该程序创建了一个简易播放器，读入和显示视频文件，并可以使用滑动条控制视频文件的播放。一个滑动条用来控制视频播放位置，以10为步长跳进，另一个滑动条用来控制停止与播放-The program creates a simple player that reads and displays video files, and you can use the slider to control the playback of the video file. A slider to control video playback position to jump in steps of 10, and another slider to control the playback stops and