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11.3, 11.2, 11.1, 11.0, 10.5 or later
Connect the Src input of the PointCloudKeyer into your foreground footage. (Optional: connect a background plate to composite later)
Create a roto node and hook it into the Shape input
With the View set to ‘Point Cloud’, select a color space that does a decent job separating out the screen color you want to key, Chroma Red/Blue should work for most cases. (Optional: connect the custom input a 2D color space image and set the color space to “Custom” to use your own input)
Adjust the point cloud using the translate and scale knobs, if needed.
Draw a roto shape around the screen color you want to key
Preview your output by changing the view to “composite” or “final result” (Optional: use the “dense point cloud” and “overlay point cloud” to help place a roto shape that works well for your shot
Video tutorial for the PointCloudKeyer
For more information read about this node on my blog: