Weird -- any idea why there's only 1 key frame? I guess that's what the camera decided to do...
On Wed, May 9, 2012 at 8:22 AM, Alex Cohn <[email protected]> wrote: > On Mon, Apr 16, 2012 at 7:05 PM, Simon Daniels <[email protected]> > wrote: > > Hi guys, > > > > I have a set of .MTS files that I'm trying to splice. If I start at > 0:00:00, > > the output video works fine. But if I start splicing any time after > 0:00:00, > > the output video is empty. I've used the exact same command line with > other > > .MTS files and had no problem. It seems like something specific to this > > Panasonic Lumix camera. MP4 and MOV files work fine too. > > > > This repros in FFmpeg HEAD-8dfb13e, 0.10.2, and 0.8.3. > > > > Any ideas? Thanks! > > > > Users-MacBook-Pro:ffmpeg-0.10.2 user$ ./ffmpeg -ss 00:00:01 -t 00:00:25 > -i > > 00004.MTS -threads 3 -acodec copy -vcodec copy "output.MTS" > > Your input video stream has only one keyframe, which is the first > frame. For h264, -vcodec copy can only start writing video from a > keyframe. That's why it produces 0 frames in the end. > > BR, > Alex Cohn > _______________________________________________ > Libav-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/libav-user >
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