H.264 plays, but does not export

I have a QT movie in H.264 format which plays just fine in QT Player, however, I want to brighten it up a bit (gamma).
When I try to export from QT Player to some other format (Photo-Jpeg etc), only the audio gets saved.
Also, when using Cleaner Pro, I can to the settings, preview, brighten sharpen etc, and it all looks good. But only the audio ends up being saved.
Has anyone seen this?
Thanks
William

Hi Don,
If it is not a protected movie:
Go to system profiler. Does your graphics card support Core Image? the size of the movie is quite small but if the GC does not support core image you will get a result like this. You shouldn't even have a brightness choice in the AV controls if it is unsupported but-..
About this Mac > More Info... > Core Image: Should say "Hardware Accelerated" and Quartz Extreme should be "Supported". The lack of either one of these will produce this result.
Sweet Polly

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