Awesome, thanks @aurora !
Yes, I had contacted Wix Support awhile back but it was about a separate issue (to do with Wix Music - long story) that resulted in them transferring all my files across all my sites again (no clue how they did it, but they were unable to undo, so I’ve been going through site by site and deleting un-site related files. Anyways, no biggie, but this one video file I can’t delete.
I will call Wix Support again as you suggested. I originally posted here since the media folder is in Beta, I made the assumption Wix Support couldn’t necessarily help with Beta products. But I will give them a call!
Thanks again! And all the best.