Editing video footage with two aspect ratios
I am editing a Zoom video to post on YouTube. The footage is in " active speaker mode". In other words, whomever is in the frame is speaking. It switches back and forth between two speakers. The problem is that one camera captured 16:9 1080p (Speaker 1) and the other camera captured 4:3 (Speaker 2). This means that in the footage, when Speaker 1 is in view, they are full screen. Speaker 2 has two black panels on the side of the frame. I tried a test whereby I made cuts in the footage and resized the Speaker 2 clips via Effects: Scale to fill the screen. When I viewed the footage, there's a flash between those cuts where the footage is resized to fill the screen. I know there has to be an easier way to do this and am unclear on the best way forward. Any suggestions?