Firefox Developer Chris Double has been working on implementing support for the HTML 5 video element, which will make it possible to natively embed video files in a web page and control playback ...

Support for standard HTML video element attributes is relatively consistent, though there are gaps: Android and iOS both lack support for the preload and autoplay attributes, for example.

Gary Illyes from Google said that does not mean the video needs to be the first element on the page, but the video does need to be in your face for Google to determine if a video thumbnail should ...

Let’s take video-in-video as an example. To show a user-provided video file on the canvas, the standard HTML video element is a good starting point for a first implementation.