If you have a mirrorless that has a clean HDMI out signal, I highly recommend it.
I run my mirrorless via microUSB using two apps, Camera Live[0] and CamTwist[1], both free.
[0]: https://github.com/v002/v002-Camera-Live
[1]: https://www.macupdate.com/app/mac/24275/camtwist
Camera Live claims to only support Canon, but I can tell you that Sony ASP-Cs work fine. The details of how exactly to get it working vary by camera, but a search for "$your-camera webcam CamTwist" will turn something up.
It's called "Imaging Edge Webcam" : https://support.d-imaging.sony.co.jp/app/webcam/en/
I'm personally using an A7ii with a Tamron 28-75 for Canon EF, and it works much better resolution and quality wise with the HDMI, just because of the limitation to 1024x768 of the USB camera mode, which was really meant for tethering. Coupled with a 4$ phantom battery, it's awesome! I can get a clear image in the very low light conditions of my room at night, too. No need to turn the lights on, even :)
Starting to think some kind of capture card might be worth the investment though.
Then again, I'm the type of person to lug around an A7ii with a 135 2.8 and a 28-75 2.8 everywhere I go!
https://www.amazon.co.uk/Sony-ILCE6000LB-Compact-SELP1650-El...
But yes, the prices did indeed rise. It's quite how remarkable how well cameras conserve their value compared to other electronics.
You can also find $18 fake "USB 3" devices that are the same chip, but a higher price, a different case, and a blue plug.
As it's USB2, you'll find it will only do uncompressed 1080p at 5fps, although it'll do 30fps if you use mjpeg. At either framerate, I noticed several frames of video lag, putting my lips and voice slightly out of sync (although how much is the camera vs the capture card is hard to say).
I'm fairly certain the capture card also introduces some colour distortion compared to the camera's preview screen - perhaps brightening? You'll need a way to convince your camera to autofocus continuously, which might mean running in video-recording mode at all times. And of course you'll need a camera support that's the right height for where you're making calls from. You'll need mains power, or at least enough batteries to run the camera all day. And of course, no taking calls in different rooms for you!
Works great. Haven't had any framerate issues when paired with a Panasonic GH3.
1080p -- or whatever the resolution is that it's delivering -- is easily enough for Google/Jitsi meet. Quality is much better than the MacBook Pro internal webcam.
I assume that has changed.
It's really moreso an excuse to up sell you on a video camera.
[1] https://www.mjt.me.uk/posts/wifi-streaming-video-lumix-gx80/
Whats most likely to break, however, is the shutter mechanism. But even that isn't affected here.