MP4 doesn't load

[epsilon]

Hi, i am using OpenLiteSpeed Wordpress on Vultr with Cloudflare. I have a problem, all works but my mp4 doesn't load and they doesn't show up in my page. All of my images are optimized with (if possibile) webv replacement... I have to convert my mp4 to gif, or they doesn't load... there are a blank space... can you help me?

 

[Cold-Egg]

Possible to check
1. Will mp4 load when CloudFlare=on, LSCache=off ?
2. Will mp4 load when CloudFlare=bypass/off, LSCache=off ?
any error shows in the dev console when the page shows a blank space?