[mythtv] RE: New version of windows filters (was: MythwebandWindows Media Player over Samba)

[bobnvic at everestkc.net]

Torbjörn Jansson wrote:
> >>> However, the sound was slightly off and would become several
> >>> seconds delayed after seeking.  I use a PVR-250 to record,
> >>> then transcode to MPEG-4, and I had not edited the recording.
> >>> I watched an MPEG-2 recording that hadn't finished transcoding
> >>> and the sound was in sync both before and after seeking, however
> >>> the player did crash on me a couple of times when seeking.
> >> 
> >> The file you had a/v sync problems was a mpeg4/rtjpeg (nupplevideo
> >> type)file right?
> > 
> > Yes, it was mpeg4 nuv transcoded from mpeg2 in mythtv, no cuts.
> > 
> 
> The a/v sync appeard only after you did a seek right? And if you 
> played it
> normaly without seeking it stayed in sync?

No, the sound was out of sync from the beginning, however it was
only a fraction of a second, but still very noticable.  After the
seek, there was silence for several seconds (5-15) then the sound
started at the original seek point (delayed by 5-15 seconds behind
the video).

> The reason I as is that it coud have happened in two different 
> parts of the code.
> During playback there is code that checks that the timestamps 
> doesn't make
> big jumps, if it does it makes some adjustments.
> The other one is when doing seeks, it adjusts timestamps so they 
> begin at
> zero after a seek, problem is that it's done independently on 
> video and audio.
> 
> I'll do some testing.

Thanks,
Bob C