LogoLongStories.ai
HomeHome
How?How It WorksCreatorsFor CreatorsPricingPricing
LoginSign Up
Resources / Edit a video

Change words, captions, and voices after generation

Edit a spoken line, a caption, or a speaker's voice in a finished video, then render it again.

Reviewed 2026-09-25

You can change the spoken words and the captions of a finished video in the editor. Then render it again to put the changes in your file.

Find the lines

  1. In My Videos, select Edit on the video. Or open the video and select Edit Video.
  2. Find the card with the line. Move the pointer over it to see its tabs Shots, Script, and Voiceover.
  3. Select Voiceover. It lists each spoken line of the card with its speaker. The Script tab is read only.

Change a spoken line

  1. Move the pointer over the line. On a phone or tablet, its buttons always show.
  2. Select the pencil button with the tooltip Edit line.
  3. Change the words, then select Regenerate. The cost shows next to the button.

Other line buttons:

  • Regenerate line makes new audio with the same words. Its tooltip shows the cost.
  • Delete line removes the line.
  • Add line adds a new line to the card.

A lock icon on a line means a shot is lipsynced to it. The app asks you to confirm a change. After it, make that shot's video again with Re-animate. See Fix one shot.

Change a caption only

Each line has its caption under it, next to Captions.

  1. Move the pointer over the line and select the pencil button with the tooltip Edit caption.
  2. Change the text and select Save.
  • This changes only the words on screen. The audio and the timing stay the same.
  • Reset to spoken words shows the spoken words again.
  • The switch next to the caption turns captions on or off for this line.

To change how captions look, open Project settings and select Captions.

Change a speaker's voice

  1. Select Project settings at the top left. On a phone, it says Project.
  2. Select Change Voices.
  3. If the video has more than one speaker, choose the speaker.
  4. Play voices to hear them, then choose one.
  5. Select Change voice. The cost shows on the button.
  • Every line of that speaker gets the new voice. Lines you add later use it too.
  • The lip sync and the timing of these lines can change. You cannot undo a voice change.
  • You can close the window while the change runs.
  • If your plan cannot change voices, the window shows Upgrade to change character voices.

Put the changes in your video

Select Preview at the top right to watch them. To update the saved video, select Export, then Render video, or select Update video on the video page. See Download and export your video.

Related guides

  • Why a video has still images
  • Download and export your video
  • Add, move, and remove shots and cards
  • Change timing and sound on the Card timeline
  • Add a character, location, or object to a video you made
  • Fix one shot
  • Animate a storyboard
  • Use your own images in a video
  • Upscale a video to a higher resolution
  • Remove the LongStories watermark
  • Contact support
LongStories.ai

Product

  • Pricing
  • How It Works
  • Create
  • Watch

AI Video Generators

  • AI Music Video Generator
  • Long AI Video Generator
  • AI Animation Generator
  • AI Animation Maker
  • AI Anime Video Generator
  • Consistent Characters
  • Pixar-Style AI Video Generator
  • Cartoon AI Video Generator

More Generators

  • Script to Video Generator
  • AI Documentary Generator
  • AI Kids Video Generator
  • AI Horror Video Generator
  • AI Explainer Video Generator
  • AI Bedtime Story Generator
  • AI Sci-Fi Video Generator
  • AI Fantasy Video Generator
  • AI Comic Book Video Generator

Resources

  • Blog
  • FAQ
  • Tutorials
  • Resources
  • API
  • Story Analyzer

Legal

  • Privacy
  • Terms

Help

  • Discord Community
  • Help Center

Social

  • Reddit
  • X (Twitter)

Partners

  • Affiliates
  • Nano-GPT.com
Copyright © 2026 LongStories.ai - AI-powered story generation platform
Privacy PolicyTerms of ServiceHelp