If you have a legal copy of the movie file (e.g., a personal rip of a DVD you own) but it lacks subtitles, you can download standalone subtitle files (usually .srt format) from reputable subtitle databases. You can then load these files into your video player (like VLC Media Player).
When using these files, ensure you use a modern media player like or MPC-HC , which can easily load external .srt subtitle files. Applying Subtitles to Your Video:
Additionally, if they need subtitles, directing them to sites like OpenSubtitles or Project Gutenberg where subtitles can be downloaded legally would be better.