This site is still being staged, fortunately. All I did was delete some unused items from the Media Library. I noticed afterward that the video background in my home page color section stopped playing. Just a black box.
The video resides in the media library and it is there. If I edit the page and then go to preview, the video plays. But if I update the site and hit it from the internet, it is blank.
I have tried swapping in other videos from my media library and also one from youtube. Everything works in preview mode, but not live.