v4l2-ctl --all
Driver Info (not using libv4l2):
	Driver name   : sonixb
	Card type     : USB camera
	Bus info      : usb-0000:00:12.1-2
	Driver version: 3.19.8
	Capabilities  : 0x85200001
		Video Capture
		Read/Write
		Streaming
		Device Capabilities
	Device Caps   : 0x05200001
		Video Capture
		Read/Write
		Streaming
Priority: 2
Video input : 0 (sonixb: ok)
Format Video Capture:
	Width/Height  : 640/480
	Pixel Format  : 'S910'
	Field         : None
	Bytes per Line: 640
	Size Image    : 384000
	Colorspace    : SRGB
	Custom Info   : feedcafe
Streaming Parameters Video Capture:
	Frames per second: invalid (0/0)
	Read buffers     : 2

User Controls

                     brightness (int)    : min=0 max=255 step=1 default=127 value=127 flags=slider
                       exposure (int)    : min=0 max=1023 step=1 default=66 value=419 flags=inactive
                 gain_automatic (bool)   : default=1 value=1 flags=update
                           gain (int)    : min=0 max=47 step=1 default=31 value=42 flags=inactive
           power_line_frequency (menu)   : min=0 max=2 default=0 value=0