[ycombobreaker]

Having just used it, it feels like a few factors:

- a background scene is usually static. if a pixel matches its historical average (i e. not changing) then it's probably background.

- if a pixel color matches its neighbors, it's probably the same as them. i noticed my black shirt tripped it up on occasion, but was all-or-nothing.

- people are blobs, not diffuse, so try to segment large regions.

[riedel]

Yes, it did not work for me sitting with a laptop on a swing chair. It actually works better with clear static features in the background, but it seams to be a bit more (cnn?) because it seams to isolate paintings on the wall for me as well. Wish there was more open source easy to use camera stream manipulation. Skype also has background blurring.

[MivLives]

My work is using Meets, and I second this desire to edit my camera stream. I didn't find anything even cheap to do it.

[thaumasiotes]

A green screen should make it pretty straightforward?

[mark-r]

Yes, that would make it trivial. But Zoom gives you the option of using a green screen or not.