DEDUPEDWho it is forMarketing manager whose launch date just moved from Friday to Monday
The problemA last-minute text change in a launch video usually means reopening a project and re-exporting by hand.
The outcomeThe same animation re-rendered locally as a new MP4 with the corrected text.
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
- Open the HyperFrames project folder your agent created for the video.
- Ask the agent to change the text (for example Friday to Monday) in the HTML.
- Have the agent re-render the video locally.
- Play the new MP4 and confirm the animation timing is unchanged.
Prompt for your agent
In my HyperFrames project for <video name>, change the text '<old text>' to '<new text>' and re-render the MP4 locally. Verify the animation timing matches the previous render.
Caveat. This only works if the video was built as a HyperFrames HTML project, so an MP4 made in another editor cannot be changed this way.
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.
- 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.
- Add designed captions to a talking-head video Overlay styled subtitles on existing footage without touching the original video.
- 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
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