The subtitles don’t automatically save on video once I’ve downloaded it.

Hi,

I was able to have a complete downloaded video with subtitles when I saved it to a FB format, but now I have gone for a larger file, suitable for YouTube, the subtitles dosen’t save with the video when I have downloaded. It gives me an option to export the SRT file (which I did) but then cannot save it on my own device as a complete video.

Any help would be most appreciated.