KatKut AI: Captions & B-Roll

Sanjaya Bhattarai

Contains ads

About this app

KatKut AI adds auto captions, auto B-roll and emoji to any talking-head video — in your own language, or translated into another — and turns a pile of short clips into a finished reel. Everything is cut and exported on your phone.

AUTO CAPTIONS IN 69 LANGUAGES
Record yourself talking. KatKut transcribes every word with word-level timing and burns the captions (subtitles) into the video — no typing, no syncing. English, Nepali, Hindi, Spanish, Finnish, Japanese, Arabic and 62 more sit in the same list. Auto captions in your language are the default, not a setting to hunt for.

• Native or roman script — the same words in your choice of letters. "कहाँ जाने" or "kaha jane", for viewers who read the language but scroll in Latin.
• Word-timed — captions arrive with your voice, not a second late.
• Emoji that fit — chosen per line, country flags included, one toggle to hide them all.

TRANSLATE CAPTIONS INTO ANY OF 69 LANGUAGES
Speak in one language, caption in another. Record in Hindi and post with English captions; record in English and reach viewers in Spanish. Translation is off by default and one switch away, so nothing is rewritten unless you ask.

AUTO B-ROLL, CHOSEN BY MEANING
Say it, and the footage appears. KatKut's AI reads what you mean — not just the words you said — and cuts in stock B-roll exactly where your speech calls for it. Say "the Himalayas" in Nepali and get the Himalayas, not a generic hill. Auto B-roll cutaways are capped so your video stays yours, and your voice carries through every one of them.

• Reaction cards and stickers — a framed reaction clip in the corner or a symbol on screen at the moment your voice earns it, while you stay on camera.
• Every cutaway is trimmable, movable and deletable.

10 CAPTION STYLES, 5 ANIMATED WORD BY WORD
Word Pop, Karaoke, Kinetic Box, Focal Pop and Accent Burst animate each word as you speak. Set position, size, colour and font once for the whole video.

EDIT, THEN EXPORT ONCE
A real timeline with three tracks: B-roll, your footage, captions. Trim, move, retime, rewrite any caption, undo and redo everything. The preview updates live — nothing is re-encoded until you press Export. Then export at source quality: 1080p, 1440p or 4K, 30 or 60 fps, hardware-encoded, captions burned in with a proper outline.

AUTO REEL MAKER — 40 CLIPS IN, ONE REEL OUT
Shot dozens of 2–5 second clips across a day? Drop them all in. KatKut scores every clip for sharpness, exposure, motion and sound, keeps the good moments, and sequences them into a 60–120 second vertical reel.

• 8 vibes — Balanced, Snappy, Relaxed, Food & Cooking, Travel & Adventure, Mini Vlog, Unboxing & Style, or Auto.
• Smart audio — mutes the noise, keeps the moments where sound is the point: music, cheering, a street performer.
• Photos too, with gentle motion.
• No black bars, no harsh crops — landscape clips sit centred over a blurred, enlarged copy of themselves.
• Rough cut in seconds, then trim, reorder, mute or delete in the strip. Finish with voiceover and music in your favourite editor.

YOUR VIDEO STAYS ON YOUR PHONE
Reels are analysed, cut and exported entirely on-device. Nothing is uploaded. For auto captions, exactly one thing leaves your phone: a small audio-only extract, so it can be transcribed. Your video never does. B-roll is downloaded to you, never the other way round.

FREE AND PRO
Free is the whole app: every reel vibe, auto captions and auto B-roll with 4 minutes of transcription a month on videos up to 60 seconds, exports with a small watermark, and ads. On reels, watch one short ad and that export goes out clean — no limit, no sign-in.

KatKut Pro removes the ads and the watermark, raises Studio to 120 minutes a month on videos up to 5 minutes, and exports faster.

Built for creators who post talking-head videos, vlogs, shorts and reels — and would rather record than type captions. Questions? [e-mail]

Privacy Policy: https://katkut.app/privacy-policy

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