Cleaning up prerendered video files

From the Tools menu, choose Clean Up Prerendered Video to delete the temporary files created as a result of using the Selectively Prerender Video command. »For further information: Selectively prerender video

Use the Clean Up Prerendered Video dialog to specify which prerendered files should be deleted: you can remove only inactive files (files for media that is no longer used on the timeline), all prerendered files, or all prerendered files within a time selection.