FFMPEG - mkv to mp4 playback issues

[emerysteele]

I recently compiled ffmpeg on OS X and I converted some mkv files to mp4 with:

ffmpeg -i INPUT.mkv -vcodec copy -acodec libfaac -ab 384k -ac 6 -ar 48000 OUTPUT.mp4

But I am having issues with playback. When I view the video on iOS the video stutters every ~5 mins for ~10 seconds and the video completely freezes when the video is 98% done (a 21:30 long video will freeze at 21:08 and a 59:21 long video will freeze at 58:20) and the audio continues to play.

Also, when I try to skip to a specific point in the video with vlc on my mac, the video freezes and the audio continues to play.

I have also tried the following and it still freezes.

ffmpeg -i INPUT.mkv -vcodec copy -acodec copy OUTPUT.mp4

When I use an older ffmpeg binary it doesn't freeze but it was compiled without libfaac and I can't use aac because for some reason it doesn't keep the surround channels and only keeps L C R.

I don't know what the problem could be.

[emerysteele]

I recompiled ffmpeg using the 0.11.1 snapshot instead of the git repo and this seems to have fixed the issue.