You'll find the complete backtrace at http://pastebin.com/xDsdAV06
The files are seen with ffprobe has
major_brand : f4v
minor_version : 0
compatible_brands: isommp42m4v
Duration: 00:00:11.63, start: 0.000000, bitrate: 10420 kb/s
Stream #0.0(eng): Video: h264, yuv420p, 1280x720 [PAR 1:1 DAR
16:9], 10122 kb/s, 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc
Stream #0.1(eng): Audio: aac, 44100 Hz, stereo, s16, 320 kb/s
Stream #0.2(eng): Data: amf0 / 0x30666D61, 0 kb/s
Unsupported codec (id=0) for input stream 2
Is it a bug or file format that is unsupported ?
Thanks
Joris