Here's what I've got so far:
1) make a list of components that have the "canMovieExportFromProcedures" flag set.
2) the user chooses one and hits the edit button
3) open that component, (set the "kQTMovieExporterPropertyID_EnableHighResolutionAudioFeatures" flag)
4) call "MovieExportDoUserDialog".
the only problem is, this dialog allows video. eg: under "3G" you can pick the "video" tab, or under QuickTime, you can check the "Video" checkox, enabling the group.
is there a flag I can set or test for to turn off the availability of video?