[mythtv-users] audio stuttering issues

[Gerald Brandt]

Hi,

In the last few months, I've been getting audio stuttering issues on my 
frontend.  I upgraded from .26 to .27 a few days ago, and the problem 
remains.

Feb 25 18:26:24 frontend-lr mythfrontend.real: mythfrontend[2076]: I 
CoreContext avformatdecoder.cpp:2378 (OpenAVCodec) AFD: Opened codec 
0x133a6000, id(H264) type(Video)
Feb 25 18:26:24 frontend-lr mythfrontend.real: mythfrontend[2076]: I 
CoreContext audio/audiooutputbase.cpp:792 (Reconfigure) AOBase: Opening 
audio device 'hw:CARD=SB,DEV=0' ch 2(6) sr 48000 sf signed 32 bit reenc 0
Feb 25 18:26:24 frontend-lr mythfrontend.real: mythfrontend[2076]: E 
CoreContext audio/audiooutputalsa.cpp:783 (SetParameters) ALSA: 
Requested 500000us got 170666 buffer time
Feb 25 18:26:24 frontend-lr mythfrontend.real: mythfrontend[2076]: E 
CoreContext audio/audiooutputalsa.cpp:242 (IncPreallocBufferSize) ALSA: 
Try to manually increase audio buffer with: echo 192 | sudo tee 
/proc/asound/card0/pcm0p/s
Feb 25 18:26:25 frontend-lr mythfrontend.real: mythfrontend[2076]: I 
CoreContext mythpainter_ogl.cpp:62 (ClearCache) Clearing OpenGL painter 
cache.
Feb 25 18:26:25 frontend-lr mythfrontend.real: mythfrontend[2076]: I 
CoreContext DisplayRes.cpp:162 (SwitchToVideo) Using 1920x1080 59.939 Hz
Feb 25 18:26:25 frontend-lr mythfrontend.real: mythfrontend[2076]: I 
CoreContext mythrender_vdpau.cpp:1689 (CreatePresentationSurfaces) 
VDPAU: Created 2 output surfaces.
Feb 25 18:26:25 frontend-lr mythfrontend.real: mythfrontend[2076]: I 
CoreContext mythrender_vdpau.cpp:411 (Create) VDPAU: Created VDPAU 
render device 1920x1080
Feb 25 18:26:25 frontend-lr mythfrontend.real: mythfrontend[2076]: N 
CoreContext mythplayer.cpp:523 (CheckExtraAudioDecode) Player(2): 
Forcing decode extra audio option on (Video method requires it).
Feb 25 18:26:25 frontend-lr mythfrontend.real: mythfrontend[2076]: I 
Decoder videoout_vdpau.cpp:631 (DrawSlice) VidOutVDPAU: Added 2 new 
buffers. New buffer size 16 (4 decode and 12 process)
Feb 25 18:26:26 frontend-lr mythfrontend.real: mythfrontend[2076]: I 
CoreContext mythplayer.cpp:1780 (InitAVSync) Player(2): Video timing 
method: USleep with busy wait
Feb 25 18:26:26 frontend-lr mythfrontend.real: mythfrontend[2076]: I 
CoreContext tv_play.cpp:5595 (StartPlayer) TV: Created player.
Feb 25 18:26:26 frontend-lr mythfrontend.real: mythfrontend[2076]: I 
CoreContext tv_play.cpp:2459 (HandleStateChange) TV: Changing from None 
to WatchingPreRecorded
Feb 25 18:26:26 frontend-lr mythfrontend.real: mythfrontend[2076]: I 
CoreContext tv_play.cpp:2550 (HandleStateChange) TV: Main UI disabled.
Feb 25 18:26:26 frontend-lr mythfrontend.real: mythfrontend[2076]: I 
CoreContext tv_play.cpp:411 (StartTV) TV: Entering main playback loop.
Feb 25 18:26:26 frontend-lr mythfrontend.real: mythfrontend[2076]: I 
