> On Jan 21, 2020, at 12:37 PM, Thomas Guilbert <tguilb...@google.com> wrote:
> Hello,
> I'm reaching out to see if webkit would like to weigh in on the following 
> proposal:
> https://discourse.wicg.io/t/proposal-video-requestanimationframe/3691 
> <https://discourse.wicg.io/t/proposal-video-requestanimationframe/3691>
> The HTMLVideoElement.requestAnimationFrame() API allows web developers to be 
> notified when a video frame has been presented for composition, and provides 
> metadata for that frame.
> If you want to try it out, a prototype is available in Chromium Dev, behind 
> the enable-experimental-web-platform-features flag.

This is not official feedback, but I have some issues with the proposal.

First, the name is confusing. It sounds like you're requesting a frame from the 
video, but it's really a "frame available" callback. Why not call it 

Second, its interaction with normal requestAnimationFrame() and the HTML event 
loop needs to be better defined. Where in in the 
 do these callbacks fire?


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