Add generate-video plugin#26
Conversation
Public release of the generate-video skill: render smooth, deterministic MP4s from web scenes by driving headless Chromium over CDP with an injected virtual clock, capturing exact per-frame PNGs, and encoding with ffmpeg.
Tabular numerals for count-up readouts, one-reveal-at-a-time pacing, explicit end-frame hold, and MP4 verification steps (frame count vs expected, spot-check first/mid/last frames).
|
Firetiger deploy monitoring skipped This PR didn't match the auto-monitor filter configured on your GitHub connection:
Reason: PR appears to be for a plugin marketplace or skills system, not for the kernel, infra, hypeman, or hypeship repositories themselves. To monitor this PR anyway, reply with |
Setting window.__vt alone doesn't refresh the scene — useClock only updates on the vt event, so the preview would capture the prior frame.
![cursor[bot]](https://avatars.githubusercontent.com/in/1210556?s=60&v=4){kind=small}
There was a problem hiding this comment.
Cursor Bugbot has reviewed your changes and found 1 potential issue.
❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.
Reviewed by Cursor Bugbot for commit 6fca4af. Configure here.
| // connect to a PAGE target (not the browser endpoint — it lacks Page/Runtime) | ||
| const list = await (await fetch(`http://127.0.0.1:${PORT}/json/list`)).json(); | ||
| const page = list.find((t) => t.type === "page") || list[0]; | ||
| const ws = new WebSocket(page.webSocketDebuggerUrl.replace("localhost", "127.0.0.1")); |
There was a problem hiding this comment.
Wrong CDP target fallback
Medium Severity
The sample recorder picks a CDP target with list.find((t) => t.type === "page") || list[0], so when no page entry exists it attaches to whatever is first in /json/list, often the browser endpoint. That endpoint cannot run Page.* / Runtime.*, which matches the gotcha that says not to use the browser socket—so the script can fail in a confusing way instead of failing clearly.
Reviewed by Cursor Bugbot for commit 6fca4af. Configure here.
1 participant
Summary
Open-sources the
generate-videoskill as a new plugin in this marketplace.The skill renders smooth, judder-free MP4s from web pages and animated visualizations: instead of screen-capturing whatever the browser paints, it drives headless Chromium over raw CDP with an injected virtual clock, steps time frame-by-frame, captures each exact instant as a lossless PNG, and encodes with ffmpeg. Includes the React clock/ramp hooks, the self-contained Node recorder (no puppeteer/playwright), encode recipes (MP4 + two-pass-palette GIF), and the gotchas list.
Changes:
plugins/generate-video/— new plugin (plugin.json + SKILL.md).claude-plugin/marketplace.json— register the plugin.cursor-plugin/plugin.json— include the new skills pathREADME.md— install instructions + Available Skills entryCompared to the internal version, references to internal-only skills and environment specifics were generalized; the technical content is unchanged.
This skill doesn't require a Kernel account — just Chromium, Node ≥ 18, and ffmpeg. The README entry calls that out.
Test plan
/plugin marketplace add kernel/skills+/plugin install generate-videoresolves the new plugin🤖 Generated with Claude Code
Note
Low Risk
Documentation and plugin metadata only; no changes to auth, APIs, or runtime Kernel services.
Overview
Adds a new
generate-videoplugin to the Kernel skills marketplace so agents can render smooth MP4s from web scenes via CDP virtual-clock frame stepping and ffmpeg.New plugin:
plugins/generate-video/withplugin.jsonand a largeSKILL.mdthat documents scene composition, ReactuseClock/useRamphooks, a dependency-free Node CDP recorder, ffmpeg/GIF encoding, iteration/delivery (including cloudflared), and common gotchas. Internal-only references were generalized for open source.Wiring: Registers the plugin in
.claude-plugin/marketplace.json, adds./plugins/generate-video/skills/to Cursor’sskillslist, and updates README with install paths (/plugin install generate-video, manual copy) plus an Available Skills section noting no Kernel account is required (Chromium, Node, ffmpeg only).Reviewed by Cursor Bugbot for commit 6fca4af. Bugbot is set up for automated code reviews on this repo. Configure here.