[Ffmpeg-devel] [Fwd: Is AVFrame->pts really set by libavcodec when decoding?]

Luca Abeni lucabe72
Wed Apr 18 14:51:03 CEST 2007

Hi Michael,

thanks for the reply.
Michael Niedermayer wrote:
>> But a simple test [*] showed that such field is not touched by
>> libavcodec, or is set to 0 (depending on the codec), at least when
>> decoding mpeg1/2 and raw video.
>> Is this a bug in libavcodec, a bug in the documentation, or something else?
> AVFrame.pts is set to the pts which is stored in the stream, if the stream
> does not store any PTS AVFrame.pts should be AV_NOPTS_VALUE
Ok, so there seems to be a bug both in mpeg1/2 and raw video handling 
(when decoding mpeg pts is always set to 0, when decoding raw video it 
is not changed).

If I find the time, I'll try to prepare a patch for this. Where should 
the timestamp be set? (in the decoder, in the generic - util.c - code, 
in the parser, or...?)


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