[mythtv] RE:DVB Audio Sync Issues

John Knottenbelt jak97 at doc.ic.ac.uk
Mon Sep 1 11:30:07 EDT 2003


I get exactly these results too. 
Cheers
John

On Monday 01 September 2003 8:48 am, Linda Crawford wrote:
> Thanks for the earlier help Kenneth,
>
> I haven't managed to get dvbstream to work yet, the latest version is
> looking for sec.h and that isn't in the kernel or LinuxTV drivers?
>
> Mainly, the DVB-T audio video/sync problem seems to be that:
>
> 1. Channel 5 (a QAM64 channel FEC 1/2) channel seems to resync. I get a
> silence period every so often (4-5 minutes) and the audio resyncs. Seems
> watchable apart from the odd 1/2 a second silence where the audio
> resyncs.
>
> 2. BBC (QAM16 FEC 3_4) channels always go out of sync (audio always runs
> behind the picture). On the console I see (not sure if it all correct as
> I'm not sure I got it all when I copied it):
>
>
> Changing from None to WatchingLiveTV
> 2003-08-31 21:17:05 Delaying to next trigger: 332046
> 2003-08-31 21:17:05 Delaying to next trigger: 284317
> 2003-08-31 21:17:05 Delaying to next trigger: 224218
> ac-tex damaged at 0 33
> mb incr damaged
> ac-tex damaged at 10 17
> ac-tex damaged at 0 16
> ac-tex damaged at 27 17
> ac-tex damaged at 8 19
> ac-tex damaged at 14 19
> ac-tex damaged at 1 20
> ac-tex damaged at 4 21
> ac-tex damaged at 43 23
> invalid mb type in P Frame at 10 23
> invalid mb type in P Frame at 23 24
> ac-tex damaged at 39 25
> invalid cbp at 38 27
> ac-tex damaged at 21 27
> ac-tex damaged at 16 28
> ac-tex damaged at 0 31
> mb incr damaged
> ac-tex damaged at 12 31
> invalid cbp at 38 32
> ac-tex damaged at 4 33
> ac-tex damaged at 10 35
> mb incr damaged
> concealing errors
> Warning MVs not available
> slice missmatch
> ac-tex damaged at 1 16
> invalid mb type in B Frame at 4 17
> slice missmatch
> slice missmatch
> slice missmatch
> invalid mb type in B Frame at 1 21
> ac-tex damaged at 12 22
> mb incr damaged
> invalid cbp at 5 24
>
> Any help would be great!
>
> Thanks,
>
> Ian



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