I am trying to compress a clip I made in imovie to an avi or some other format. I saved the file in imovie as a dependent QT .mov. then when I try ffmpeg, I get this error message:

MEncoder dev-CVS-030226-15:00-3.1 (C) 2000-2003 Arpad Gereoffy (see DOCS)

AltiVec found
Reading /Users/johnd/.mplayer/codecs.conf: can't open '/Users/johnd/.mplayer/codecs.conf': No such file or directory
Reading /usr/local/etc/mplayer/codecs.conf: this codecs.conf is too old, incompatible with this mplayer release! at line 6
Using built-in default codecs.conf
File not found: 'frameno.avi'
Reading config file /Users/johnd/.mplayer/mencoder: No such file or directory
success: format: 0 data: 0x0 - 0x714E6
MOV: missing data (mdat) chunk! Maybe broken file...
MOV: missing data (mdat) chunk! Maybe broken file...



I have the latest version of mplayer, why is it not recognizing it?