Baidu Cloud only supports subtitles in SRT format. Then change the subtitle file to be the same as the video file. If you don't have a subtitle file, you can't do anything. If so, find a subtitle format converter. Then change the subtitles to other formats, modify them to SRT format, and put them in Baidu Cloud. . Change it to the same name as the video, and then open the video with subtitles.