[Bug 24934] invalid definition for the “seekable” attribute when MediaStream is set to srcObject. When seekable.length is “0”, seekable.start(0) and seekable.end(0) should not return currentTime.
[Bug 25276] Initialization for VideoTrack.selected attribute is missing while specifying steps for "Loading and Playing a MediaStream in a Media Element"
[Bug 25629] New: Give more clarity on initializing AduioTrack.enabled and VideoTrack.selected in "Loading and Playing a MediaStream in a Media Element"