Dynamically premultiply or unpremultiply the input video stream as needed, to match the requirements of the downstream filter graph. This is roughly equivalent to either premultiply:inplace=yes or unpremultiply:inplace=yes, or otherwise a noop.

The filter accepts the following option:

planes

Set which planes will be processed, unprocessed planes will be copied. By default value 0xf, all planes will be processed.