If you have video files saved locally and need external English subtitle files (.srt), third-party apps are your best bet:

Alternatively, go to .

Google's Live Caption is the most seamless way to get subtitles. It automatically detects speech from any app—YouTube, Instagram, or even recorded voice notes—and displays it as text on your screen. : Press your phone's Volume button .

: In the Live Caption settings, tap Languages & translation and add English as your preferred "Translate to" language. 3. Subtitles for In-Person Conversations