Pi 4 Force hdmi 2 for audio only

    Hi

    Is there a line or lines that can be added to config.txt to force hdmi 2 on the pi 4 to output audio only, example being the hdmi 1 is outputing a 4kuhd rip to the tv and the hdmi 2 just outputs the hires audio to my receiver. I know this can be done in kodi but just wondered if there was a way of forcing it in config.

    thanks

    To my knowledge such an option doesn't exist, and there is also no need. HDMI protocol does a negotiation with the output device, and if it's just an audio device, no video will be sent.