As I understand, the drivers (webcam utility? not sure) are built for x86. For some reason they don't work in apps which are built for M1, so the camera only works if an app which needs a video is running in emulation mode.
So, if you want to use Canon DSLR on M1 in a web browser (e.g. google meet), get a browser built for x86.
I'm using Chromium, it can be downloaded for x86. The issue is that Chromium doesn't have screen share feature. So, for screen share, I'm using Chrome, and joining the call for the second time, in "companion mode". That's 2 separate browsers to participate in a call. Maybe there is a way to get Chrome or Firefox for x86, but I was a bit too lazy when setting it up :)
So, if you want to use Canon DSLR on M1 in a web browser (e.g. google meet), get a browser built for x86.
I'm using Chromium, it can be downloaded for x86. The issue is that Chromium doesn't have screen share feature. So, for screen share, I'm using Chrome, and joining the call for the second time, in "companion mode". That's 2 separate browsers to participate in a call. Maybe there is a way to get Chrome or Firefox for x86, but I was a bit too lazy when setting it up :)