Automatic caption generator

Automatic caption generator with true word-by-word sync

Zupum transcribes your video from the audio itself, then highlights each word exactly as you say it - the karaoke effect short-form audiences expect, generated automatically and burned into the export.

Captions that match the lips

Line-level subtitles drift and read as an afterthought. Zupum times captions at the word level from the audio, so the highlight lands on the spoken word rather than roughly near it.

  • Word-level timestamps from acoustic transcription, not guesses
  • 40+ caption styles across bold creator, clean and editorial looks
  • Custom fonts, sizes, colours, outlines and shadows
  • Drag captions anywhere in the frame; the position applies everywhere
  • Sync nudge slider for frame-level correction
  • Filler words like um and aah removed from both audio and captions

Styling is retention, not decoration

Pick a style before the edit starts or switch it mid-edit and watch the whole video restyle instantly - useful for testing which look holds your audience.

The same transcript powers the rest of the edit

B-roll placement, sound effects and hook text all come from the same transcript, so your captions and visuals reinforce each other instead of being two separate jobs.

Generate captions now

Open the Zupum studio, upload a clip and captions appear with the first AI pass.

editing hours saved by Zupum

22,077hours

Time creators would have spent on B-roll, captions, music and clean-up - handed back to them.

inside the studio

Everything you get,
straight from the editor.

Flip through the real caption library: 40+ styles, custom fonts and colours, outlines and shadows, plus drag-to-position and a sync nudge for frame-level accuracy.

B-roll art styles

AI

Pick the medium your AI cutaways are generated in - photo, doodle, clay and more.

AI
Cinematic photo B-roll style examplePhoto-real, shallow depth of field
Cinematic photo
AI
Doodle / whiteboard B-roll style exampleHand-drawn notebook explainer
Doodle / whiteboard
AI
Paper cutout B-roll style exampleLayered papercraft collage
Paper cutout
AI
Plastic / inflatable B-roll style exampleGlossy vinyl toy render
Plastic / inflatable
AI
Chromatic chrome B-roll style exampleIridescent liquid metal
Chromatic chrome
AI
Claymation B-roll style exampleStop-motion plasticine
Claymation
AI
3D isometric B-roll style exampleMiniature 3D diorama
3D isometric
AI
2D flat vector B-roll style exampleEditorial geometric shapes
2D flat vector
AI
Retro neon B-roll style exampleSynthwave grid and glow
Retro neon
AI
Anime cel B-roll style exampleCrisp cel-shaded frame
Anime cel

Behind the Person

AI

Big statement text rendered behind the speaker with a live cut-out.

pro
IDEA
Monument
IDEA
Golden Hour
IDEA
Ghostline
IDEA
Lime Swipe
pro
IDEA
Crimson
IDEA
Sunburst
Idea
Spray Line
Idea
Editorial
pro
IDEA
Neon Edge
IDEA
Depth Stack
IDEA
Blueprint
IDEA
Yellow Band
pro
IDEA
Retro Print
IDEA
Street Tag
Idea
Soft Whisper
IDEA
Tall Stack

Caption styles

AI

Word-synced presets, from clean social to loud creator.

new
Goodthingstaketime
Luxe Stack
Goodthingstaketime
Mono & Hand
Goodthingstaketime
Retro Lettering
creator
Goodthingstaketime
Clean Signature
Goodthingstaketime
News & Script
new
Goodthingstaketime
Candy Stack
creator
Goodthingstaketime
Soft Serif
Goodthingstaketime
Marker Headline
Goodthingstaketime
Magazine Pop
creator
Goodthingstaketime
Loud Whisper
new
Goodthingstaketime
Blueprint Mix
Goodthingstaketime
Pink Letter
creator
Goodthingstaketime
Bold Note
Goodthingstaketime
Editorial Script
Goodthingstaketime
Good Things
new
JustlikeTHIS
Classic
JustlikeTHIS
Hormozi
JustlikeTHIS
Viral Purple
creator
JustlikeTHIS
Acid Lime
JustlikeTHIS
Chip Black
new
JustlikeTHIS
TikTok White
creator
JustlikeTHIS
Karaoke Mint
JustlikeTHIS
Yellow Slab
JustlikeTHIS
Neon Glow
creator
JustlikeTHIS
Bubblegum
new
JustlikeTHIS
Beast Pop
JustlikeTHIS
Spotlight Word
creator
JustlikeTHIS
Kinetic Kanit
JustlikeTHIS
Editorial Serif
JustlikeTHIS
Minimal Thin

Colour grades

Film looks applied to the preview and the export identically.

Clean pro
Teal & orange
Warm film
Cool noir
Vivid pop
Mono contrast
Vintage fade
Golden hour
Cyber neon
Pastel matte
Bleach bypass
Moody dark
Sepia doc

Background plates

Swap the room for a solid or gradient, for the whole clip or a few seconds.

Ink
Slate
Studio grey
Bone
Chroma green
Cobalt
Cherry
Butter
Dusk
Sunset
Mint
Grape
Peach
Steel
Aurora
Ember
Spotlight
Paper

Music & sound design

AI

Scored automatically, then matched with sound effects on every cut.

AI
Uplift - score
AI
Calm - score
AI
Cinematic - score
AI
Drive - score
Whoosh
Fast swoosh
Riser
Downlifter
Reverse cymbal
Tape stop
Cinematic impact
Sub boom
Snare hit
Punch
Glass shatter
Pop
Click
Ding

Transitions

30 cuts, wipes, whips and glitches - auto-placed, then yours to tune.

Standard cut
Jump cut
Cross dissolve
Fade to black
Fade to white
Flash cut
Wipe left
Wipe right
Wipe up
Wipe down
Barn door
Iris circle
Clock wipe
Slide left
Slide right
Push up
Push down
Zoom in
Zoom out
Whip pan
Try it on your clip
see zupum in action
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questions

Frequently asked

Are the captions word-synced or line-by-line?

Word-synced. Timings come from acoustic transcription, so each word highlights exactly as it is spoken instead of a whole line appearing at once.

How many caption styles are there?

Over 40, spanning bold creator looks, clean minimal subtitles and editorial styles, with control over font, size, colour, outline and shadow.

Can I move the captions?

Drag them up or down in the preview and the position applies across the whole video. A sync nudge slider handles frame-level correction.

Do captions get burned into the export?

Yes - captions are rendered into the exported MP4, MOV, WebM or MKV so they display everywhere you post.

Upload a clip. Get a finished edit.

Free to start, no credit card, no timeline to learn.

Caption my video