Black Stretch: Increase the black level of the video.

White Stretch: Increase the white level (or brightness) of the video.

Red / Green / Blue: Independently adjust the rgb channels of the video.

Alpha: Independently adjust the transparency of the video.

Saturation: Drag this bar to the right to increase colour saturation or drag it to the left to convert colours into black and white (greyscale).

Premultiplied Alpha: Tick this box if the source is using premultiplied alpha which is often the case with MOV and other video formats containing an alpha channel.