Just noticied that ffmpeg is deprecated on ubuntu 12.04. It will be replaced by avconv in upcoming releases. avconv seems to be a fork of ffmpeg but curently using the same command line interface. Is it possible to give the choice between ffmpeg and avconv ?
Thanks for noticing. Seeing as (per this StackOverflow answer), there is no technical reason for Ubuntu to be using libav, and that pre-built FFmpeg packages are still available for Ubuntu users, I see no reason to provide such an option.