[Ffmpeg-devel] Re: [PATCH] seeking in GXF

Baptiste Coudurier baptiste.coudurier
Tue Aug 1 23:13:56 CEST 2006


Reimar D?ffinger wrote:
> Hello,
> On Tue, Aug 01, 2006 at 12:46:24PM +0200, Baptiste Coudurier wrote:
>> Nice, I still have problems with my DV samples which are detected as
>> twice fps though :/
> Well, the gxf demuxer does not set frame rate, only the time base (for
> correct interpretation of the timestamps). It expects the codec to set
> the frame rate. If DV does not contain the frame rate that would need
> to be changed, if it does, it would be a bug in the DV decoder. Or did
> I misunderstand your problem? Can you make one such sample available to
> me (or even better to the samples repository *g*)?

Demuxer must set time rate if it knows it and GXF specifies it. Some
codecs can't set the frame (MJPEG for example) cause it simply does not
have this information.

You can produce samples with DV with ffmpeg GXF muxer, they should be

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