CoreContext mythrender_vdpau.cpp:597 (CheckOutputSurfaces) VDPAU: Added 
2 output surfaces (total 4, max 4)
Feb 25 18:26:46 frontend-lr mythfrontend.real: mythfrontend[2076]: W 
Decoder avformatdecoder.cpp:4643 (GetFrame) AFD: Audio 134690 ms behind 
video but already 220 video frames queued. AV-Sync might be broken.
Feb 25 18:26:47 frontend-lr mythfrontend.real: mythfrontend[2076]: W 
Decoder avformatdecoder.cpp:4643 (GetFrame) AFD: Audio 134691 ms behind 
video but already 220 video frames queued. AV-Sync might be broken.
Feb 25 18:26:47 frontend-lr mythfrontend.real: mythfrontend[2076]: W 
Decoder avformatdecoder.cpp:4643 (GetFrame) AFD: Audio 134692 ms behind 
video but already 220 video frames queued. AV-Sync might be broken.
Feb 25 18:26:47 frontend-lr mythfrontend.real: mythfrontend[2076]: W 
Decoder avformatdecoder.cpp:4643 (GetFrame) AFD: Audio 134694 ms behind 
video but already 220 video frames queued. AV-Sync might be broken.
Feb 25 18:29:31 frontend-lr mythfrontend.real: mythfrontend[2076]: I 
CoreContext tv_play.cpp:9471 (customEvent) TV: ASK_RECORDING 1 29 0 0 
hasrec: 0 haslater: 0
Feb 25 18:29:31 frontend-lr mythfrontend.real: mythfrontend[2076]: I 
CoreContext tv_play.cpp:9471 (customEvent) TV: ASK_RECORDING 1 29 0 0 
hasrec: 0 haslater: 0
Feb 25 18:30:44 frontend-lr mythfrontend.real: mythfrontend[2076]: W 
Decoder avformatdecoder.cpp:4643 (GetFrame) AFD: Audio 232788 ms behind 
video but already 220 video frames queued. AV-Sync might be broken.
Feb 25 18:30:44 frontend-lr mythfrontend.real: mythfrontend[2076]: W 
Decoder avformatdecoder.cpp:4643 (GetFrame) AFD: Audio 232789 ms behind 
video but already 220 video frames queued. AV-Sync might be broken.
Feb 25 18:30:44 frontend-lr mythfrontend.real: mythfrontend[2076]: W 
Decoder avformatdecoder.cpp:4643 (GetFrame) AFD: Audio 232790 ms behind 
video but already 220 video frames queued. AV-Sync might be broken.
Feb 25 18:30:44 frontend-lr mythfrontend.real: mythfrontend[2076]: W 
Decoder avformatdecoder.cpp:4643 (GetFrame) AFD: Audio 232792 ms behind 
video but already 220 video frames queued. AV-Sync might be broken.
Feb 25 18:30:49 frontend-lr mythfrontend.real: mythfrontend[2076]: W 
Decoder avformatdecoder.cpp:4643 (GetFrame) AFD: Audio 1223 ms behind 
video but already 220 video frames queued. AV-Sync might be broken.
Feb 25 18:30:49 frontend-lr mythfrontend.real: mythfrontend[2076]: W 
Decoder avformatdecoder.cpp:4643 (GetFrame) AFD: Audio 1224 ms behind 
video but already 220 video frames queued. AV-Sync might be broken.
Feb 25 18:30:49 frontend-lr mythfrontend.real: mythfrontend[2076]: W 
Decoder avformatdecoder.cpp:4643 (GetFrame) AFD: Audio 1226 ms behind 
video but already 220 video frames queued. AV-Sync might be broken.


I've had this particular frontend for a couple of years.  Any ideas?

Gerald


-- 
Gerald Brandt
Majentis Technologies
gbr at majentis.com
204-229-6595
www.majentis.com