New · AI Dubbing in 30+ languages

AI Caption Generator for Viral Shorts.

CaptionBolt turns long videos into viral clips with AI captions, speaker-tracked vertical cropping for TikTok and Reels, and dubbing in 30+ languages.

CaptionBolt AI video editor showing before and after comparison of viral short-form video with captions
READY TO POST
How It Works

Three steps. One workflow. Ship anywhere.

01

Upload a video or paste a YouTube link

Drop any footage: podcasts, interviews, phone clips. All formats work. Captions appear in seconds.

02

Let AI cut, caption, and crop for vertical

AI picks the viral moments, writes captions from 301 styles, and crops to vertical for TikTok and Reels, keeping the speaker in frame.

03

Export and post to any platform.

Download vertical MP4s ready for TikTok, Reels, and Shorts. Add dubbing to reach audiences in 30+ languages, all in one workflow.

Explore the workflow

Free online tools and creator workflows

Start with a quick browser tool, then continue into AI subtitles, transcription, clips, and publishing workflows when you need more.

Free online video and subtitle tools

Use CaptionBolt's free online tools to convert subtitles, edit captions, crop video, resize video, and export browser-ready files without installing software.

Auto Subtitle Generator for Videos

Generate AI subtitles and captions for videos. Create captioned clips for Shorts, Reels, TikTok, podcasts, and interviews with CaptionBolt.

Video to Transcript Generator for Creators

Turn videos into editable transcripts with CaptionBolt. Generate transcripts, captions, clips, and publish-ready content for YouTube videos, webinars, podcasts, and interviews.

Turn long videos into captioned short clips

Turn long videos into captioned clips for Shorts, Reels, and TikTok with CaptionBolt. Repurpose YouTube videos, webinars, courses, podcasts, and livestreams faster.

Turn podcast episodes into short clips

Create captioned podcast clips faster with CaptionBolt. Turn long podcast episodes and video podcasts into Shorts, Reels, TikTok clips, and guest highlights.

Interview transcription for captions, notes, and clips

Transcribe interviews and turn conversations into captions, notes, quotes, and clips with CaptionBolt. Built for video interviews, podcasts, webinars, and content teams.

Free Online Subtitle Editor

Edit subtitles online for free. Paste or upload SRT and VTT files, fix timing, sync subtitle lines, validate overlaps, and export SRT, VTT, TXT, or ASS.

A simple OpusClip alternative for captioned video clips

Looking for an OpusClip alternative? CaptionBolt helps creators turn long videos, podcasts, and interviews into transcripts, captions, and short clips. Plans start at $9/month.

AI Caption

Turn speech into styled captions in seconds.

Upload a video and CaptionBolt transcribes, times, and styles captions for shorts without manual subtitle work.

  • Automatically transcribe speech into editable captions.
  • Review every line in a synced transcript and timeline.
  • Apply short-form caption styles in one click.
AI Caption — automatically generate styled captions from video speech
AI Viral Clips — automatically extract top clips from long videos
AI Viral Clips

One long video. Multiple viral clips. Ranked.

Drop a podcast or interview. CaptionBolt's AI finds the viral moments, scores each clip, and hands you ready-to-post shorts.

  • Upload up to 60 minutes of podcasts, interviews, or live replays.
  • Every clip gets a viral score, so you post the strongest first.
  • Styled captions and vertical cropping applied automatically.
AI Reframe

Cropped for TikTok and Instagram. Speaker stays in frame.

Not a center crop. AI locks onto the speaker, follows faces frame by frame, and switches layouts when the scene changes.

  • Single-focus
    One person talking? The camera zooms in and tracks the face.
  • Split-screen
    Two people in dialogue? Stack them vertically so both stay visible.
  • Group-wide
    Multiple speakers? Pull wide so nobody gets cut off.
AI Reframe — smart face tracking for vertical video
AI Dubbing

One video. Every language.

AI translates and voices your video in any language. Captions stay in sync with the new audio.

EN
ES
FR
DE
PT
JP
30+ more
10 free minutes on signup

Sign up and get 10 minutes of dubbing, free. No card, one-time offer.

Claim 10 free minutes

Simple pricing for every creator

Start free. Upgrade when you need more styles, more minutes, or subtitle export.

Free

Try CaptionBolt risk-free.
  • 10 min of video / month
  • 5 caption styles
  • MP4 export with watermark
$0.00

Starter

For creators posting weekly.
  • 60 min of video / month
  • AI Captions · Viral Clips · Reframe · Dubbing
  • All 308 caption styles, no watermark
  • Up to 5-min videos
  • MP4 + TXT export
  • 10 GB storage
$6.00/month

billed $72.00/year · Save 33%

Most popular

Pro

For podcasters and high-volume creators.
  • 400 min of video / month
  • AI Captions · Viral Clips · Reframe · Dubbing
  • All 308 caption styles, no watermark
  • Up to 15-min videos
  • MP4 + SRT + ASS + TXT export
  • 50 GB storage
$12.00/month

billed $144.00/year · Save 37%

Max

For agencies and studios producing daily.
  • 1000 min of video / month
  • AI Captions · Viral Clips · Reframe · Dubbing
  • All styles + early access to new presets
  • Up to 60-min videos
  • All exports: MP4, SRT, ASS, VTT, TXT
  • 200 GB storage
  • Priority rendering queue
$25.00/month

billed $300.00/year · Save 36%

Questions creators ask

Straight answers about how CaptionBolt works.

Your first captioned short starts with one upload.

Free to start. No card needed.