On Mac and on Linux I can use an URL with user/password to play from an URL using QMediaContent in a QMediaPlayer. For example an URL like this:

https://user:password@domain.com/file.mp3

On Windows, this does not work, due to restriction in the wmf backend. One would have to create and use an IMFNetCredentialManager to load a file with credentials:

https://msdn.microsoft.com/en-us/library/windows/desktop/aa473824%28v=vs.85%29.aspx

I would really like to see support for credentials on Windows. But probably that would mean to change the QMediaPlayer and/or QMediaObject API? Could QAuthenticator be a solution (i.e. adding a property "authenticator" to QMediaPlayer that is used in the backends, if possible)?