DEDUPEDWho it is forCreator with a recorded talk or podcast clip who needs captions that look designed
The problemAuto-captions are plain, and styling them in an editor eats an evening.
The outcomeThe original footage with verbatim captions, or captions embedded behind the subject, rendered as a new MP4.
What you need first
- Node.js 22 or newer
- FFmpeg installed locally
- A coding agent that supports skills (Claude Code, Codex, Cursor, Gemini CLI, OpenCode and others)
- No GPU or paid API key is stated in the README for local rendering
Steps
- Install the skills with: npx skills add heygen-com/hyperframes
- Pick Core Skills and restart your agent.
- Run /embedded-captions and point it at your video file.
- Pick a caption style (verbatim rail, embedded climax, or pure-cinematic embed).
- Read through the rendered video and fix any misheard words.
Prompt for your agent
Use /embedded-captions from heygen-com/hyperframes on <video file> with a verbatim rail style. Verify the captions match what is said word for word.
Caveat. Caption accuracy depends on transcription of your audio, so noisy audio or names and jargon will need a manual proofread.
About hyperframes
Write ordinary HTML and get a rendered video out. Built so agents can make videos without a video model. View heygen-com/hyperframes on GitHub.
More with hyperframes
- Build an animated chart or stat clip for social Use the motion-graphics skill to make a short kinetic-type or chart-hit clip with no narration.
- Fix a date or price in a finished video by editing HTML Change one line of text in the source and re-render, instead of reopening a timeline editor.
- Make a 10-second product intro from one prompt Ask your coding agent for a short intro with a title, background video and music, and get an MP4 back.
- Turn a merged pull request into a changelog video Point the pr-to-video skill at a PR and get a short explainer of what shipped.
- Make a launch video from your product's website URL Give the product-launch-video skill a URL or brief and get a 30 to 90 second promo.
- Explain a topic in a faceless video from plain text Paste text and get an explainer built from typography, diagrams and data visuals, no footage needed.
- Build a pitch deck that is an interactive HTML deck Use the slideshow skill to make a navigable deck with fragment reveals and presenter mode.
- Turn a music track into a beat-synced lyric or promo video Feed the music-to-video skill an audio file and get a video whose pacing follows the beat.
- Add lower-thirds and pull-quotes to an interview recording Use talking-head-recut to layer titles, data callouts and quotes over an existing video.
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 [email protected] and we will look at it promptly. Full disclaimer page