Following #5824, this PR adds support for some Picture-in-Picture methods described in the spec and article. It also makes sure that we can listen to the enterpictureinpicture and leavepictureinpicture events on the player.
This player behavior is very useful for accessibility because the user can cancel the action by clicking outside the button area. It is recommended by the WCAG 2.1 "2.5.2 Pointer Cancellation" spec.
The fullscreen API now returns a promise. If the player is inside an
iframe that doesn't allow fullscreen, the promise will reject and cause
an error to be logged. Instead, we should silence this promise.
Fixes#5918
Allow middleware to handle volume setter and getter. This supports things like ducking the playback volume programmatically, without affecting the player's UI volume control.
Calling video.load while the video is trying to play (that is between play and playing event) throws an error. Instead, just wait for playback to happen before resetting.
Fixes#5875
Disable the live tracker on IE11 when the document is hidden to fix the slow down and eventual crashing of web pages on IE11.
After #5879 was completed, we noticed that live streams still have an issue. This is because the live tracker we have also uses setInterval. Unfortunately, just disabling setInterval in the live tracker was not enough. Instead, we decided the best course of action is to just disable the live tracker altogether.
1. We were not always able to clean up `resize` on the `ResizeManager`, as the iframe
contentWindow can disappear before dispose
2. Native Tracks on Safari do not have an `off` so we have to deal with
event listeners manually
Fixes#5878
The seek bar updates on a 30ms interval to have a nice, smooth transition as time ticks forward. Unfortunately, IE11 has some performance issues with interval when the document is hidden. This doesn't appear to be an issue when using setTimeout but using a setTimeout was causing the play progress to appear very jerky in comparison.
Instead, we should just not update the play progress when the document is hidden. Besides solving the issue in IE11, it makes sense to do as no one could be seeing the progress bar. In addition, update() is now a no-op if the seek-bar element isn't visible.
Fixes#5575
