中文说明：该程序可以定位一个中文视频的上下边界，从而为识别字幕打下基础。该算法准确率很高，我们实验测试是96.5%，是一个很高的精度。该算法利用了整个视频的序列信息和中文字体特有的字宽相等的特点来定位视频的字幕位置，是一个非常有创新的算法。
English Description：
The program can locate the upper and lower boundaries of a Chinese video, so as to lay the foundation for subtitle recognition. The accuracy of the algorithm is very high, our experimental test is 96.5%, which is a very high accuracy. The algorithm takes advantage of the sequence information of the whole video and the characteristic of the same width of Chinese font to locate the subtitle position of the video, which is a very innovative algorithm.