I have a background video added to my website. Somehow, it automatically generated a data-poster-url with a .jpg taken as a snapshot from the video. I have no control over this .jpg, which is pretty annoying.
The reason it is annoying is, that google lighthouse (SEO) is telling me to use more or less a .webp format. Since I can not control the generated .jpg I can not increase my website’s performance.
Any help would be appreciated.
Here is my site Read-Only: my-website