The HTMLVideoElement.requestAnimationFrame() API allows web developers to be notified when a video frame has been presented for composition. It also provides metadata for that frame. Here's the proposal: https://discourse.wicg.io/t/proposal-video-requestanimationframe/3691 I'm reaching out to see if webkit would like to weigh in on the proposal. If you want to try it out, a prototype is available in Chromium behind the enable-experimental-web-platform-features flag. If there is a different venue that should be used for this type of discussion please let me know. Thanks!
Thank you for reaching out. Please e-mail the webkit-dev mailing list. https://webkit.org/getting-started/#staying-in-touch