The project has a blank space - no video, at the very beginning of the project where you may have wanted "black" or blank video. Instead of leaving a space at the beginning of the project, record some black video from your camcorder or VHS tape. For example, you could capture video with the lens cap on your camcorder for black video. Do not leave spaces in the project with no video or still still pictures. If you need to have black video at a point, insert blank or blank video instead of leaving a space.