Now in Open Beta

Studio-grade captions.
Zero learning curve.

Automated transcription, semantic subtitle styling, stock footage and splicing, harnessed in a full editing suite running entirely in your browser.

ai-subtitle-studio.pages.dev
AI Subtitle Studio editor with timeline, media browser, and subtitle tools
Post more often

Turn hours of editing into minutes. AI handles transcription, styling, B-roll, and music. You just approve.

Look like a pro

Viral subtitle styles, karaoke word-highlighting, auto-emoji, and semantic emphasis. Professional polish, minimal effort.

Grow your audience

80% of mobile video is watched on mute. Good subtitles are the difference between scroll-past and watch-through.

AI Auto Enhance

One click. Entire edit done.

Auto-Enhance watches your video with multimodal AI and builds the edit for you: B-roll footage, reaction GIFs, background music, and animations generated with the Remotion engine. Choose a style and hit go.

Auto B-Roll

AI fetches relevant stock footage from Pexels and inserts it at semantic breakpoints. Control density (sparse to dense) and relevance style (literal, thematic, abstract, or ironic).

Auto GIFs & Reactions

Pulls reaction, meme, and illustrative GIFs from Klipy, placed as fullscreen cutaways or picture-in-picture overlays. Timed to punchlines and emotional beats.

Auto Music

CC-licensed tracks from Pixabay and Archive.org, matched to your content by genre and energy level. Handles volume ducking, fade-ins, and placement.

Auto Animations

AI generates animated overlays (text callouts, counters, shape animations) as React components, rendered with spring physics and easing curves.

10 curated enhancement styles

Corporate Documentary Cinematic Podcast Educational TikTok Brainrot Vine Reddit Essay

Multimodal AI

AI watches your video.
Then styles every word.

Semantic Highlighting reads your video, your vocal emphasis, and your emotional tone at the same time. Then it picks out the words that matter most in every sentence: the action verbs, the key nouns, the contrasts, the punchlines.

Per-word styling : highlight color, pop/shake/glow effects, size scaling, bold and italic
Auto-Emoji : context-aware emoji placed at trigger words. Density goes from subtle (1 per 5 subs) to heavy (every subtitle)
Creator personas : Hormozi (aggressive authority), MrBeast (hype energy), Ali Abdaal (educational flow)
Live preview

When you have a BAD day,

don't just give up. 💪

Go home, rest, and try again. 🔥

Multimodal analysis: video + audio + text
AI splice analysis
Hook intro
um...
Main point
silence
Conclusion
After AI splice
Hook intro
Main point
Conclusion
Removed: ums, silences, false starts Kept: hook, key points, CTA

AI Splicing

Remove the dead air.
Keep the good parts.

AI finds and cuts the silences, the filler words ("um", "uh", "like"), the false starts, and the tangents. Your hook stays intact, and every cut lands on a natural edit point.

Style-aware aggressiveness: Corporate cuts 20% of filler. Brainrot cuts 95%. TikTok and Vine auto-enabled.
Transition styles: hard cut, dissolve, or J-cut (audio leads video) at each splice point.
Hook preservation: your opening sequence is always kept intact.

And More

Everything else you'd expect.

Cloud & On-Device Transcription

Parakeet TDT V3, frequently rated #1 on the Hugging Face ASR leaderboard, runs entirely in your browser, able to transcribe minutes of audio in seconds with Word-level timestamps. Otherwise, utilise our cloud AI models for consistent and accurate outputs.

Karaoke Word Effects

Spotify-style word wipes, pop animations with spring physics, or simple color highlights. Each word lights up as it's spoken.

AI Animation Generator

Describe an animation in plain English. AI generates a React component with spring physics, easing curves, and auto-created UI controls.

Rich Text Editor

Intuitive subtitle editing, just like you would in a word processor. Bold, italic, fonts, colors, sizes, and highlights all work per-word. Switch to FX mode to add karaoke wipes, pop, shake, and glow effects.

12+ Language Translation

Batch-translate all subtitles at once. Word-level timestamps are preserved and redistributed to translated text automatically.

Export Up to 4K

Render video with burned-in subtitles via WebCodecs, or export clean SRT/VTT files. Supports MP4, WebM, and MOV up to 4K.

The Editor

A full editing suite.
In your browser tab.

1

Multi-track Timeline

Frame-accurate clips, visual waveforms, drag-to-trim. Subtitles, media, and design layers all live on the same timeline.

2

Rich Text Editor

Edit subtitles the way you'd edit a document. Full formatting toolbar with per-word font, color, size, and highlighting. FX mode adds karaoke wipes, pop, shake, and glow when each word is spoken.

3

Built-in Stock Media

Pexels videos, Klipy GIFs, and Pixabay music. 21 content categories you can browse and drop straight onto your timeline.

Editor timeline and design layers

How It Works

Three steps. That's it.

Drop your video

MP4, MOV, or WebM. You can also browse stock footage from Pexels. Nothing gets uploaded to our servers.

Hit Auto-Enhance

AI transcribes, styles subtitles, inserts B-roll, adds music and GIFs, removes dead air. Pick a style and go.

Export & post

Render up to 4K with burned-in subtitles, or export SRT/VTT. Upload to YouTube, Reels, TikTok.

Pricing

Start free. Scale when ready.

No credit card. No trial expiry. Upgrade only when you need more.

Free

No account needed

£0 /forever
  • Unlimited on-device transcription
  • Per-word styling & karaoke effects
  • 10+ built-in design templates, or create your own
  • 3 AI credits per tool / week
  • Export up to 1080p / 60fps
  • SRT / VTT export (watermarked video)
Get Started
Power User

Pro

For power users

£12.99 /mo £14.99 launch price
  • Everything in Creator, plus:
  • Unlimited multimodal AI
  • Multimodal semantic styling
  • AI auto-enhance (B-roll, GIFs, music)
  • Multimodal cut validation
  • Priority export queue
Go Pro
AI Subtitle Studio

Your next video, done faster.

Professional subtitled content in minutes instead of hours. Free to start, no credit card required.