[linux-dvb] Re: Cutting

[Klaus Schmidinger <Klaus.Schmidinger@cadsoft.de>]

Daniel Schneider wrote:
> 
> >If you want to connect two clips with reencoded starts/ends you have a
> >problem, because the GOP-sequence is not circular and you get a "jitter
> >effect" at the editpoint.
> 
> Can't this jitter effect be avoided? Isn't this the goal of the not closed
> GOP-mode (but I think for DVD authoring you need closed GOP).
> 
> Wouldn't it be possible to reencode the (B/P) frames in the cut GOP as
> I-Frames to avoid the jitter effect at the editpoint (for example:
> IBPBBPBBPBBP IBPBBPBBPBBP IIIII IBPBBPBBPBBP IBPBBPBBPBBP).

That would have been my first idea, too.
However, I haven't yet found any code that converts a GOP into
all I-frames. If we were able to perform that conversion, I believe
doing the cutting the way you described shouldn't be a problem.

Klaus
-- 
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Klaus Schmidinger                       Phone: +49-8635-6989-10
CadSoft Computer GmbH                   Fax:   +49-8635-6989-40
Hofmark 2                               Email:   kls@cadsoft.de
D-84568 Pleiskirchen, Germany           URL:     www.cadsoft.de
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