Subtitle AI
TC 10:00:00:00
PGM · 1920×1080 · 25pEN · Default preset · 42 CPL · 2 linesEN · Custom · 20 CPL · 3 lines

Turn any video
into
broadcast-ready
subtitles.

#00110:00:00:00 → 10:00:03:0512.8 CPS

Subtitle AI transcribes your footage, then breaks every line, times every cue and checks reading speed against your house rules. Translate into 60+ languages, review at keyboard speed, and export EBU-STL, SRT or burned-in video.

Talk to usStart free
Transcription accuracy
98.7%
Editing
4× faster than typing
Languages
60+
Users
5,000+

Used by teams at

  • VRT
  • EMG
  • Woestijnvis
  • Banijay
  • DPG Media

Every line
broken right.
Every cue on time.

Transcription is the easy part. The work is in the formatting: where a line breaks, how long a cue stays up, whether anyone can read it in time. Subtitle AI does that part too, to your rules. Switch presets and watch the same interview re-cut.

10:00:00:16
Welcome back.
TC 10:00:00:1642 CPL · 2 lines
6 cues · longest line 42/42 · 5 ok · 1 fastSample dialogue · generated timings
Line length
42 characters by default. Set anything from 20 up, per project or as a saved preset.
Lines per cue
Two by default, three for podcasts, up to four in a preset of your own.
Reading speed
Every cue is checked in characters per second, spaces excluded, and flagged when it runs fast.
Timing
Three frames between cues by default, with optional minimum and maximum durations.
Speakers
A new speaker gets a dash, so two short turns can share one cue.
Vocabulary
Names, places and jargon spelled your way, from a custom vocabulary.

Documentaries,
news clips,
radio shows
and archives.

TC 10:47:12:08EBU-STL · 25 fps
What's in the box?

Deliver a film or documentary to spec

Upload the master, set your house rules once (42 characters, two lines, three-frame gaps, or whatever your broadcaster asks for) and get a timed draft that already follows them. Your subtitler reviews it with hotkeys instead of typing from zero, then exports EBU-STL for playout and SRT for the web in one go.

In
Video or audio master
Rules
Your preset: CPL, lines, gaps
Out
EBU-STL · SRT · TTML

Illustrative sample · stills and file names are examples

The AI drafts.
You sign off,
at the speed
of your keyboard.

Every cue shows its reading speed and line lengths while you edit. Move cue to cue or word to word, set in and out points and add cues at the playhead without reaching for the mouse. It's 4× faster than typing subtitles by hand.

app.subtitle.ai/demoSaved
The Subtitle AI editor: a cue list showing reading speed and line lengths per cue, the video player, and a waveform timeline with cue blocks.
The editor in the public demo project. Style, highlights and chapters sit in the tabs beside the player.

Hotkeys

Play or pause
Esc
Jump 5 seconds
⌘← →
Seek precisely
Shift← →
Previous or next cue
⌘↑ ↓
Previous or next word
Shift↑ ↓
Set in point
⌘ShiftI
Set out point
⌘ShiftO
New cue at the playhead
⌘Enter

⌘ is Ctrl on Windows and Linux.

Open the demo project, no account needed

Delivered
in the format
your playout
expects.

Export several formats in one go, shift every timecode by an offset, or put two languages in one file. Dozens of projects leave as a single zip.

  • SRTSubRipWeb players, YouTube, most editing tools
  • VTTWebVTTHTML5 players and streaming
  • STLEBU-STLBroadcast playout
  • TTMLTimed TextBroadcast and OTT delivery
  • ASSSubStation AlphaStyled subtitles
  • MP4Burned inH.264 at 16:9, 1:1, 9:16 or 4:5
  • DOCXWordTranscripts, with or without speakers
  • PDFTranscriptReview and sign-off
  • TXTPlain textScripts and search
  • JSONStructuredYour own pipeline
  • XMLStructuredYour own pipeline
  • CSVChaptersChapter marks with timecodes

64 languages, in and out.

Transcribe in any of them and translate into any of them. Not sure what is being spoken? Autodetect. Several languages in one recording? Multilingual mode.

See plans and limits
  • English
  • Spanish
  • French
  • German
  • Italian
  • Portuguese
  • Russian
  • Japanese
  • Korean
  • Chinese (Simplified)
  • Chinese (Traditional)
  • Arabic
  • Indonesian
  • Bengali
  • Urdu
  • Persian
  • Afrikaans
  • Hindi
  • Thai
  • Vietnamese
  • Turkish
  • Polish
  • Dutch
  • Swedish
  • Danish
  • Norwegian
  • Finnish
  • Hebrew
  • Greek
  • Czech
  • Slovak
  • Hungarian
  • Romanian
  • Bulgarian
  • Croatian
  • Serbian
  • Ukrainian
  • Lithuanian
  • Latvian
  • Estonian
  • Slovenian
  • Maltese
  • Icelandic
  • Irish
  • Welsh
  • Basque
  • Catalan
  • Galician
  • Malay
  • Filipino
  • Tamil
  • Telugu
  • Malayalam
  • Kannada
  • Marathi
  • Gujarati
  • Punjabi
  • Kazakh
  • Azerbaijani
  • Albanian
  • Bosnian
  • Macedonian
  • Belarusian
  • Swahili

Your footage
stays yours.

What happens to your uploadsData processing agreement
Stored in the EU
Your files, database and our servers are in Paris, and our main speech-recognition provider works in the EU.
Deleted when you say so
Deleting a project removes the original and every file made from it.