我最近购买了一款罗技网络摄像头 c270，它与 cheese 配合使用；但是，它与 guvcview 配合使用却不行。我从电脑中彻底清除了 cheese。然后我删除并重新安装了 guvcview，但仍然不起作用。我甚至尝试从命令行启动。但是没有成功。任何帮助都非常感谢。无论如何，谢谢，以下是日志。对于任何足够勇敢的人...我想我可能缺少正确的驱动程序和/或编解码器（视频）
jorge@nixbox ~ $ sudo guvcview -d /dev/video0
[sudo] password for jorge:
guvcview 1.7.1
file guvcview_video.mkv has extension type 1
file guvcview_image.jpg has extension type 0
file guvcview_image.jpg has extension type 0
Video file suffix detected: 1
Image file suffix detected: 0
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
bt_audio_service_open: connect() failed: Connection refused (111)
bt_audio_service_open: connect() failed: Connection refused (111)
bt_audio_service_open: connect() failed: Connection refused (111)
bt_audio_service_open: connect() failed: Connection refused (111)
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
video device: /dev/video0
Init. UVC Camera (046d:0825) (location: usb-0000:00:04.1-1)
{ pixelformat = 'YUYV', description = 'YUV 4:2:2 (YUYV)' }
{ discrete: width = 640, height = 480 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 160, height = 120 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 176, height = 144 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 320, height = 176 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 320, height = 240 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 352, height = 288 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 432, height = 240 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 544, height = 288 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 640, height = 360 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 752, height = 416 }
Time interval between frame: 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 800, height = 448 }
Time interval between frame: 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 800, height = 600 }
Time interval between frame: 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 864, height = 480 }
Time interval between frame: 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 960, height = 544 }
Time interval between frame: 1/15, 1/10, 1/5,
{ discrete: width = 960, height = 720 }
Time interval between frame: 1/10, 1/5,
{ discrete: width = 1024, height = 576 }
Time interval between frame: 1/10, 1/5,
{ discrete: width = 1184, height = 656 }
Time interval between frame: 1/10, 1/5,
{ discrete: width = 1280, height = 720 }
Time interval between frame: 2/15, 1/5,
{ discrete: width = 1280, height = 960 }
Time interval between frame: 2/15, 1/5,
{ pixelformat = 'MJPG', description = 'MJPEG' }
{ discrete: width = 640, height = 480 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 160, height = 120 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 176, height = 144 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 320, height = 176 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 320, height = 240 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 352, height = 288 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 432, height = 240 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 544, height = 288 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 640, height = 360 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 752, height = 416 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 800, height = 448 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 800, height = 600 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 864, height = 480 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 960, height = 544 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 960, height = 720 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1024, height = 576 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1184, height = 656 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1280, height = 720 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1280, height = 960 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ pixelformat = 'RGB3', description = 'RGB3' }
{ discrete: width = 640, height = 480 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 160, height = 120 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 176, height = 144 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 320, height = 176 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 320, height = 240 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 352, height = 288 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 432, height = 240 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 544, height = 288 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 640, height = 360 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 752, height = 416 }
Time interval between frame: 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 800, height = 448 }
Time interval between frame: 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 800, height = 600 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 864, height = 480 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 960, height = 544 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 960, height = 720 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1024, height = 576 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1184, height = 656 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1280, height = 720 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1280, height = 960 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ pixelformat = 'BGR3', description = 'BGR3' }
{ discrete: width = 640, height = 480 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 160, height = 120 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 176, height = 144 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 320, height = 176 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 320, height = 240 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 352, height = 288 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 432, height = 240 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 544, height = 288 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 640, height = 360 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 752, height = 416 }
Time interval between frame: 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 800, height = 448 }
Time interval between frame: 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 800, height = 600 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 864, height = 480 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 960, height = 544 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 960, height = 720 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1024, height = 576 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1184, height = 656 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1280, height = 720 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1280, height = 960 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ pixelformat = 'YU12', description = 'YU12' }
