Firstly, we learned about the reformat and the reason of adding this node.
Reformat 1.1*original width and length
Multiply for 1.1 to make sure everything(information) are included in the scene
Shuffle: ALT+SHIFT to see the alpha:
Using the node below to get rid of green color:
Then, we learned the node Keyer
We can control the color channels we want:
New node EdgeDetect
ChannelMerge:
ColorLookup:
VolumeRays:
At the end of the class, we learned how to group nodes.
Ctrl+G=Group, Press S in Properties to look inside.You can also copy and paste the groups, or copy the nodes and paste them into a textbox.