A callback to be fired the next time a frame is presented to the compositor, used by Canvas.requestVideoFrameCallback.
The current time in milliseconds, see performance.now().
Optional
The video frame metadata. If requestVideoFrameCallback() is not natively supported, this is undefined.
requestVideoFrameCallback()
undefined
A callback to be fired the next time a frame is presented to the compositor, used by Canvas.requestVideoFrameCallback.