@elena Is the sole reason you don't want to sell it as a digital file that you need to add the subtitles in many different languages?
Because there are video container formats that allow adding many different subtitles, and most video player software allows the user to select the subtitles they want to see. If you have the subtitles for all those different languages available, they could be added to the video.
Of course, selling digital files makes piracy more easy, so there's that.