On Mon, Jul 8, 2013 at 1:20 PM, Leonid Mokruschin <[email protected]> wrote: > Hi Vahid: > > > > perhaps you need to take into account pStream->codec.time_base and > pStream->codec.ticks_per_frame. I believe that pStream->time_base matches to > frame rate for interleaved video streams, whereas pStream->codec.time_base > matches to field rate. E.g. for 25fps interleaved stream you will get > time_base=1/25 but codec.time_base=1/50 and codec.ticks_per_frame==2.
No, there are cases where it is this way but there are many where the stream time base is not the inverse of the frame rate. If your code needs to deal with more or less arbitrary input files, this will not work. Vahid, the best IMHO would be if you documented cases where the formula above did not work and maybe add the output of ffprobe -i <input file> -show_format -show_streams and then maybe the first few frames/packets of ffprobe -i <input file> -show_packets -show_frames (best only include video by using -select_streams 0, if video is stream 0 in your case). That should give people here a better chance to see if something is wrong with the values or if you are could do something better. Maybe you have to resort to some sort of heuristics based on statistics you put together. _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
