ios相机拍照，AVCam演示使用的AV Foundation捕获API录制动画，拍摄静止图像和开关相机。-AVCam demonstrates usage of AV Foundation capture API for recording movies, taking still images, and switching cameras.

测试视频捕获，精选ios编程学习源码，很好的参考资料。-Test video capture, selection of learning IOS programming source code, a good reference.