Logitech C920 glitching in online meetings on MacBook M1 Pro

Yep, I've been encountering this too. Logitech C920 plugged in to MacBook Pro with M1 Pro processor. The video stream will occasionally contain a frame that looks, to my eye, incomplete. Here's a short test video demonstrating the issue in two separate frames. Here are the two frames with the issue:

I've tried several troubleshooting steps:

• I've removed various USB hubs between the camera and the computer, and now have the camera's USB-A connector connected to an Apple A1632 USB-C to USB-A adapter, which is connected directly to a USB-C port on the MacBook Pro.
• I've disconnected all other physical connections to the laptop, leaving only the webcam attached to the USB adapter.
• I've tried several different applications: Google Meet via Chrome, Photo Booth, FaceTime, and QuickTime, which I used to capture the video in this post.
• I've also purchased and swapped in a brand new C920 camera.

In all of the above cases, the issue persists. Other troubleshooting notes:

• The issue does not occur when the webcam is connected to my Windows 10 desktop.
• The issue does not occur if I preview, or record, using 720p rather than 1080p — for example, by choosing quality "High" instead of "Maximum" in QuickTime. This adds circumstantial evidence to my theory that the camera is occasionally exceeding some bandwidth bottleneck when transmitting at maximum resolution.
• In hopes of finding some smoking gun, I've watched the system logs in Console while also previewing the video, and looked for some relevant logs that occur at the same time as the incomplete frames, but have had no luck.
• I've contacted Logitech support, and they suggested purchasing a new device, which as I noted earlier did not help.

Managed to fix this by turning off the Auto-Focus option on the Logitune Mac plugin, and then on again.

With the same issue, I've narrowed it down to one of two things.

• Connected via any USB-A to USB-C dongle, I can make the flicker go away by lowering my camera resolution to 720p. At 1080p I will get flickering.
• Connected via USB-A, I can run at 1080p without flickering

I know this doesn't solve the problem but it is data. I share your frustration since most laptops are USB-C now and dongles or hubs are a necessity.

I finally ended up buying the MX Brio also from Logi and the issues went away with this one. It's weird, but probably is maybe something related with the system compatibility between Mac and the Logi C920. So far the MX Brio is doing the job.

What else is on that hub the might waking up all the time! That would be my first guess!

Can you bypass the hub and plug the camera directly into a port on your Mac as a test?

I ended up purchasing a Logitech Brio 505 from Dell, and haven't seen the issue reappear. It was time for an upgrade anyways.

Still using the same camera, I have pretty much isolated the issue to high CPU usage. As long as the processor is not working overtime, then I do not experience the issue.

Not a great solution, but it seems to work. At least until it is time to upgrade. Maybe the new MX Brio...

I've been having a similar issue, but the flickering/flashing is constant, and only on zoom calls (even if no one else was on). Not on the photo booth app or Teams. Just now, it went away the moment I turned HD on for the video settings, and came back when I turned HD off. We'll see if it lasts, but so far, so good.

Have the same issue with my Logitech Camera, M1 Mac Mini. Issue happens when the CPU and memory usage is high.

I “fixed” my problem by reducing my outgoing video quality in Google Meet to 720p.

I have the same problem, and it manifests in Google Chrome (and NOT in Zoom). The issue is in Google Meet and in Squadcast.

Which leads me to believe that it may have something to do with the frame rates. This logitech camera records at NTSC 60Hz - and that can either be 29.97 frames per second OR 30 Frames per second. It's possible that the browser is running a slightly different FPS and there is something weird with the way it does the adjustment.

Squadcast is recording at 30FPS.

I got some more clues today into this issue that does align with the CPU usage theory (maybe also RAM?) - generally the processing power specifically allocated to the tab window in Chrome where we are doing our Squadcast recording. Things that trigger glitches: Whenever we toggle out of that chrome tab where the call is being run, whenever someone receives a text message that triggers an imessage notification on the computer, that sort of thing. It also happens when we open up a separate application while the video call is going.

Things that decrease glitches: switching to 720p (not an option), turning off the self-view mode so that users don't see themselves on screen as they record.

I don't get this issue in Zoom.

I pretty much figured out when the memory or processor was used up the camera would glitch.

For better or worse i got the new Logitech MX BRIO. It was like $200 which is expensive, but it is nice, much better image, and have a shutter. This way I can close the shutter and know I am not being seen.

The shutter feature was the main reason I bumped up to a new one. Also I had the old one for who knows how long, so I figure spend the money and this one should last another 5 to 8 years.

Hope this helps!

I have a 2020 Mac mini M1 (Sonoma 14.3), that I just finally purchased a webcam for the other day, the C920S. I am running it through the KVM switch on my Dell U2723QE monitor so that I can use it both on my windows based work laptop for Teams calls and on my Mac for FaceTime calls. After getting it all set up I noticed some flickering on the bottom half of my video feed that was occurring in FaceTime and the LogiTune app. Those on the other end of my FaceTime call also noticed the flickering. On my work laptop I did not notice any flickering, but I have not had much need to use it there yet. I will monitor and update if I see any changes, but it sure is disheartening to buy a new setup and have it start out with these issues after only reading great reviews of the camera.