The video generated by cs has no subtitles.

This may be caused by the wrong setting.

The solution is as follows: generate the corresponding subtitle file at the corresponding timestamp, click the green icon in the upper right corner and share it locally. Select custom settings, and then click Next. Select MP4 Smart Player, and then click Next. Uncheck the controller in the controller to generate the last selection light. Click Next and the video will be rendered. Now time has a lot to do with the length of time and the resolution of choice. The transcoding was successful, and the subtitles were embedded in the video when the player opened the video.