添加字幕源程序，很完整，对学习为视频添加字幕有很好的指导作用，尤其是想深入研究字幕添加原理的人，有很大帮助！-Add subtitles source, it is full of learning for the video to add subtitles have a good guide, especially in-depth study would like to add the principle of subtitles, and are very helpful!