Embedding player on localhost

Yes but needs to be on port 80 or 443

For electron thy this fix

you can intercept the request using session.defaultSession.webRequest.onHeadersReceived in your app.whenReady() and remove the frame-ancestors from the headers (in the context of how to embed now in Electron)
you still need to set a parent to avoid getting the warning message, but it doesn’t really matter what you set it to at that point.

Android apps the discussion is still on going in the main threads

As you can see on

Where you have already posted.

Closing this thread to maintain less active threads on the same issue