Web Wish 6: Responsive Posters

Last year, we finally regained support for using media queries for delivering responsive video, thanks to Scott Jehl.

That is awesome, but there's still room for improvement.

The <video> element still supports only a single source for the poster image. Wouldn't it be great if you could deliver responsive poster images along with the responsive video?

One way to do this would be allowing a child <picture> element to control the <video> poster. This would enable support for using media-queries to art direct the poster images, matching the video source. It would also allow for multiple resolutions of the poster image, lazy-loading of the poster image and adding an alt-text to the poster image.

This Christmas, I'm wishing for a way to add responsive poster images to the <video> element.

Relevant issues and PRs: