This description indicates an upstream issue. For that, we'd really need the test.mp4 file.
See http://libav.org/bugreports.html for detailed information what is necessary information. ** Changed in: libav (Ubuntu) Importance: Undecided => Low ** Changed in: libav (Ubuntu) Status: New => Incomplete ** Also affects: libav Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/945482 Title: Loud hiss on audio converting mp4 to mpg with avconv or ffmpeg To manage notifications about this bug go to: https://bugs.launchpad.net/libav/+bug/945482/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
