On Mon, Jun 22, 2015 at 4:58 PM, Bryan Murphy <[email protected]> wrote:
> I'm running into a problem using ffmpeg to segment files into HLS (m3u8) > format for playback on iOS devices. In the ffmpeg segmented version of > this file, there is a very subtle stutter just as the two adults walk > underneath the 9. This appears to be some kind of single-frame glitch. > > The stutter always happen at HLS segment boundaries. When it happens it > is always visible on iOS devices (play it in Safari on an iPad) and only > sometimes visible in QuickTime on OSX. > > I have never been able to reproduce this glitch using Apple's media file > segmenter and the glitch is not present in the source video. > To follow up on this with more information, ffmpeg 2.7.1 exhibits the same problem. I also did a comparison of frames using ffprobe -show_frames and the 720 frames from input.ts are appear to be properly replicated into the segmented files (270, 270, and 180 frames respectively). I'm at a loss what to do next. There is very clear video corruption being introduced by ffmpeg but I don't know how to diagnose the underlying problem. Thanks, Bryan _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
