Re: Exporting qiucktime movie from finalcut 3.o

[Mike Kennell] "I am using quicktime viewer 7.0"

That could be part of the issue. FCP 3 was built to work with quicktime 5. Often using old versions of FCP with newer versions of quicktime can cause issues.

But it could also be related to my first question

Are you playing the video on the same computer that you edited it on? If not that would easily be the issue, you are playing a video made with a codec on a machine that does not have that codec.

There are no "technical solutions" to your "artistic problems".
Don't let technology get in the way of your creativity!