remotion-dev.

publish-chromium

Build and publish the Remotion Lambda layer zips (chromium, fonts, emoji-apple, emoji-google, cjk) from this repo to s3://remotionlambda-binaries-$region across all AWS regions. Use when the user wants to publish, release, upload, or ship a new version of the chromium binaries / lambda layers from the lambda-binaries repo.

add-bug

Add a new Remotion bug entry to packages/bugs/api/[v].ts. Use when the user describes a bug and affected Remotion versions that should be surfaced through the bugs API.

add-cli-option

Add a new Remotion CLI or config option by creating an AnyRemotionOption, registering CLI parsing, wiring config setters, and updating documentation. Use when adding or converting command-line flags or Remotion options.

add-effect

Add a new effect to @remotion/effects, including implementation, package exports, docs, demos, preview images, Remotion skill updates, formatting, and builds.

add-expert

Add a new expert to the Remotion experts page

add-new-package

Add a new package to the Remotion monorepo, including package scaffolding, monorepo registration, documentation, build scripts, and release checklist updates. Use when creating a new @remotion package.

add-sfx

Add a new sound effect to @remotion/sfx

add-webcodecs-bug

Add a browser WebCodecs bug to the Remotion Mediabunny WebCodecs bugs docs page. Use when given a Chromium, WebKit, or Firefox issue URL that should be tracked in packages/docs/docs/mediabunny/webcodecs-bugs.mdx, especially when needing to look up the issue title, filing date, reporter, and resolution state before editing the MDX table.

canvas-capture-extension

Rebuild, install, and reload the private Remotion Canvas Capture unpacked Chrome extension. Use when the extension needs to be restored after a Codex worktree was deleted, rebuilt after source changes, moved to its durable install directory, or reloaded in Chrome or Chrome Canary.

checkout

Checkout a requested branch or ref in the Remotion repo, rename the current task to the associated PR title when running in Codex, then install dependencies and build. Use when the user asks to checkout a ref and prepare the workspace.

convert

Start the local @remotion/convert app and open it in the Codex browser. Use when the user invokes /convert or $convert, asks to launch convert.remotion.dev locally, or wants to inspect the Convert package UI.

deprecate-api

Reference for how deprecation of public Remotion APIs is represented in TypeScript source and documentation. Use when adding, reviewing, or discussing a deprecation of a function, component, hook, type, prop, option, or other public API that remains available.

docs

Start the Remotion docs site and open it in the Codex browser. Use when the user invokes /docs or $docs, asks to launch the local documentation site, or wants to preview docs changes in Docusaurus.

docs-demo

Add an interactive demo to the Remotion documentation. Use when creating a new <Demo> component for docs pages.

experts

Maintain Remotion's experts directory and its generated assets. Use when adding, removing, or editing experts; changing experts data or portraits; rendering expert cards; or regenerating the homepage experts animation for Chrome and Safari.

find-unplanned-issues

Audit and clean the Remotion GitHub masterplan hierarchy. Use when finding open issues that lack a masterplan ancestor, identifying orphaned issues that need a parent, or recursively removing closed issues from the masterplan rooted at issue #9081.

fix-dependabot

Fix a Dependabot PR by updating all monorepo instances of the dependency, running bun install, and pushing

fix-root-cause

Apply when debugging. Trace each symptom back to the first place the system went wrong and fix it there. A guard is a fix only when the state it handles is legitimate.

flake

Track Remotion CI flakes in issue #8375, increment repeated signatures, discover failed PR checks when no PR is given, and rerun flaky GitHub Actions jobs.

formatting

Run Remotion formatting and style checks until they pass. Use when the user asks to fix formatting or run the formatting command.

gh-stack

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homepage-video-assets

Use when rendering or replacing Remotion homepage creator strip videos, especially transparent Chrome WebM and Safari MP4 assets hosted on remotion.media.

import-canvas-capture

Import a recorded Remotion Canvas Capture into a project without Studio interactions using the internal experimental-codemod command. Use when adding a capture file as an editable composition with cursor keyframes.

interactivity-best-practices

Best practices for writing Remotion animations that stay intuitive for agents and editable in Remotion Studio Visual Mode.

issue

Create, edit, or comment on Remotion GitHub issues.

issue-management

Manage GitHub Issues 2.0 relationships with gh CLI: parent issues, sub-issues, blocked-by, and blocking links.

merge

Wait for a Remotion pull request to become mergeable, handle merge conflicts, distinguish genuine CI failures from flakes, rerun flaky checks through the flake skill, and merge the PR. Use when asked to run /merge, merge a current PR after checks pass, or shepherd a Remotion PR through CI to merge.

