No picture with usb camera

[Qvagin]

Installed ZoneMinder, and set up Web cameras Genius EYE 312 does not work and when you connect to a remote Web cameras from Ineta see a black screen.
When you run zmu-d / dev/video0-q-v
message Error, failed to query crop capabilities / dev/video0: Invalid argument - may be in this problem.

Please show me how to correctly configure a web camera in ZoneMinder, yes, and about setting other sources tell us!