I can confirm the observation in comment #7. This means that the problem is not in ffmpeg, since both ffplay and mplayer when using ffaac play back that file properly.
However when using mplayer with libfaad, playback is distorted. Therefore, I'm reassigning to the correct package. The decoding library which gstreamer and gstreamer based applications cannot be controlled in the ffmpeg package, but must be done in the respective media players. Note that mplayer itself defaults to libfaad, since in most cases, it does a better job. ** Package changed: ffmpeg (Ubuntu) => faad2 (Ubuntu) -- Severe sound problem playing some aac files https://bugs.launchpad.net/bugs/575798 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs