Since "develop feature" implies a software development context, I have interpreted this as a request to that automates finding the best quality subtitles for this specific movie.
: For those with a local file, community-driven "library" sites like OpenSubtitles or SubDl are standard resources for finding user-uploaded .srt files. Quick Movie Facts (Ember / Kor, 2016) ember 2016 english subtitles download upd best
: Another verified resource for high-quality subtitle files. Automated Search via VLC Media Player If you are watching the film on a computer, you can use VLC's VLsub you can use VLC's VLsub