Thank you for reporting this bug, and trying to help make Ubuntu better. However, this is not a bug - the units of all the bitrate parameters have changed from kbit/s to bits/sec. Thus, your first command line is asking for an audio bitrate of 384 bits per second, or approximately 0 kb/s, which is what ffmpeg gave you. What you obviously meant was "-ab 384000" or "-ab 384k".
** Changed in: ffmpeg (Ubuntu) Status: New => Invalid -- ffmpeg in gutsy does not recognize the -ab option https://bugs.launchpad.net/bugs/133931 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs