How to insert a transparent rectangle in HitfilmExpress
I would like to insert a rectangle which is not filled meaning that in the inside it should be transparent. I tried to things. I saved an rectangle directly in powerPoint and inserted it and also I just used a screenshot of it an inserted it but nothing was succesfull (see attached image). So what I want is that the green rectangles do not make the content on the bitmap under them (the red and blue bars) invisible. Do you have any idea, how I can do that?
I'd be happy for every comment.