Confused. Trying to render video for Instagram (Insta says they accept . I was told to go to properties and create 1080wide x 1350tall. But when I Render to MP4, it says it will make video 1920 x 1080?? Maybe properties is the setting on how the pgm visually looks as I am creating but not how to be rendered? I also get confused as Instagram says they want 16:9 1:1 or 4:5. There seems no way to choose this while rendering. I also don't understand aspect ratio and the 16:9 for example. Is 16:9 equal to some numerical ratio like 1050 x 1350?? As you can tell I am quite ignorant and confused. Strange that Vegas or Movie studio doesn't allow me to make pre set selections. Thanks!!