-- v4l2_capability, /dev/video0      0x7ffeee718100
   driver          cx231xx
   card            Pixelview Xcapture USB
   bus info        usb-0000:00:1a.0-1.2
   version         0x41325
   capabilities    0x85200011
     vcapt vbicapt extpix rwsysc stream 
   device caps     0x5200001
-- inputs enumeration 'on peut voir quoi ?'
Composite1                       | camera    
S-Video                          | camera    
-- v4l2_format, Experimental     0x7ffeee718030
   type 1          video capture
   dims            720x576
   pixformat       [YUYV]
   field           4
   padding         1440
   sizeimage       829440
   colorspace      1  smpte170m
-- image formats enumeration (Experimental)
  0  vidcapt    0x00   [YUYV]   YUYV 4:2:2                       
-- controls enumeration 'is that working ?'
  Brightness                         integer     [0..255]
  Contrast                           integer     [0..127]
  Saturation                         integer     [0..127]
  Hue                                integer     [-128..127]
  Volume                             integer     [0..65535]
  Balance                            integer     [0..65535]
  Bass                               integer     [0..65535]
  Treble                             integer     [0..65535]
  Mute                               boolean     [0..1]
-- extended controls enumeration 'looking for extended'
  User Controls                      ctrl-class  [0..0]
  Brightness                         integer     [0..255]
  Contrast                           integer     [0..127]
  Saturation                         integer     [0..127]
  Hue                                integer     [-128..127]
  Volume                             integer     [0..65535]
  Balance                            integer     [0..65535]
  Bass                               integer     [0..65535]
  Treble                             integer     [0..65535]
  Mute                               boolean     [0..1]
