iPads and green screens

A group of students planned to record themselves singing and dancing along to a movie video. Each students would then would then use that footage and the Green Screen by Do Ink app to digitally add themselves to the movie video. This is what the setup looked like:

February 2019
M T W T F S S
« Jan    
 123
45678910
11121314151617
18192021222324
25262728