[vdr] Re: Proposal: cutting out advertising automatically

[Steffen Koch <Steffen.Koch@sphinx-electronics.de>]

Matthias Schniedermeyer wrote:
>>This is IMHO no problem. You could use the PTS for that.
> Just remember the marginstart.
> The bigger problem here is the time. Not all VDR-machines have the same
> time, so the recording start can vary everywhere from nothing to a few
> seconds to some minutes. You could make "md5sum"s of some I-Frames to
> find corrosponding I-Frames on both sides. This way you get the
> clock-difference between the two systems. (I-Frame XY is at offset 512
> on Machine A and at offset 656 on Machine B. So the clock-difference ist
> 656-512 = 144 frames = 5.76 seconds)

AFAIR PTS is not changed during recording. So all recordings from 20.15 
no matter when they begun should have the same timestamp for the same frame.



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