I tried to find you when I was on this bug to see why we need to back to album view when video app exits fullscreen/visibilitychange yesterday ;)
What I guess is your comment in video.js, is for `to release the video resource to the other app`.
If we don't need this anymore(I don't think every HTML5 video app would reset the src? Do we really need it?),
do not hide player is a good UX win.