[Ffmpeg-devel] timestamp of a decoded frame?

Eric Fernandez egf05
Mon Jun 12 15:25:13 CEST 2006

Michel Bardiaux wrote:
> Eric Fernandez wrote:
>> Hi,
>> I use avcodec_decode_video() in my program to decode each frame of an
>>  MPEG file. How can I determine the timestamp of the decoded frame? I
>>  tried to find a way in the documentation and examples, but was 
>> unsuccessful.
>> Many thanks, Eric
> Look in the archives for a thread with subject "[Ffmpeg-devel]
> Timestamps on Decoding". It gives the easy rule "When you input a 
> frame with DTS "t", a frame with PTS "t" will come out of the 
> decoder". Plus lots of hints and code samples.
> What the field 'pts' in AVFrame is for is indeed puzzling. As well as 
> why the API does NOT give pts and dts to avcodec_decode_video, leaving 
> to it all the necessary logic...
Thanks a lot Michel, I just found the thread and will try to find a way 
to calculate the pts.


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