Overlays a video over video.
It must be a .AVI video file.
This filter lets you add video overlaid on your clip. It usually makes sense if you have an animated logo, or a transparent bumper at the start of you video.
Sets the video file to be used as layer. Currently only AVI's are supported. Supports variables.
Sets transparency level ranging from 0 to 257.
If you enable this option the video will be played in a loop throughout the entire clip.