On Mar 26, 2012, at 18:58 , Li Zhang wrote: > > Yes, I agree with what you said. But I do not know how to compute the dts > exactly. I just let the muxer add that for me. But I do not know if muxer > did that. > > I tried just now that starting the audio transcoding when the first video > transcoding was succeeded. Then the audio was earlier than video. So, > obviously, the failed video transcoding (50 frames)
keep in mind that when encoding h264 i is normal that you have to encode man frames before you get the first frames back. > > I have another question about the frame rate. I configured video encoder's > AVCodecContext->time_base->den= 25. I think the final video frame rate should > be 25frames per second. But when I check that using VLC, it was 50. I do not > know why. probably you have "ticks per frame"=2 , then 50 / 2 = 25, nothing to worry about. _______________________________________________ Libav-user mailing list Libav-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/libav-user
