Thank you ! In our example we decided to go with codec_info_nb_frames != 1 in case 2 video streams exist.
Svetlana On Sun, Oct 21, 2012 at 9:18 PM, Michael Bradshaw < [email protected]> wrote: > On Sun, Oct 21, 2012 at 2:24 AM, Svetlana Olonetsky > <[email protected]> wrote: > > Hi, > > > > I am reading video files using ffmpeg in C++. > > I have some videos from users with multiple video streams. > > > > For example, running ffmpeg directly gives stream info: > > Stream #0:0: Video: mjpeg, yuvj420p, 640x480, 90k tbr, 90k tbn, 90k tbc > > Metadata: > > comment : Movie/video screen capture > > Stream #0:1(eng): Audio: wmav2 (a[1][0][0] / 0x0161), 48000 Hz, > stereo, > > s16, 192 kb/s > > Stream #0:2(eng): Video: wmv3 (Main) (WMV3 / 0x33564D57), yuv420p, > > 640x480, 5500 kb/s, 29.97 tbr, 1k tbn, 1k tbc > > > > How can I figure out which video stream is Main ? > > I'm not sure what the most appropriate method is, but I would probably > pick the stream with the longest duration. Stream 0:0 is probably just > a thumbnail/single frame, whereas stream 0:2 is probably an actual > video. Check AVStream.duration (if it's set). > _______________________________________________ > Libav-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/libav-user >
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