这是一个有关于YUV文件格式的代码，实现了剪切的功能，可让初学者学习。-This is a code on the YUV file format to achieve a cut of the feature that allows beginners to learn.

裁剪yuv文件，可以设置起始帧和最后一帧，针对所有分辨率的yuv文件，采样空间也都支持-Cut yuv file, you can set the start frame and the last one, at all resolutions of the yuv file, sample space support