0/pcm3p/sub0/prealloc: Permission denied.
2011-03-16 01:01:08.289 ALSA, Error: Try to manually increase audio
buffer with: echo 128 | sudo tee
/proc/asound/card0/pcm3p/sub0/prealloc
2011-03-16 01:01:08.289 ALSA, Error: Unable to sufficiently increase
ALSA hardware buffer size - underruns are likely
2011-03-16 01:01:08.465 AudioPlayer: Enabling Audio
2011-03-16 01:01:08.681 Player(0): Waited 100ms for video buffers
AAAAAAAAAAAALLLLL
2011-03-16 01:01:08.687 Player(0): Waited 100ms for video buffers
AAAAAAAAAAAALLLLL
2011-03-16 01:01:08.704 Player(0): Waited 100ms for video buffers
AAAAAAAAAAAALLLLL
2011-03-16 01:01:08.807 Player(0): Waited 100ms for video buffers
AAAAAAAAAAAALLLLL
2011-03-16 01:01:08.824 Player(0): Waited 100ms for video buffers
AAAAAAAAAAAALLLLL
2011-03-16 01:01:08.830 Player(0): Waited 100ms for video buffers
AAAAAAAAAAAALLLLL
2011-03-16 01:01:08.905 VDPAU: Added 2 output surfaces (total 4, max 4)
2011-03-16 01:01:11.716 [h264_vdpau @ 0xb4c70f60]illegal short term
buffer state detected

There are video and audio buffer problems, I read on other posts that
the video buffer problem is caused for a high CPU usage. Is there any
solution for this?

I am using 195.36.31 Nvidia driver on a ION+Atom board with 2x1GB
memory, this is my xorg config:
http://dl.dropbox.com/u/1541853/xorg.conf

I will apreciate any help, I am trying to get working my father MythTV.

Thanks for all your and best regards.

-- 
Josu Lazkano


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