Hello!

First of all plz visit this link:
http://www.boonex.com/trac/ray/wiki/GenRayTShooter#IgetUploadingfileerrorwhenuploadingaudiovideofilesinRayMediaandVideoPlayers

There were described main reasons of upload errors in video player.

Also may be you use another OS like Free Bsd which has own ffmpeg.

Regards