[vdr] Re: Cutting problems?

[Wolfgang Fritz <wolfgang.fritz@gmx.net>]

Steffen Koch wrote:
> On Tue, 04 Feb 2003 18:21:47 +0100, Wolfgang Fritz wrote:
>
>
> > I can understand that ds.jar detects the cuts by the jumps in the 
> > timecode, but what I do not understand is that it has to insert audio 
> > frames at the cuts for several hundred milliseconds to maintain A/V sync.
> >
> > If I replay the resulting DVD image file with mplayer, I can notice the 
> > short pauses in the audio at the cuts, but the video distortions are gone.
> >
> > It seems to me as if video and audio are cutted at different times and 
> > some audio is "lost" at the cuts.
> > Has anybody seen these effects too?
> This is correct... Since audio is early (smaller buffer reqd.) around
> 200 - 400 ms and vdr is writing them together and not time corrected to
> the hdd, audio is early too in the file. VDR is then using the video
> pts as reference for cutting.
So times in marks.vdr are correct for the video stream?

> I hope this is understandable ;-))
Yes. But why do I notice distortions in the video and not in the audio? 
I assume the cut is correct for video and mplayer or vdr are getting 
confused by the missing audio frames. I will try to verify this by 
demuxing a vdr recording with ds.jar and replaying the video file alone 
with mplayer.

Wolfgang
>



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