RaceRender enables you to create videos that make use of picture-in-picture overlays, split-screens, camera switching, transparencies, and many other options. Unlike common video editing software, RaceRender is a video processor that is designed to easily and efficiently mix multiple concurrent video and audio sources. It was originally created to produce fast-paced motorsports video from multiple cameras, without requiring expensive video processing hardware, and has since evolved to become useful for a wide variety of other purposes as well.