Convert AMR to AVI

Everything points to the fact that It should be possible to create an AVI multimedia file just from audio source like AMR, which is what amr to avi conversion represents. Just keep in mind that .amr file is just audio track, so unless you import video track as well, the result will be just "black" video with audio track playing. If you want to add the track to existing video, you have to use some video editor instead.