Clean HDMI output after power on without button pressing (Sony RX10)

Hi, I have the Sony RX10 and I want to mount it to the ceiling to record presentations. I would like to set it up so that when I connect power to the camera that it directly outputs HDMI to my recording device. This ALMOST works, but I need to press the record button before it shows the video on HDMI. Before it is just a menu.​Is there a way to make it go diretly to "show HDMI video output" without me having to get a ladder and press a button to get the HDMI output? via /r/photography https://ift.tt/2HmBWDx