Canon EOS R7 - clean HDMI output

[NitschSepp]

I use the Canon EOS R7 with gphoto2 succesfull, really great work. In my usage the HDMI output of the R7 should be used for video streaming simultaneously with video/photo capture.

But every gPhoto2 command causes a short black with a computer symbol at the HDMI output. Is it possible to suppress this feature?

Many thanks for your thoughts and help. Regards Josef