中文说明：有多个文件 可以根据文件名和注释进行选择 提取算法可以根据嵌入算法 自行写出 提供了较好的抗压缩和抗剪切的效果
English Description：
There are many files that can be selected according to the file name and comments. The extraction algorithm can be written according to the embedding algorithm, which provides better anti compression and anti shearing effect