Convert MP4 to SRT.
Generate accurate SRT subtitles from an MP4 video automatically with Whisper AI — perfectly timed caption cues.
How it works
- 01
Upload your MP4
Drop a file or pick one from your device. Private by default.
- 02
Transcribe with Whisper
faster-whisper (small model + voice activity detection) produces an accurate transcript — no paid API in the loop.
- 03
Open in TranscriptAI
Grab your SRT, or open it in TranscriptAI for notes, summaries, flashcards and action items.
Accurate Whisper AI transcription
Voice activity detection for clean output
Private uploads, auto-deleted after 1 hour
No watermark, no signup to try
Free and open-source engine (Whisper)
Unlock notes & summaries in TranscriptAI
Your file is ready. Want to do more with it?
Open this file in TranscriptAI to generate a transcript, summary, structured notes, flashcards, quiz questions or action items — automatically.
Common questions
Is it free?+
Yes — convert MP4 to SRT free. Paid plans add larger files, batch and priority.
Is my recording private?+
Uploads go to a private bucket, are transcribed, and auto-delete after 1 hour. Files never touch a third-party API.
How accurate is it?+
We use Whisper's small model with voice activity detection — strong accuracy across accents, and clean handling of pauses and silence.
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