How to find webcam parameters?

[realtek]

Hi,

I have two webcams I am trying to get working with Zoneminder.

Can someone confirm how I can find out what parameters I need to set under the source settings?

Is there a linux command I can run to show them?

Thanks

[svennb]

I've been using

ffmpeg -f video4linux2 -list_formats all -i /dev/video0

and

vgrabbj -s /dev/video0

to find most of the information I needed.