Mirroring on dual monitor RPi 4

[DevPizzini]

I am using a Raspberry Pi 4 with 2 monitors attached and when I launch RpiPlay it only uses the main one. It would be great to be able to use both of them for mirroring.

Thanks in advance

[fduncanh]

this is an X11 xwindows issue rpiplay makes no decision about window placement.

rpiplay -> gstreamer -> X11

Install xdotool if you don't have it, I think it can be used to move windows between different screens.

if it is not in your distro, find it on github.

[Bartiff]

@DevPizzini : Did you manage to do this? I'm interested in that too.

[mikewhetzel]

Also interested in this. I have a pi4 running official 7" touchscreen, and want to use RPiPlay to output to a separate HDMI-fed display. Running Buster lite so no GUI. RPiPlay seems to only display on the small touchscreen, rather than the huge tv it's connected to.