@ jaykiskel I've tried this feature but I'm not sure how it is supposed to work. From the instructions, it sounds like the image uploaded will be used as the preview image in the player. So it doesn't show just a black rectangle with a play button.
However, I've uploaded a image and it seems to have been successful (i see it in my S3 bucket), but the player is still just a black rectangle, no preview image. I'm using a shortcode in my content on a post. Am I misunderstanding how this should work?
I think what the original poster was mentioning is something different.