A little context on why I need this. I use individual stream durations to validate , if the outputs after transcoding have the same stream durations. For this we need to know the stream durations through a quick parse of the header of the file, since demuxing the whole file is too slow. We can have some video files, for example slide show videos etc. , where audio might be of short duration and video very long, so it is not always the case that video and audio of our input will be of the same duration.
I see that FLV container stores the duration of the whole file, as an optional metadata, http://git.videolan.org/?p=ffmpeg.git;a=blob;f=libavformat/flvenc.c;h=e217ba8a826cc5312adf306725662127414c807f;hb=refs/heads/master#l226 . http://www.adobe.com/content/dam/Adobe/en/devnet/flv/pdfs/video_file_format_spec_v10.pdf - Page 15 . I don't know much about other containers but MP4,MOV,AVI all have specific header items to describe individual stream durations. On Tue, Jul 28, 2015 at 1:38 PM, Hendrik Leppkes <h.lepp...@gmail.com> wrote: > On Tue, Jul 28, 2015 at 9:39 PM, Sasi Inguva <is...@google.com> wrote: > > Signed-off-by: Sasi Inguva <is...@google.com> > > --- > > libavformat/matroska.h | 1 + > > libavformat/matroskadec.c | 21 +++++++++++++- > > libavformat/matroskaenc.c | 66 > ++++++++++++++++++++++++++++++++++++++------ > > tests/fate/wavpack.mak | 4 +-- > > tests/ref/acodec/tta | 4 +-- > > tests/ref/fate/binsub-mksenc | 2 +- > > tests/ref/lavf/mkv | 8 +++--- > > tests/ref/seek/lavf-mkv | 44 ++++++++++++++--------------- > > 8 files changed, 109 insertions(+), 41 deletions(-) > > > > What is this good for? > Is there any precedence for these tags in other muxers or demuxers? > > It seems like a rather unclean solution to whatever your problem is. > > - Hendrik > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel > _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
