将指定文件夹下的所有图像改为jpeg格式(可重新设置格式比如jpg,bmp) 并将文件名改为“文件夹名+空格+序号”。序号从001开始 递归进行。 -The specified folder changed all jpeg format image (which can be re-set format such as jpg, bmp) file name will be changed to folder name+ Spaces+ Serial number. Serial nu

可以将视频每一帧保存为图像，按序号存储。-Each frame of video can be saved as an image