V4L2

Main Video/Camera/Audio Device Driver on many Linux Systems. It manages the Device Nodes in /dev/*.

Provides many Interfaces for IO Control of the Devices. With v4l2-ctl many settings can be done or Formats can be checked.

A Device Nodes Provided Formats can be checked with:

v4l2-ctl --list-formats -d /dev/video0

Almost everything Important can be extracted by:

v4l2-ctl --all -d /dev/video0