[Freeswitch-users] Video playback in 1.7

the newest 1.7 freeswitch successfully played an .mp4 file with "playback" application, and the picture was sent to an VP8 client (linphone on Android). The playback took about 20% CPU usage on a Xeon core -- probably because of resising work. The source file was taken from http://www.quirksmode.org/html5/tests/video.html Question: what other file formats are supported? I tried .ogv and .webm, but I got "Invalid file format" error. thanks