replaces any video on the track.
Loop video: Loop video by specifying the length of the region to
loop.
+Mirror: Mirror horizontal or vertical with the ability to
+ swap left to right or top to bottom. And if enable
+ reflection center checked, can vary X/Y centering.
Mandelbrot: Render a Mandelbrot fractal using Cuda.
Motion: Tracks translation and rotation motion to stabilize
shaky video.