How to add subtitles to a video with AI

Generate captions for a video automatically, translate them, and fix the few words AI gets wrong.

Easy About 10 minutes Free option Works on phone Updated 27 Oct 2026

Fixi's verdict: Fixable

Auto captions are accurate on clear speech. Names and technical words need checking.

The problem

Most people watch short videos with the sound off, and typing subtitles by hand takes far longer than the video itself. AI transcribes the speech and times each line for you.

Best AI tools for this

Ranked by how well they fix this problem. Free options first when results are close.

1 tool

CapCut Top pick

Free auto captions on web, desktop and phone. Detects the language and can translate.

WebDesktopPhone

Free plan Pricing source
Open

Fix it in 4 steps

1 Open CapCutUse the web editor, desktop app or phone app, and sign in with a free account.
2 Import your videoAdd the video to a new project.
3 Generate captionsRun auto captions. CapCut detects the spoken language.
4 Fix and exportRead through the captions, correct names and numbers, then export.

What AI can't fix here

Heavy accents, background music or several people talking at once lower accuracy.
Names, brands and technical terms are often misspelled. Always proofread.

Questions

Can I translate subtitles too?

Yes. CapCut can translate generated captions into another language. Check the translation if it matters.