ioctl VIDIOCGTUNER: Invalid argument
ioctl VIDIOCGFBUF: Invalid argument
try direct access to /dev/video0
device /dev/video0 open for read
### video4linux device info [/dev/video0] ###
general info
    VIDIOCGCAP
	name                    : "Camera"
	type                    : 0x1 [CAPTURE]
	channels                : 1
	audios                  : 0
	maxwidth                : 356
	maxheight               : 292
	minwidth                : 48
	minheight               : 32

channels
    VIDIOCGCHAN(0)
	channel                 : 0
	name                    : "STV06xx"
	tuners                  : 0
	flags                   : 0x0 []
	type                    : CAMERA
	norm                    : 0

tuner

audio
    VIDIOCGAUDIO
	audio                   : 0
	volume                  : 0
	bass                    : 0
	treble                  : 0

picture
    VIDIOCGPICT
	brightness              : 0
	hue                     : 0
	colour                  : 0
	contrast                : 0
	whiteness               : 0
	depth                   : 8
	palette                 : unknown

buffer

window
    VIDIOCGWIN
	x                       : 0
	y                       : 0
	width                   : 356
	height                  : 292
	chromakey               : 0
	flags                   : 0


### v4l2 device info [/dev/video0] ###
general info
    VIDIOC_QUERYCAP
	driver                  : "STV06xx"
	card                    : "Camera"
	bus_info                : "usb-0000:00:1d.0-1"
	version                 : 2.5.0
	capabilities            : 0x5000001 [VIDEO_CAPTURE,READWRITE,STREAMING]

standards

inputs
    VIDIOC_ENUMINPUT(0)
	index                   : 0
	name                    : "STV06xx"
	type                    : CAMERA
	audioset                : 0
	tuner                   : 0
	std                     : 0x0 []
	status                  : 0x0 []

video capture
    VIDIOC_ENUM_FMT(0,VIDEO_CAPTURE)
	index                   : 0
	type                    : VIDEO_CAPTURE
	flags                   : 0
	description             : "GRBG"
	pixelformat             : 0x47425247 [GRBG]
    VIDIOC_ENUM_FMT(1,VIDEO_CAPTURE)
	index                   : 1
	type                    : VIDEO_CAPTURE
	flags                   : 0
	description             : "RGB3"
	pixelformat             : 0x33424752 [RGB3]
    VIDIOC_ENUM_FMT(2,VIDEO_CAPTURE)
	index                   : 2
	type                    : VIDEO_CAPTURE
	flags                   : 0
	description             : "BGR3"
	pixelformat             : 0x33524742 [BGR3]
    VIDIOC_ENUM_FMT(3,VIDEO_CAPTURE)
	index                   : 3
	type                    : VIDEO_CAPTURE
	flags                   : 0
	description             : "YU12"
	pixelformat             : 0x32315559 [YU12]
    VIDIOC_ENUM_FMT(4,VIDEO_CAPTURE)
	index                   : 4
	type                    : VIDEO_CAPTURE
	flags                   : 0
	description             : "YV12"
	pixelformat             : 0x32315659 [YV12]
    VIDIOC_G_FMT(VIDEO_CAPTURE)
	type                    : VIDEO_CAPTURE
	fmt.pix.width           : 356
	fmt.pix.height          : 292
	fmt.pix.pixelformat     : 0x47425247 [GRBG]
	fmt.pix.field           : NONE
	fmt.pix.bytesperline    : 356
	fmt.pix.sizeimage       : 103952
	fmt.pix.colorspace      : SRGB
	fmt.pix.priv            : 0

controls

    VIDIOC_QUERYCTRL (9963793)
	id                      : 9963793
	type                    : INTEGER
	name                    : "exposure"
	minimum                 : 0
	maximum                 : 32768
	step                    : 1
	default_value           : 20000
	flags                   : 0

    VIDIOC_QUERYCTRL (9963793 | V4L2_CTRL_FLAG_NEXT_CTRL)
	id                      : 9963795
	type                    : INTEGER
	name                    : "analog gain"
	minimum                 : 0
	maximum                 : 15
	step                    : 1
	default_value           : 10
	flags                   : 0

    VIDIOC_QUERYCTRL (9963795 | V4L2_CTRL_FLAG_NEXT_CTRL)
	id                      : 9963796
	type                    : BOOLEAN
	name                    : "horizontal flip"
	minimum                 : 0
	maximum                 : 1
	step                    : 1
	default_value           : 0
	flags                   : 0

    VIDIOC_QUERYCTRL (9963796 | V4L2_CTRL_FLAG_NEXT_CTRL)
	id                      : 9963797
	type                    : BOOLEAN
	name                    : "vertical flip"
	minimum                 : 0
	maximum                 : 1
	step                    : 1
	default_value           : 0
	flags                   : 0

    VIDIOC_QUERYCTRL (9963797 | V4L2_CTRL_FLAG_NEXT_CTRL)
        break