Control brightness of the video. Enter a value between -1 and 1, where -1 is minimum brightness and 1 is maximum brightness. 0 is no change. The default is 0.
Control black and white contrast of the video. Enter a value between -1 and 1, where -1 is minimum contrast and 1 is maximum contrast. 0 is no change. The default is 0.
Control color saturation of the video. Enter a value between -1 and 1, where -1 is fully desaturated and 1 is maximum saturation. 0 is no change. The default is 0.