Look at this ww: Input #0, film_cpk, from 'title02.cak': Duration: 00:01:03.47, start: 0.000000, bitrate: 2027 kb/s Stream #0:0: Video: cinepak, rgb24, 352x224, 15 fps, 15 tbr, 600 tbn, 600 tbc Stream #0:1: Audio: adpcm_adx ([1][0][0][0] / 0x0001), 44100 Hz, 2 channels, s16p, 352 kb/s But it's cheap to decode.