格式不介绍了，看代码：
public final static void NV21_TO_YUV420SP(int width, int height, byte[] in) { int pixels = width * height; byte s; int count = (pixels / 2); for (int i = 0; i < count; i += 2) { s = in[pixels + i]; in[pixels + i] = in[pixels + i + 1]; in[pixels + i + 1] = s; } }
