Retrieves a URL for a video source in a format that is web-compatible.
getPlayableUrl = function(videoSrc)
static getPlayableUrl(videoSrc: string): URL;
Returns a URL object to the web-compatible video source.
This process may require a conversion - causing the video player to wait until the resource is fully available. To ensure that the video is fully converted before setting in the player, refer to getPlayableUrlAsync.