Huh, odd! When I switched to FCP 7 my exports stopped doing what you've described.
For what it's worth I use ProRes 422 and when I export from FCP I export using the same sequence settings. From that master file I then use Quicktime 7 to export a smaller H264 file for download. I don't muck about with trying to export a downloadable version straight from FCP.
The only thing I was going to say about After Effects is that when I used to run into that problem when I used my old version of FCP After Effects was useful as a quick fix that didn't involve going back and reclipping with a different codec or spending hours figuring out what settings where slightly off.
no subject
For what it's worth I use ProRes 422 and when I export from FCP I export using the same sequence settings. From that master file I then use Quicktime 7 to export a smaller H264 file for download. I don't muck about with trying to export a downloadable version straight from FCP.
The only thing I was going to say about After Effects is that when I used to run into that problem when I used my old version of FCP After Effects was useful as a quick fix that didn't involve going back and reclipping with a different codec or spending hours figuring out what settings where slightly off.
Good luck!