Changing the format of a video
Even after you have added a movie to a 3D production, you can change its format. This may be necessary if you weren’t sure of a movie’s format when you added it or if you made a mistake when selecting the format in the first place.
To change a movie’s format:
n In the Production Editor, right-click the movie and select 3D Format Correction from the shortcut menu. Select a new format, and click OK.
or
n While preparing to export a clip (Output > Export as), change the format on the Make Movie dialog box.
See also: