MP4 Background videos not playing on Safari

I had the same problem. I had a background video without sound on a website - layout video was running without problems. my editor sent me the video back after some changes with the logo. when i pasted the new video it wasn't running on safari only.

very easy solution for me: default preferences of safari with automatic play is "not allow play videos with sound"

when i allowed to play all media the video was running. my editor had export the new video with sound. after he exported it again without sound it was running automatically again.

so -> try to export your background video without sound (uncheck when export). as long your video has no sound it works.

Safari - Unsupported third-party add-ons may cause Safari to unexpectedly quit or have performance issues

Safari doesn't load a page or webpage items are missing

Safari/other browsers – Website not loading

Try going to Safari/Preferences/Extensions and disable all extensions. Quit Safari, reopen, and see if the website will now load. If so, enable extensions one or two at a time until you find which extension is causing the problem.

Was there ever an answer posted for this problem

Uncheck sound when exporting and you should be good.