[mythtv-users] Audio/Video sync issues

Bob mythtv at cox.net
Mon Feb 11 04:38:01 UTC 2019

All of a sudden my FE/BE system has an audio/video sync issues. I 
haven't changed anything. I'm using an NVidia 710 card with an HDMI 
connection to a home theater receiver with VDPAU decoding.

As I watch a recording, it appears the audio gets farther and farther 
behind so adjusting the delay doesn't help for long.

I have a another frontend that can play the same recordings without 
issue (via LAN).

2019-02-10T09:38:40.835507-07:00 mythfrontend[3322]: C thread_unknown 
mythcommandlineparser.cpp:2619 (ConfigureLogging) mythfrontend version: 
fixes/29 [v29.1-38-gb9c5f8b2ff] www.mythtv.org
2019-02-10T09:39:13.189410-07:00 mythfrontend[3322]: N CoreContext 
audioplayer.cpp:167 (ReinitAudio) AudioPlayer: Enabling Audio
2019-02-10T09:39:13.590746-07:00 mythfrontend[3322]: I CoreContext 
audio/audiooutputbase.cpp:823 (Reconfigure) AOBase: Opening audio device 
'hdmi:CARD=NVidia,DEV=1' ch 6(6) sr 48000 sf signed 32 bit reenc 0
2019-02-10T09:39:14.191448-07:00 mythfrontend[3322]: E CoreContext 
audio/audiooutputalsa.cpp:915 (OpenMixer) ALSA: failed to register mixer 
device /dev/mixer: No such file or directory
2019-02-10T09:39:14.191606-07:00 mythfrontend[3322]: E CoreContext 
audio/audiooutputalsa.cpp:498 (OpenDevice) ALSA: Unable to open audio 
mixer. Volume control disabled
2019-02-10T09:39:14.292337-07:00 mythfrontend[3322]: N CoreContext 
mythplayer.cpp:532 (CheckExtraAudioDecode) Player(0): Forcing decode 
extra audio option on (Video method requires it).
2019-02-10T09:39:14.393024-07:00 mythfrontend[3322]: E CoreContext 
mythplayer.cpp:2493 (VideoStart) Player(0): Video sync method can't 
support double framerate (refresh rate too low for 2x deint)
2019-02-10T09:39:14.393135-07:00 mythfrontend[3322]: I CoreContext 
mythplayer.cpp:1832 (InitAVSync) Player(0): Video timing method: USleep 
with busy wait
2019-02-10T09:39:14.393306-07:00 mythfrontend[3322]: I CoreContext 
tv_play.cpp:5864 (StartPlayer) TV::StartPlayer(): Created player.

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