чем посмотреть а лучше переконвертировать ютубовские flv видюхи, все плейры и менкодер говорят
Playing ./Flash8xMYRA.flv.
libavformat file format detected.
[flv @ 0x8804094]Unsupported video codec (7)
[flv @ 0x8804094]Unsupported audio codec (a)
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[flv @ 0x8804094]Unsupported video codec (7)
[flv @ 0x8804094]Unsupported video codec (7)
[flv @ 0x8804094]Could not find codec parameters (Video: 0x0007)
[flv @ 0x8804094]Could not find codec parameters (Audio: 0x000a, 44100 Hz, stereo)
[flv @ 0x8804094]skipping flv packet: type 97, size 7627016, flags 0
[flv @ 0x8804094]skipping flv packet: type 224, size 3465344, flags 0
[flv @ 0x8804094]skipping flv packet: type 245, size 11165518, flags 0
[flv @ 0x8804094]skipping flv packet: type 124, size 16257835, flags 0
[flv @ 0x8804094]skipping flv packet: type 54, size 10541904, flags 0
[flv @ 0x8804094]skipping flv packet: type 158, size 7666145, flags 0
[flv @ 0x8804094]skipping flv packet: type 1, size 11059906, flags 0
[flv @ 0x8804094]skipping flv packet: type 57, size 10396047, flags 0
[flv @ 0x8804094]skipping flv packet: type 37, size 11089580, flags 0
[flv @ 0x8804094]skipping flv packet: type 71, size 6208058, flags 0
[flv @ 0x8804094]skipping flv packet: type 13, size 2604319, flags 0
[flv @ 0x8804094]Unsupported video codec (c)
LAVF_header: av_find_stream_info() failed