Using Nuke is a little overwhelming at first, but in this video, I cover getting a mask to disk, using the Rotobot_InstanceSegmentation node, followed by Shuffle and then Write. This has been calculated for a sequence in advance of this video, but one frame is calculated live. The mask is then brought back in via a Read node, the alpha channel is then inverted using an Invert Node, to allow a Multiply Node to change the colour of the background.
Deep Learning Tools for Visual Effects
