Joe Raasch provides a look at the Shuffle Node and the ShuffleCopy Node in NUKE.

The ShuffleCopy / Shuffle Node in NUKE works on channels and will allow you to move, replace or remove an image’s channels from one stream to another. With a bit of a convoluted interface, the ShuffleCopy Node is often a mystery if you are not aware of the process.

This tutorial explains the Shuffle and ShuffleCopy nodes inside of Nuke

Joe provides a clear demonstration for the Shuffle Node, and shows how to navigate the almost puzzle game-like interface.

In NUKE the Shuffle and ShuffleCopy Node are more or less the same, the only difference being that the Shuffle Node will not accept a second feed, acting almost as a “lite” version of ShuffleCopy. Check out the tutorial for Understanding the ShuffleCopy Node in NUKE here.