Use alternative encoders rather than ffmpeg.
Use alternative encoders rather than ffmpeg.

svn path=/trunk/; revision=670

jku/rygel,luisbg/rygel,jku/rygel,GNOME/rygel,Pelagicore/Media-Manager-Rygel-patched,Tarnyko/rygel,GNOME/rygel,GNOME/rygel,Pelagicore/Media-Manager-Rygel-patched,Tarnyko/rygel,Pelagicore/Media-Manager-Rygel-patched