By default, the Nikon D5600’s Live View will turn itself off after 10 minutes. You can bump that up to a maximum of 30 minutes.
On the D5600, you can find this setting under:
Custom Setting Menu (pencil icon) > C Timers/AE Lock > Auto off timers > Custom > Live View > 30m
How to Keep Live View Active Longer Than 30 Minutes
There isn’t a built-in way in the camera’s settings to disable the auto-off timer or set it to longer than 30 minutes.
If you need to keep it active longer than that, it’ll require some manual intervention. But not much. You can press any button to reset the clock. The two buttons I find most convenient and least likely to risk interrupting the video stream are:
- exposure compensation button (+/- near shutter)
- AE-L/AF-L button on the back
You can also lightly touch the shutter with a half-press, but that risks throwing off the focus.