Ubuntu AMR playback fix

If you're running Ubuntu like me you may have found that videos you've taken on your mobile don't play with audio when you've copied them to your PC. This is because AMR audio codec support isn't included in Ubuntu, or part of their universe and multiverse extension repositories. However, AMR is in debian-multimedia.org, so follow the guide on adding it to your sources.lst, and then install "ffmpeg". you can then play your videos by:

ffplay video.3gp

It's not great, but it does work.

Installing libavcodec* from debian-multimedia doesn't get it working in VLC or the updated mplayer though (I presume mplayer wasn't compiled with external AMR codec support enabled).

It's common multimedia support which is really needed in Ubuntu, this is the sort of thing everyone wants working out of the box! The alteriative is to follow one of the compile guides.