Caption studio

Finish the reel without starting over.

Open a generated reel on a real timeline: cut what drags, reorder scenes, style captions word by word, layer in music and voiceover, then re-render the exact same footage with your edits.

  • Trim + reorder scenes
  • Word-by-word karaoke captions
  • Re-render, never regenerate

Caption studio, Caption Studio is SocialCTL's timeline editor for generated reels: trim and reorder scenes, style word-by-word karaoke captions with animated presets, add layers, music, transitions and voiceover, then re-render the same video with your changes applied. It edits the reel you already made, reusing your footage instead of regenerating it.

Scene-level control

Trim, reorder and retime the scenes of a generated reel on a familiar timeline.

Karaoke captions

Captions highlight word by word in sync with the audio, with animated styles to pick from.

Layers and audio

Add overlay layers, music and voiceover on their own tracks, timed independently of the scenes.

Edit, then re-render

Your footage stays; your edits apply.

Caption Studio never throws away the video you generated. Every change, from a trimmed scene to a restyled caption, is applied to the existing footage and rendered again as a fresh MP4. That makes editing safe: the shot you liked is still the shot you get.

  • Same footage — Re-render reuses your clips; it never regenerates them.
  • Precise cuts — Trim and reorder scenes exactly, down to the moment.
  • Captions in sync — Caption timing follows your edits, so cut scenes never leave stray words.

Everything on the timeline.

Karaoke captions

Word-by-word highlighting synced to the voice, in animated styles.

Overlay layers

Text, stickers and graphics on their own layer track, at absolute times.

Voiceover

Add or replace narration without touching the visuals.

Music

Lay a music track under the reel and balance it against the voice.

Transitions

Pick how scenes hand over to each other.

Real re-render

Export a genuine MP4 of the edited reel, ready to schedule.

A reel, polished in four steps.

1

Open the reel

Any generated reel opens straight onto the timeline.

2

Cut and reorder

Trim slow moments and rearrange scenes until the pacing lands.

3

Style the captions

Choose an animated caption style and adjust the word timing where needed.

4

Re-render and ship

Render the same footage with your edits, then schedule it out.

Made with SocialCTL

Real output, not stock

Every frame below was generated by SocialCTL from a brand kit and a one-line brief. No stock library, no shoot.

Reel / Short Video YT Short: 71% claim AI agents. 11% shipped.
Carousel The real cost of "free" self-hosting
DevOps is optional in 2026
Static Post DevOps is optional in 2026

Frequently asked.

Does re-rendering change my video?
Only in the ways you edited. Re-render applies your trims, captions, layers and audio to the same footage you already had. It never regenerates the underlying clips, so nothing you liked gets replaced.
What are karaoke captions?
Captions that highlight word by word in time with the audio, the style short-form viewers expect. You pick from animated caption styles and can adjust the timing per word.
Can I change the audio without touching the visuals?
Yes. Music and voiceover live on their own tracks, so you can add, replace or rebalance audio and the scenes stay exactly as they are.
What are layers?
Independent overlay elements, such as text or graphics, placed at absolute times on their own track. They sit on top of the scenes and survive scene edits underneath them.
How is this different from the reel editor?
The reel editor is for assembling a video from clips and tracks. Caption Studio is for finishing a reel you already generated: scene edits, caption styling and a faithful re-render of the same footage.
Deep dive Read the complete guide

Your first calendar is on us.

No card. See what a month of content for your business looks like in 60 seconds.

Build my free calendar