Apple's new Mac mini and Mac Studio feature genlock support over USB-C, allowing users to precisely synchronize a display with a camera such as the iPhone 17 Pro, without the need for additional equipment.
It keeps multiple cameras and displays locked to the same timing signal, stopping footage from drifting out of sync during a multi-camera shoot.
Can someone elaborate what this means? I’m not exactly following.
My take might be a bit old-school, but Genlock is also about syncing the capture frame rate with the playback frame rate. So if you're recording someone in front of a display, the display frame generation and camera capture periods are perfectly synchronised and this stops the flickering or black bars that sometimes appear on the recorded copy of the display.
Same here, and I work in video. I think it has to do with live video streaming and seamlessly switching in between multiple cameras.
Let’s say you have two cameras both recording at 30 frames per second. Without genlock synchronizing the timing of those 30 frames per second, each camera’s 30 frames would be recording at different intervals of time as measured in milliseconds.
So if you’re trying to switch camera angles in a live feed, there could be a 1-frame hiccup caused by the difference in the two cameras’ clocks that might be perceptible as a slight visual glitch.
Genlock is meant to synchronize the 2 cameras’ clocks so each of their 30 frames per second are both being captured at the same millisecond.
I think that’s how it works, it’s a pretty niche thing, but maybe if you’re a high end live streamer or TV studio this matters you?
