[mythtv] audio timecode problem

[Torbjörn Jansson]

I don't know if it's related or not, but there is some timecode wierdness in
mythtv.
A while back there was some discussion about the audio time code sync
packets being wrong for some reason and that caused playback problems.
If i remember correctly the source of the problem was not found and instead
a workaround was developed and this fixed the problem.

Maybe this is related somehow?

When i was developing the windows filters i found that some files have video
timecodes thats realy wierd, they start realy high, then increase for a few
frames, and then reset back to zero and then continue normaly.
I had to develop a workaround for this because windows (actualy directshow)
doesn't like when timecodes jump down, they must always increase.
Note that this problem is only at the begining of the file, the very first
few video frames.
I don't know if this is still a problem or not.


mythtv-dev-bounces at mythtv.org <> wrote:
> I have just found a problem (no solution yet) with a dvbt
> recorded program.
> happens about 40min into the file.
> file is nuv transcoded so mpeg4.
> 
> a partial trace of the interesting bit is
> 
> 2004-12-30 00:07:37.029 _AddSamples bytes=9216, used=161793,
> free=350207, timecode=95443776
> 2004-12-30 00:07:37.059 A/V timecodes audio 95442893 video
> 95442902 frameinterval 40000 avdel 9 avg -5957
> 2004-12-30 00:07:37.093 A/V timecodes audio 95442926 video
> 95442942 frameinterval 40000 avdel 16 avg -2217
> 2004-12-30 00:07:37.096 _AddSamples bytes=13824, used=158721,
> free=353279, timecode=131 2004-12-30 00:07:37.142 A/V timecodes audio
> -717 video 95442982 frameinterval 40000 avdel 95443699 avg 2337
> 
> not sure as Im not up with the idiosyncracies but the
> timecode appears written wrong in the file during recording.
> havent traced it completely yet though.
> only 1 file has it so far.
> will continue on it tomorrow evening. seems to be similar to
> something we saw previously. since it doesnt happen much it will be
> hard to tell where it crept in. any hints that would help would be
> good. 
> cheers
> mark
>