The YouTube app doesn’t support picture-in-picture, but until yesterday there was a functional workaround that allowed you to watch YouTube.com videos in Safari in picture-in-picture mode.
At the moment, this workaround is gone and it’s not clear if it’s a bug or a deliberate removal. When I try to use picture-in-picture in a video on a mobile YouTube website, it doesn’t work. In full screen mode[Picture in Picture]When you tap the button, the video will appear for a moment, but it will immediately appear on the website and cannot be used as a Picture in Picture window.
Picture-in-picture for iOS 14 no longer works on the video iPhone 14 on the YouTube website. YouTube videos embedded elsewhere will continue to work. pic.twitter.com/8vTFy4u3Ut
-Eric Slivka (@eslivka) September 18, 2020
Picture-in-picture works on YouTube.com iPad, And YouTube videos embedded in third-party sites such as MacRumors.com appear to play in picture-in-picture mode, but picture-in-picture is not working on YouTube websites.
Yesterday I tested Picture in Picture on YouTube for a Picture in Picture tutorial video and it worked fine as shown below. Since iOS and Safari haven’t been updated, it’s not clear what’s going on.
At the moment, Picture in Picture doesn’t work on mobile YouTube websites, but there is another workaround. If you Request a desktop site Safari on YouTube.com allows you to make Picture in Picture work as intended.