Live Streaming with Sony A7III via HDMI
To stream with a camera such as the a7III via HDMI, you'll need another piece of hardware. An example of this kind of thing would be &quot;elgato&quot; which produce different devices for this exact thing. The simplest way is to buy a USB dongle which has a female HDMI and a male USB. Plug it into your pc, plug the camera into the dongle and boom. The camera will be interpreted as a Webcam and can thus be used in OBS, Streamlabs etc.
To prevent the camera from turning off: There's different answers I could find. Some say leaving the battery/cassette-slot open will prevent the cam from going to standby. Others say you need to disable &quot;remote control&quot; in the settings. Others again say it's not possible. My guess is that there's either a setting, a way to trick the hardware or a software-hack that can help you out.