What I found out was that ffmpeg from default repos doesn't have amr encodec in it, but by installing it form medibuntu you get the amr support and audio works. But as you already knew, in some countries this might be illegal. Hate those licensing issues..
-- cannot play audio on .3gp movies https://bugs.launchpad.net/bugs/125835 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