What's the best way to frame video tracks so they have clean consistent borders? Today export a powerpoint slide with gridlines to png, usually a 6x4 grid, but in this example 3x1. Import that. Then I scale and crop my video clips to fit that grid. Then I make a separate black frame in powerpoint to match the grid, but with thick lines, export to png, and use another tool to make the background transparent. Then I lay that down on top of my framed videos to look like this. It's not easy, but it looks good. It's also a lot of work if I need to change it and add new people/clips to the video.