说明：  这是一个Linux下的USB摄像头捕捉程序，是一个调用V4L2（Video for Linux 2）非常好的例子。英文介绍为：This is a driver for the USB video bridge USBVision from Zoran/Nogatech, a USB-only cable used in many "webcam" devices. It supports streaming and capture of color or monochrome video via the Video4Linux API. Most V4L apps are compatible with it, but a few video-conferencing programs do not work yet.
(This is a Linux under the USB camera to capture the procedure is a call V4L2 (Video for Linux 2) a very good example. Introduction to English: This is a driver for the USB video bridge USBVision from Zoran/Nogatech, a USB-only cable used in many webcam devices. It supports streaming and capture of color or monochrome video via the Video4Linux API. Most V4L apps are compatible with it, but a few video-conferencing programs do not work yet.)