可以实现的功能是打开CIF或者SIF格式的YUV视频序列，在对话框中显示出文件名和包含的总帧数，能够抽取视频序列的某一帧，并可以保存在任意路径下。-Function can be achieved is open CIF or SIF format YUV video sequences, in the dialog box shows the file name and include the total number of frames to extract a particular vid