4
隨着話題，當我運行：捕捉畫面（uvccapture捕獲黑畫面）
sudo uvccapture -S40 -C30 -G80 -B20 -x1280 -y720 -v
我得到一個大黑畫面（相同的結果與-m標誌）
但是，當我運行時：
sudo uvccapture -S40 -C30 -G80 -B20 -x1280 -y720 -v -t5
這意味着它會每5秒拍一張照片。
它工作良好（圖片是好的）。
但我不能使用該命令，因爲它不會停止拍照。
你知道什麼是錯的嗎？
結果：
Using videodevice: /dev/video0
Saving images to: snap.jpg
Image size: 1280x720
Taking snapshot every 0 seconds
Taking images using mmap
Resetting camera settings
ioctl querycontrol error 22
Setting camera brightness to 20
Setting camera contrast to 30
Setting camera saturation to 40
Setting camera gain to 80
ioctl querycontrol error 22
Saving image to: snap.jpg
的lsusb：
Bus 001 Device 004: ID 041e:4088 Creative Technology, Ltd
的dmesg：
[3.192732] usb 1-1.3: new high-speed USB device number 4 using dwc_otg
[3.321292] usb 1-1.3: New USB device found, idVendor=041e, idProduct=4088
[3.334037] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[3.343098] usb 1-1.3: Product: VF0700 Live! Cam Chat HD
[3.350192] usb 1-1.3: Manufacturer: Creative Technology Ltd.
[3.357531] usb 1-1.3: SerialNumber: 2G130236
[3.949616] udevd[154]: starting version 175
[5.197753] Registered led device: led0
[5.294970] Linux media interface: v0.10
[5.499646] Linux video capture interface: v2.00
[6.009958] uvcvideo: Found UVC 1.00 device VF0700 Live! Cam Chat HD (041e:4088)
[6.210327] input: VF0700 Live! Cam Chat HD as /devices/platform/bcm2708_usb/usb1/1-1/1-1.3/1-1.3:1.0/input/input0
[6.369436] usbcore: registered new interface driver uvcvideo
[6.502467] USB Video Class driver (1.1.1)