Thank you for the review, and I'm sorry, but the backend of this add-on doesn't support it. This page shows supported headsets (https://github.com/videojs/videojs-vr#oculus-rift-and-htc-vive-support), it looks like the only mobile headset supported is the Gear VR, which it states requires Samsung Internet, a different browser. I probably can't do anything to help you anyway, but would you care to share your use case just in case? (Which headset do you want to use, reasons for not using Youtube app)