How to change webcam resolution

In zoom-client (from snap) I can choose whether to use HD video or not, and turns out this setting persists when I close Zoom and open Cheese. It makes me think that this setting is global instead of zoom specific. Unfortunately Cheese doesn't have this setting, so that I need to open Zoom just to change this setting.

My question is, can I change webcam resolution without opening Zoom, probably via a terminal command line or a setting GUI (such as gnome settings)?

Solution 1:

I just opened Cheese on ubuntu 20.04 to see if I could find this setting and I actually did.

If you click the icon at the top right corner that has 3 horizontal lines and then go to Preferences you will find two drop down settings, one for the Photo Resolution and the other one for the Video Resolution of your webcam.

If for some reason you cannot find those settings there, I will assume that you are using an external webcam that probably needs some third party software to tweak its settings. In that case, I suggest that you go to HP's website and search for you webcam's model specific software.

Hope this helps