Automatic Subtitle Generator

The TranscriptAI app turns your audio or video into clean SRT or VTT subtitles, with broadcast-standard timing, an in-browser editor, and translation built in. Sign up free to create your own.

Sign Up Free to Generate SubtitlesSee the Subtitles Feature
  • SRT & VTT
  • Audio or Video
  • In-browser Editor
  • Translate Captions
  • 99 Languages

How Subtitles Work in the App

Once you are signed in, the app takes raw media to a polished caption file in a few steps.

  • Upload an MP3, WAV, MP4, MOV, or paste a YouTube/Vimeo link
  • AI transcribes the speech with accurate timestamps
  • Open Subtitle Studio to edit text, fix timing, split or merge cues
  • Export SRT, VTT, or styled ASS captions in one click
  • Translate the caption track to another language while keeping timing

Captions That Meet The Standard

Most auto-tools dump unreadable text. We apply the rules broadcasters use.

  • Maximum 42 characters per line, never more than 2 lines
  • Reading speed capped at 20 characters per second
  • Minimum and maximum cue durations enforced (5/6s-7s)
  • Smart line breaks at clauses, never mid-word
  • A live compliance meter flags any cue that reads too fast
  • Optional speaker labels for closed-caption (CC) output

Frequently Asked Questions

What subtitle formats can I download?

SRT and WebVTT are available on every plan, plus styled ASS (including karaoke word-by-word captions) for advanced use. All are generated with standards-compliant timing.

Can I generate subtitles for a movie or long video?

Yes. Upload the video file (or its audio) and the generator handles full-length films and long videos, segmenting and timing the captions automatically.

Can I edit the subtitles before downloading?

Yes. Subtitle Studio lets you edit the text, retime cues by dragging, split or merge lines, and shift the whole track to fix sync, all in the browser.

Can I translate the subtitles?

Yes. Translate the caption track into another language while preserving the original timing, then export a separate file per language.

Ready to Get Started?

Try TranscriptAI free, no credit card required. Upload audio and get results in minutes.

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