Here’s a little timelapse of the general workflow for our keying shots.
First we track the camera and save that as a blendfile. From that file we generate a new file that is then used as base for masking and keying. The tracking markers can often be re-used as a way to mask out stuff from the footage.
The cleaned footage is then saved as 4k openEXR files with premultiplied alpha channel.
A third blendfile is created as a base for that layout, swapping the footage for the clean plates and setting up the final shot dimensions (1920×800). That file is then handed over to the person that is then doing the layout for it. The scene layout for this scene was originally done by Andy.
Usually after the main composite is done I fix some alpha-blending issues that cannot be solved in the pre-key outside the main composite.
The key that you see here is still a little but too harsh on the one side of the head, but for the demo I didn’t want to tweak it too long.