这是一个有关于视频水印的程序，包含yuv格式的读入，提取出每一帧图像，然后对每一帧图像做8*8块DCT变换，然后在中低频修改DCT系数然后恢复图像，重构成yuv格式的视频播放。

在图像处理中如何进行视频处理，如何从yuv格式的序列中提取出亮度信息，这是后面对视频处理的基础。,In image processing for video How to deal with how to format yuv sequence information extracted brightness, this is the basis of the face of video processing.

描述各种YUV文件的格式,方便提取之后的转化-every kind of YUV format

对YUV格式图像文件的读取与存储示例，能将Y分量单独提取出来。适合初学者理解YUV格式图像的存储。- YUV format image file to read and store examples, the Y component can be extracted separately. Suitable for beginners to understand YUV format image storage.