Captn - Fix Auto-Generated Captions Once

Clean captions once. Publish them anywhere.

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Updated Jul 2026 · Added Jul 2026

captn.cc

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What is Captn?

Captn is an online subtitle editor that lets you upload videos or subtitle files (SRT, VTT), generate or import captions, and fix words and timing visually on a video preview. It solves the problem of auto-generated captions being incomplete drafts by keeping transcript, timing, style controls, and video preview together in one interface. Export cleaned subtitles as SRT, VTT, captioned MP4s, clips, green-screen captions, or translated versions without rebuilding captions for each format.

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Key Features of Captn

Visual subtitle editing with video preview
Generate captions from video
Fix text, line breaks, and punctuation
Sync subtitle timing
Style captions (fonts, colors, highlights, layout)
Create translated subtitle versions
Generate social clips from captions
Reframe clips for multiple aspect ratios
Export SRT, VTT, captioned MP4, clips, green-screen captions
Support for SRT and VTT file import

Who Should Use Captn?

Create publish-ready captions from auto-generated drafts

Prepare captioned videos for YouTube, Instagram, TikTok and Reels

Generate subtitle files for online courses

Create client review files with burned-in captions

Make short social clips from longer captioned videos

Translate subtitles for multi-language content

Captn: Pros & Cons

✓Pros

No installation required
Clean captions once and export to multiple formats
Visual editing eliminates timeline wrestling
Keeps transcript, timing, style and video preview together
Supports multiple export formats including social-ready clips
Translation feature for multi-language projects
Style controls for platform-specific requirements

Frequently Asked Questions about Captn

Can I upload an SRT or VTT file I already have and edit it in Captn?

Yes. Captn imports both SRT and VTT subtitle files, so you can load existing captions and fix their timing, text, and punctuation in the visual editor without starting from scratch. This is useful if you have captions from another tool or service that need cleanup before publishing.

What formats can I export captions in from Captn?

Captn exports as SRT, VTT, captioned MP4 video files, social clips, green-screen captions, and translated subtitle versions. You generate all these formats from one cleaned caption file, so you do not have to rebuild captions each time you need a different output for YouTube, Instagram, TikTok, or elsewhere.

Does Captn reframe clips automatically for different social platforms?

Yes. When you generate social clips from your captions, Captn can reframe them for multiple aspect ratios, so you can publish the same clip to platforms with different video dimensions without manual resizing.

What does the free plan include?

Captn does not publish specific limits for its free tier, but the plan covers basic subtitle editing and export. The paid tier unlocks longer video support, additional exports, translation features, and clip generation; check their site for current free plan boundaries before uploading a project.