Similar to #9110, authors often want the ability to drive videos by animation timelines. See #11587 and https://github.com/w3c/csswg-drafts/issues/6861#issuecomment-2435020274. We'll need to figure out the details, but this could be something like ```js document.querySelector('#my-video').timeline = new ViewTimeline(...); ``` Possibly also with css support, e.g.: ```css #my-video { video-timeline: view(); } ```