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    Codereel

    1

    Turn code into promo videos: real app UI, cuts on the beat, and one command to re-render when the copy, size or track changes.

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    Codereel

    Codereel

    Example session with this skill installed

    Create a 30s 9:16 reel for our new dashboard. Use a 128 BPM grid, Apple-style big type, and real UI footage. Provide three audio variants.

    • Read your context and instructions
    • Compiled the codereel
    • Generated the image

    Built the dashboard reel as code. film.html holds the timeline: renderAt(ms) drives every layer and cuts land on the 128 BPM grid (one beat = 468.75 ms). cuts.txt and hits.json list the cut and hit points for the audio.

    AssetDetails
    Video1080x1920, 30 fps, H.264, yuv420p, 30.0 s
    Audio A / B / Cupbeat electronic / minimal tech / cinematic piano, about -14 LUFS each
    SFXsynthesised taps and chimes on the hit points
    QAffprobe clean, no black or frozen stretches, OCR of sampled frames: no typos
    nice -n 10 node render.mjs
ffmpeg -i silent.mp4 -i mix-A.wav -c:v copy -c:a aac -b:a 192k -af loudnorm=I=-14:TP=-1.5 -shortest promo-A.mp4

    Delivered: three MP4 versions, the silent master, a cover image, captions and LICENSES.md.

    Next steps

    1. Watch the three versions and pick one.
    2. Tell me any copy, timing or track change; I edit the line and re-render.
    3. Nothing is re-rendered until you give direction.

    shot-18900

    film.html

    PNG · 1536×1024

    Generated

    Example file from a real run - the skill writes it into your workspace.

    Connects securely to your tools. The creator never sees your data.

    About this skill

    Your app is great, but the demo video stutters, eats a weekend in an editor, and has to be redone for every small change. Ask your agent for "a 30 second promo for the app" and Codereel builds the video as a web page: every layer is a function of time, cuts land on the beat, and Playwright renders it frame by frame into an MP4 with music and sound effects mixed in.

    Why it's different

    • Real UI, never AI guesses: footage comes from your production build or approved posters, so buttons and text look exactly like the product.
    • Change a line, render again: new copy, new aspect ratio or new track is one edit and one command, with the same frames every time.
    • No credits, no licence fees: plain HTML, Playwright and ffmpeg; music composed in code or a track you have the rights to.
    • Built from real projects: 16 pitfalls that actually happened, each with its guard.

    What it does

    • Timeline in code: renderAt(ms) drives every layer, with cuts on a 120 or 128 BPM grid and a seeded random source so re-renders match.
    • Multi-format output: MP4 in 9:16 and 16:9, 7 to 60 seconds, plus GIF export for stickers and chat previews.
    • Audio in versions: 2-3 music options with SFX on the hit points, ducked and normalised to about -14 LUFS, with a LICENSES.md.
    • QA before delivery: ffprobe checks, black and frozen frame detection, and OCR of sampled frames for typos and stale numbers.
    • Style variants: Apple-style commercial rules (one idea per shot, one hero colour, hook in the first 3 s), poster reels and generative backgrounds.

    How it works

    1. Concept first: duration, aspects, style, BPM grid, scene list and CTA agreed before anything renders.
    2. Footage: real app capture from a production build, with IDs scrambled and dates frozen.
    3. Film: film.html with a time-driven timeline; cut and hit points exported for the audio.
    4. Render and mix: Playwright seeks each frame into ffmpeg, then the audio versions are muxed without re-encoding the video.
    5. QA and handoff: contact sheet, OCR and probe checks, then the owner picks a version.

    Frameworks & tools

    Node.js, Playwright, ffmpeg and optionally GSAP. Python with numpy/scipy for music and SFX composed in code. Tesseract for the OCR pass if installed.

    Use cases

    • App intros and feature launches with real UI and beat-synced type.
    • Weekly social reels made from approved posters, no new shoot.
    • One campaign exported to 9:16 and 16:9 from the same source.
    • Quick re-cuts when pricing, copy or the soundtrack changes.

    Known limitations

    Needs Node.js, Playwright and ffmpeg on your machine. Not for live-action, interview or talking-head editing, and it does not generate AI footage.

    How to use

    Skills on Agensi run inside your AI agent. Copy the prompt, paste it into your agent, and it connects to Agensi and installs this skill for you. If a payment is needed, your agent shows it to you first.

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    Requires

    Python

    Listed3 days ago
    Updatedtoday

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