Seems that stream 1 comes from film source: 1000.00 (1000/1) -> 30.00 (30/1) Input #0, asf, from '/var/www/localhost/htdocs/razzamatazz-compilation.wmv': Duration: 00:33:53.5, start: 3.000000, bitrate: 1125 kb/s Stream #0.0: Audio: wmav2, 44100 Hz, stereo, 128 kb/s Stream #0.1, 30.00 fps(r): Video: WMVA / 0x41564D57, 640x480 File 'test2.flv' already exists. Overwrite ? [y/N] y Output #0, flv, to 'test2.flv': Stream #0.0, 30.00 fps(c): Video: flv, yuv420p, 640x480, q=2-31, 200 kb/s Stream #0.1: Audio: mp3, 44100 Hz, stereo, 64 kb/s Stream mapping: Stream #0.1 -> #0.0 Stream #0.0 -> #0.1 Unsupported codec (id=0) for input stream #0.1