I have 3 separate iPhone video clips. Their frame sizes are: 406x720 360x360 and 406x720 respectively. I would like them to play concurrently side-by-side in a 1280x720 sized frame (16:9 aspect ratio for possible upload to YouTube). I see the combined widths (1172) are a bit shy of the 1280 total frame width but I don't mind a little pillar boxing. How do I do it?
PS - when I play my clips with a a regular media player (I use VLC) the 360x360 clip fills the vertical dimension, I just lose a bit of detail since the resolution is not as good. So it appears all 3 clips will fill the 720 height of the frame.