上海闸北视频修改，视频添加音乐，视频添加字幕，视频制作菜单，光盘刻录，视频剪辑。
Shanghai zhabei music video modification, video, video add subtitles added, video production menu, video clips, cd-writing.
如果幻灯片包含视频式隐藏式字幕，并且你添加了声音隐藏式字幕，则后者优先。
If a slide contains video closed captions and then you add audio closed captions, the latter takes precedence.
如果幻灯片包含视频式隐藏式字幕，并且你添加了声音隐藏式字幕，则后者优先。
If a slide contains video closed captions and then you add audio closed captions, the latter takes precedence.
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