I have a little excerpt from an old movie that I want to use. It has fluffy borders (with round corners) and the aspect ration doesn't match my project. It would be okay if I could just enlarge it (with the center of the source pinned at the center of my output video)
What functions should I use for that?
(NB This would seem something simple that I should be just discovering myself by trying, without asking, but I'm having some trouble with the program as detailed here, hindering my learning curve. So, this is sorta theoretic until I get my program debugged.)