Html5 video file not found issue

It’s not the site. iOS 15 is the problem. One that they know about. I spent just under an hour on the phone with apple care yesterday about the same issue. There are no work arounds. I was transferred to a senior specialist who told me that they know about it and are working on a patch. No timeline for that tho :/

Hello jamiel288,

Thanks for reaching out to us in Apple Support Communities about accessing a video on a website. We're happy to help by looking into this more! 

This error typically means that there is a problem with the actual video on the site or that the video has been removed from the site. You can test this by accessing the website from a different device and if you receive the same error, you will need to reach out to the website developer directly.

Hope this helps.

Best Regards.