I have a multi-layer where the layer farthest in the back, is appearing through a chroma-keys box on the layer above it.

What I want it to be able to have that last layer "cycle" between two different things. In my case, it would be automatically cycling between the show "slate", and the view comments, at a given interval.

I cannot get my head around how I can do this without having to change inputs.

The only way I can immediate figure is to have two separate multi-layer input, each one having that background image different, and then create a looping playlist between those two inputs.

Is that the only option I have?