I don’t know how this effect is called… but I have an example from a comedy show: You see the scenes where several videos run in parallel. How is this effect called, and is it possible to do this with Shotcut?

Several videos in one video window

sauron March 20, 2020, 11:08am 2

Yes.
@jonray made a tutorial.

Here’s a project that you can look at to see how it can be done. The crop:rectangle filter is used.