Missing Frames: How many different videos can you recognize?

I met Jiayi Young who is an artist/physicist this January at the Medicine Meets Virtual Reality 17 conference. She promised me to upload the video that I saw in person:

This video is multitasking challenging game. This project challenges the brain to process more and more information simultaneously, while providing less and less cohesive information.

Video #1 is a combination of two different videos rapidly switching frames from one video to the other; each is missing 50% of its frames. The frames of the two videos are essentially zipped or shuffled together into one, asking for the brain to respond to both stories.

Video #2 ups the anti by combining three different videos, rapidly switching frames from one video to the other. Video #3 would require four videos, etc. So on and so forth; there are a total of ten videos.