代码实现从usb摄像头实时捕获数据，然后用x264库进行软编码，在通过tutk的av通道实现视频流的实时传输。在linux下用交叉编译器可顺利编译通过，下载到arm开发板上即可执行。-Code to achieve capture data the USB camera in real time, and then the soft code with the x264 library, in real-time transmission through AV channel tutk vid