[@wujackwu Participant 2 years, 2 months ago]

Based on my recent trouble-shooting, your issue could be caused by two potential reasons:

1. Your CDN service provider altered the link to your video file. You might want try turning it off, so that the address of your video would change back to something like https://yourdomain.com/wp-content/uploads/2022/10/cute_dog.mp4?time=1664812918, which is the actual location of your file. You may also check the source code of our pole line hardware website, on which we encountered a similar issue a few months ago. (We bought Godaddy’s WP plan, and its default CDN setting was turned on. We now use Cloudflare. A much better CDN. )
2. Or, it may be caused by conflicting plugins installed on your website. Which means the embed function cannot work properly. You could try disable them all and flush your server cache to find the culprit.

Personally, if you are code-savvy, I would recommend employing a method called lite youtube embed for videos. Simply put, it reduces page loading time by serving your video only after the viewer hit PLAY, which drastically reduces the amount of data transferred on page load.

That’s all I can come up with based on your information. Best of luck!!