[vdr] Re: vdr cuts recordings with ugly artifacts at cutting-points

[Jörg Knitter <joerg.knitter@gmx.de>]

Stefan Huelswitt wrote:

> But audio is a different thing. VDR cuts based on I-frames and
> doesn't take care of PTS. As usually video is early comparing to
> audio, a end-cut-mark cuts away some audio packets which actualy
> belong to the sequence (IMHO).

For avoiding this, DS.JAR had some kind of sync option. Using Windows,
it worked like this:
You recorded a movie in PVA format (optionally with an additionally
raw-ac3 file) and then extracted a raw-mp2 out of the uncut PVA file.
The PVA and the raw files include PTS information.
Then you cut the PVA file with tools like PVACut and loaded this file
and the raw file(s) into DS.JAR. When you now pressed 'go', DS.JAR
synced the cut PVA file and the raw files with the help of their PTS
information, so no empty MP2 (or) AC3 frames had to be inserted to fill
the stream. You finally got an M2V, MPA and AC3 file ready for DVD
authoring.

PVAStrumento would have to do the same: First take the (uncut) VDR
file(s) and extract the embedded MP2- and AC3 streams with PTS
information. Then load the mark-file and cut the video-, MP2- and
AC3-streams according to their PTS.

Jörg



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