Unfortunately that's not possible for receivers barring a break in crypto. Receivers are authenticated by the sending devices: https://blog.oakbits.com/google-

Unfortunately that's not possible for receivers barring a break in crypto. Receivers are authenticated by the sending devices: https://blog.oakbits.com/google-cast-protocol-receiver-authentication.html https://blog.oakbits.com/google-cast-protocol-receiver-authe... An alternative Chromecast receiver needs cooperation from the sender one way or another.