{ discrete: width = 640, height = 480 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 160, height = 120 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 176, height = 144 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 320, height = 176 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 320, height = 240 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 352, height = 288 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 432, height = 240 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 544, height = 288 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 640, height = 360 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 752, height = 416 }
Time interval between frame: 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 800, height = 448 }
Time interval between frame: 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 800, height = 600 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 864, height = 480 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 960, height = 544 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 960, height = 720 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1024, height = 576 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1184, height = 656 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1280, height = 720 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1280, height = 960 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ pixelformat = 'YV12', description = 'YV12' }
{ discrete: width = 640, height = 480 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 160, height = 120 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 176, height = 144 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 320, height = 176 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 320, height = 240 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 352, height = 288 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 432, height = 240 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 544, height = 288 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 640, height = 360 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 752, height = 416 }
Time interval between frame: 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 800, height = 448 }
Time interval between frame: 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 800, height = 600 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 864, height = 480 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 960, height = 544 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 960, height = 720 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1024, height = 576 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1184, height = 656 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1280, height = 720 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 1280, height = 960 }
Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
vid:046d
pid:0825
driver:uvcvideo
mapping control for Pan (relative)
UVCIOC_CTRL_MAP - Error: No such file or directory
mapping control for Tilt (relative)
UVCIOC_CTRL_MAP - Error: No such file or directory
mapping control for Pan Reset
UVCIOC_CTRL_MAP - Error: No such file or directory
mapping control for Tilt Reset
UVCIOC_CTRL_MAP - Error: No such file or directory
mapping control for Focus (absolute)
UVCIOC_CTRL_MAP - Error: No such file or directory
mapping control for LED1 Mode
UVCIOC_CTRL_MAP - Error: No such file or directory
mapping control for LED1 Frequency
UVCIOC_CTRL_MAP - Error: No such file or directory
mapping control for Disable video processing
UVCIOC_CTRL_MAP - Error: No such file or directory
mapping control for Raw bits per pixel
UVCIOC_CTRL_MAP - Error: No such file or directory
mapping control for Off
UVCIOC_CTRL_MAP - Error: Inappropriate ioctl for device
checking format: 1196444237
VIDIOC_G_COMP:: Inappropriate ioctl for device
fps is set to 1/30
drawing controls
fps is set to 1/30
Checking video mode 640x480@32bpp : OK
Could not grab image (select timeout): Resource temporarily unavailable
Could not grab image (select timeout): Resource temporarily unavailable
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
Ignoring empty buffer ...
^CIgnoring empty buffer ...
Ignoring empty buffer ...
write /home/jorge/.config/guvcview/video0 OK
free controls
cleaned allocations - 100%
Closing portaudio ...OK
Closing GTK... OK
答案1
你的系统？使用 16.04 系统，我可以让它工作。尝试使用较低的值进行展示，例如：
我也遇到了很多错误。
:~$ guvcview
GUVCVIEW: version 2.0.2
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Aucun fichier ou dossier de ce type
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Aucun fichier ou dossier de ce type
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Aucun fichier ou dossier de ce type
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Aucun fichier ou dossier de ce type
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Aucun fichier ou dossier de ce type
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Aucun fichier ou dossier de ce type
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Aucun fichier ou dossier de ce type
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Aucun fichier ou dossier de ce type
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: Aucun fichier ou dossier de ce type
ALSA lib pcm_dsnoop.c:606:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm.c:2266:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2266:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2266:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pulse.c:243:(pulse_connect) PulseAudio: Unable to connect: Connexion refusée
ALSA lib pulse.c:243:(pulse_connect) PulseAudio: Unable to connect: Connexion refusée
Cannot connect to server socket err = Aucun fichier ou dossier de ce type
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
Cannot connect to server socket err = Aucun fichier ou dossier de ce type
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave
Cannot connect to server socket err = Aucun fichier ou dossier de ce type
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
Cannot connect to server socket err = Aucun fichier ou dossier de ce type
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
Cannot connect to server socket err = Aucun fichier ou dossier de ce type
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
V4L2_CORE: VIDIOC_S_EXT_CTRLS for multiple controls failed (error -1)
V4L2_CORE: using VIDIOC_S_CTRL for user class controls
V4L2_CORE: control(0x0098091a) "White Balance Temperature" failed to set (error -1)
V4L2_CORE: VIDIOC_S_EXT_CTRLS for multiple controls failed (error -1)
V4L2_CORE: using VIDIOC_S_EXT_CTRLS on single controls for class: 0x009a0000
V4L2_CORE: control(0x009a0902) "Exposure (Absolute)" failed to set (error -1)
V4L2_CORE: Could not grab image (select timeout): Ressource temporairement non disponible
V4L2_CORE: Could not grab image (select timeout): Ressource temporairement non disponible
V4L2_CORE: Could not grab image (select timeout): Ressource temporairement non disponible
GUVCVIEW: video codec changed to 0
GUVCVIEW: video codec changed to 8
GUVCVIEW: (status) saving image to /home/kx16/my_photo-2.jpg
GUVCVIEW: (status) saving image to /home/kx16/my_photo-3.jpg
V4L2_CORE: Could not grab image (select timeout): Ressource temporairement non disponible