{
 "schema_version": 1,
 "generated": "2026-10-26",
 "id": "jub0t-concat--caption-short-videos-offline",
 "repo": "jub0t/Concat",
 "repo_url": "https://github.com/jub0t/Concat",
 "repo_slug": "jub0t-concat",
 "title": "Add styled auto-captions to Shorts and Reels, fully offline",
 "page_title": "How to add styled auto-captions to Shorts and Reels, fully offline with Concat",
 "summary": "Install Concat, download a Whisper model once and get styled captions on the timeline without uploading footage.",
 "who": "A creator who posts short vertical videos and wants captions without paying for a subscription or uploading clips.",
 "problem": "Popular editors put captions behind accounts, watermarks or cloud uploads.",
 "outcome": "Captioned videos exported up to 4K with no watermark, made entirely on your own machine.",
 "steps": [
  "Download Concat from the website or GitHub Releases for your platform",
  "On macOS, if an unsigned build will not open, run `xattr -dr com.apple.quarantine /Applications/Concat.app`",
  "Download a caption model size once from Settings",
  "Drop in your footage and generate auto-captions; style them with title presets",
  "Export as H.264, HEVC or AV1"
 ],
 "agent_prompt": "Help me caption <video> in jub0t/Concat: pick a Whisper model size that fits my machine, generate captions, suggest a readable caption style for vertical video, and export at 1080x1920.",
 "agents": [
  "any"
 ],
 "difficulty": "Beginner",
 "time": "20 minutes",
 "basis": "readme",
 "caveat": "Concat is in beta, and Windows builds are not signed yet, so SmartScreen may warn on install.",
 "category": "Content",
 "tags": [
  "Content"
 ],
 "lang": "rust",
 "requirements": [
  "macOS, Windows, Linux or Android (iOS sideloaded)",
  "AI models for captions, voices and cutout download once from Settings, then work offline",
  "To build from source: Rust 1.93+, FFmpeg 7+ development libraries, cmake and a C++ compiler"
 ],
 "risk": "none",
 "seen_in_the_wild": false,
 "mentioned_publicly": false,
 "risks": [],
 "best": true,
 "score": 1.0,
 "evidence": [],
 "url": "https://dedupedai.com/use-cases/jub0t-concat/caption-short-videos-offline/",
 "md": "https://dedupedai.com/use-cases/jub0t-concat/caption-short-videos-offline/index.md",
 "disclaimer": "Deduped lists open-source repositories that belong to other people. We do not own, maintain, audit, or vouch for any of them, and a repo appearing here is not an endorsement or a safety check. The use cases, steps, and prompts are written by AI and may be incomplete, outdated, or just wrong. Where a use case is marked \"Seen in the wild\", we link to public posts where someone described something similar, but we have not verified those posts and the use case itself is still our AI's own write-up. Use all of this at your own risk. Only run code, commands, or agents on systems and accounts you are authorized to use, and read the code and every command before you run it, especially anything that touches credentials, files, or the network. Nothing here is professional, security, legal, or financial advice. All trademarks and project names belong to their respective owners, and their use here does not imply affiliation. Content is provided as is, without warranties of any kind. Found a mistake, a safety problem, or something you want removed? Email hello@dedupedai.com and we will look at it promptly.",
 "api": "https://dedupedai.com/api/v1/usecases/jub0t-concat--caption-short-videos-offline.json",
 "api_version": "v1"
}