[mythtv] A/V Sync Issue
mwilley at msdpt.k12.in.us
Sun Dec 4 15:23:56 UTC 2005
Hello... I posted this originally on the users list, but I have much more info now so I thought it might be appropriate here.
I cannot get HDTV to playback in sync. SD is fine, but HD will not work. It is looking like this is related to the AV-710 sound card I have. Here are the symptoms:
If I set alsa to a rate of 44100 video looks just about right, but the audio is slow and the whole thing continually falls behind live programming.
If I set alsa to a rate of 48000 audio is perfect, but the video constantly holds. The verbose log shows A/V diverged by 3.XX frames... This is a consistent issue once it starts streaming.
I am using AC3 passthrough with the standard decoder. This is the case with both 18.1 and the newest SVN yesterday. My CPU never goes over about 60%. It is definetly appearing that it is an issue with playback involving audio. BTW, multi-track rate locking does not seem to make a difference either way. Does anyone have any thoughts on what to try?
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