将RGB24转换成YUV420图片的程序，希望对大家有用。目前还没有AVI转YUV420的代码，建议先用播放器抓AVI的图片，再用bmp转YUV-Will be converted into RGB24 procedures YUV420 picture, I hope useful for all of us. There is no AVI to YUV420 code, it is recommended to use AVI player grasping the picture, an