ffmpeg -i video.flv -ab 56 -ar 22050 -b 500 -s 320x240 test.AVI
ffmpeg -i my_video.avi -target dvd -aspect 16:9 -sameq my_dvd_video.mpg
ffmpeg -i video.flv -target dvd -aspect 16:9 -sameq DVD_VIDEO.mpeg