QT "export sound to aiff" not working

[Keytachi]

For some reason whenever i export some movie in quicktime to an audio file, the final result is silence... Deafening silence... Any ideas why this can be happening?
thanks

 

[spinnerlys]

What kind of movie? Action, Romance, Dramedy?

Actually what kind of file are you trying to export from?

A .mov, an .avi, an .mp4?

Is the audio audible during playback via QT?

And what codec is used for the original audio (Cmd + I)?

 

[Keytachi]

any movie,
any movie type,
its audible,
the latest one is "Generic MPEG-4, 640 x 352, Millions
MPEG Layer 3, Stereo, 48.000 kHz"