About Hindi transcription
Hindi (हिन्दी) is written in Devanagari and spoken principally in northern India, and widely as a second language across the subcontinent. Subtitles generated here come back in that script, as ordinary written Hindi, ready to use in an SRT or VTT file.
Everyday spoken Hindi borrows heavily from English and from Urdu, often inside a single sentence, and recognition has to follow those switches rather than force everything into one vocabulary. Transcription keeps the Devanagari script; if you want the Roman-script form people write informally, translate to English instead of transcribing.

