[Ffmpeg-devel] compute_frame_duration and pkt->duration

[Baptiste Coudurier]

Baptiste Coudurier wrote:
> Hi
> 
> Here is the problem I experience:
> 
> gxfenc.c av_set_pts_info to 1/50 because gxf dts are field based, while
> codec timebase is 1/25. When computing frame duration, it first takes
> stream timebase, and it will compute frame duration as 1, and timebase
> as 1/50.
> 
> With delay, that will cause first dts to be -1 in stream timebase.
> dts in gxfenc.c: -1,0,2,4,6,8,10 ..... to be right, first dts should be -2.
> 
> Maybe Im wrong or compute_frame_duration should only take codec timebase
> into account and then compute_pkt_fields2 will rescale according to
> stream timebase.
> 
> What would be correct behaviour ?
> 

Ping ? Has somebody an idea about that ? Michael ?

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