<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><div>> Running Mythbuntu 9.04 with mythtv.22 using the mythbuntu autobuilds. <br>> Lately, (last week) I have been getting audio/video sync errors. The <br>> video will play ahead of the audio, then slow down, then speed up <br>> again. It never seems to be in sync. This happens on recorded <br>> programs or live tv. BUT not all recorded programs or all live tv <br>> broadcast.<br>> The audio sounds normal and stable.<br>> I have 3 separate front ends and they all exhibit the same issue. I <br>> have one main backend. All the front ends use nvida cards, but not vdpau.<br>> I cannot say for sure but it appears to only happen on channels that <br>> broadcast in 1080i or 480i, but I cant be completely sure of that.<br>> I have tried several
different playback profiles and nothing solves it.<br>> ifconfig shows no network errors.<br>> The backend uses two ati hdtv wonder cards and a hdhomerun dual tuner.<br>><br>> One other thing I should mention. I get all my signal over the air <br>> and it is not always stable. I get alot of errors.<br>><br>> 2009-12-22 22:24:06.691 [mpeg2video @ 0x7facf5ab1820]ac-tex damaged at <br>> 41 9<br>> 2009-12-22 22:24:06.691 [mpeg2video @ 0x7facf5ab1820]mb incr damaged<br>> 2009-12-22 22:24:06.691 [mpeg2video @ 0x7facf5ab1820]mb incr damaged<br>> 2009-12-22 22:24:06.698 [mpeg2video @ 0x7facf5ab1820]Warning MVs not <br>> available<br>> 2009-12-22 22:30:28.262 [ac3 @ 0x7facf5ab1820]frame CRC mismatch<br>> 2009-12-22 22:30:28.293 [ac3 @ 0x7facf5ab1820]incomplete frame<br>> 2009-12-22 22:30:28.293 [ac3 @ 0x7facf5ab1820]invalid frame size<br>> 2009-12-22 22:30:28.945 [mpeg2video @ 0x7facf5ab1820]Warning MVs
not <br>> available<br>> 2009-12-22 22:35:43.431 [ac3 @ 0x7facf5ab1820]frame CRC mismatch<br>> 2009-12-22 22:35:43.461 [ac3 @ 0x7facf5ab1820]incomplete frame<br>> 2009-12-22 22:35:43.461 [ac3 @ 0x7facf5ab1820]invalid frame size<br>> 2009-12-22 22:35:43.949 [mpeg2video @ 0x7facf5ab1820]invalid mb type <br>> in B Frame$<br>><br>> Only thing is, I have been using the same setup for over six months, <br>> and this sync error just started happening. That leads me to believe <br>> that the poor signal is not the problem.<br>> Any help as this is very annoying.<br><br> <br>Are you using Pluse Audio? When I was using it I had latency problems <br>and the audio would go out of sync....If you are using it try removing <br>it and see if your sync problems get any better..<br><br>No, pulse audio is not installed.<br>I think this has something to do with the poor signal I get ota.<br>When I watch live tv, and the signal
is poor, sometimes the audio will crack and the picture will get blocky but stays in sync<br>But then on another channel, I will see slight picture errors (blocky image) but not very bad. But this channel will have the sync errors but the audio does not crack. <br>I wonder if mythtv has changed the handling of video/audio in the last few updates??<br>I guess I could roll back one system and see???? <br></div>
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