no-comments

Remove code comments that explain or defend Remotion's own code, keeping only comments about external systems we cannot change (browser quirks, codec/FFmpeg behavior, third-party APIs, OS or platform bugs). Use when the user invokes /no-comments or asks to strip unnecessary comments from a diff or files.

no-pointer

Apply Remotion Studio's pointerless interaction styling to clickable controls. Use when adding or revising Studio buttons or links that should use the default cursor, brighten on hover, and show focus decoration only for keyboard navigation.

nullable-new-params

Fix newly added optional parameters, optional React props, and optional type/interface members in Remotion monorepo diffs by converting internal APIs to required nullable values and updating call sites. Use when a PR, review, or user asks to forbid new `foo?: T` / `param?: T` additions except for exported or documented public APIs where requiring the value would be breaking.

offload-r2

Upload Remotion repository media assets to the Cloudflare R2 bucket behind remotion.media, switch source code to hosted URLs, verify the public objects, and remove repository-local copies.

player-example

Start the @remotion/player example app and open it in the Codex browser. Use when the user invokes /player-example or $player-example, asks to launch the player testbed, or wants to inspect @remotion/player locally.

pr

Open a pull request for the current feature

pr-name

Review or correct a Remotion pull request title

pr-ready

Resolve CI failures, merge conflicts, or local branch changes to get a PR ready

product-recording

Prepare Remotion Studio for a user-recorded product demo with Canvas Capture, then import the downloaded take into packages/brand as an editable composition. Use for recording Studio interactions, timeline demos, and product shots.

react-scan

Capture and analyze Remotion Studio React render profiles through development-only WebMCP tools. Use when diagnosing unnecessary re-renders, slow commits, frame-reactive component trees, or when comparing render performance before and after a change.

release

Release a new Remotion version

remotion-best-practices

Router for all Remotion skills

remotion-captions

Transcribing, displaying and animating captions

remotion-create

Create a new Remotion video

remotion-docs

Search Remotion documentation

remotion-interactivity

Structure Remotion markup for interactivity

remotion-license

Find Remotion license information, FAQs, terms, and where to buy a license.

remotion-maps

Remotion Map animation knowledge

remotion-markup

Content, animation and effects best practices

remotion-multimedia

Interacting with Mediabunny

remotion-new-markup

Write or refactor editable Remotion markup with appropriate tracks, shared timing boundaries, and connected compositions.

remotion-render

Export a Remotion video

remotion-saas

Build an app with Remotion

remotion-studio

Preview a Remotion video

remotion-upgrade

Upgrade Remotion, and related packages

scaffold-element

Scaffold a new Remotion Element for development in the docs Remotion Studio.

skill-locations

Document Remotion skill placement. Use when adding, moving, or editing Remotion skills to decide whether a skill belongs in .agents/skills as an internal skill or packages/skills as a public skill.

studio

Start Remotion Studio from packages/example and open it in the Codex browser. Use when the user invokes /studio or $studio, asks to launch the example Studio, or wants the Remotion Studio dev UI available locally.

studio-config-option-lifecycle

Classify and wire Remotion Studio config options as either startup-fixed or reloadable while preventing mixed lifecycle behavior across consumers. Use when adding, changing, or reviewing a Config setter or CLI option consumed by Studio, its preview server, compiler, HTML bootstrap, public-folder watcher, or render queue.

studio-css-reset

Style Remotion Studio UI inside `.css-reset` containers without relying on inherited reset properties.

studio-dev

Develop or review Remotion Studio features and UI. Apply Studio principles for optimistic updates, agent access through code or WebMCP, iframe-safe hover behavior, design consistency, mode availability, and performance verification.

studio-loop

Continuously improve Remotion Studio by making a video, reproducing real UX and performance issues, fixing them, and verifying the result. Use for ongoing Studio dogfooding and maintenance, including checkpoints that hand one PR over for review while work continues in a stacked PR.

studio-mode

Understand the capabilities and restrictions of each Remotion Studio mode. Use when implementing or reviewing Studio actions, permissions, availability, or UI across interactive, detached, deployed, and browser-based Studios.

studio-perf

Optimize Remotion Studio render performance by minimizing frame-reactive component surfaces, preferring imperative timeline state reads, and memoizing stable render boundaries. Use when code reads the current frame with `useTimelinePosition()` or components unnecessarily render on every frame.

timeline-layout-reveal

Capture matching 2x Remotion Studio timeline screenshots and make a before/after crop reveal in packages/brand. Use for timeline layout comparison videos, including recapturing a historical layout.

update-chrome-binaries-test-region

Publish Remotion Lambda Chrome binaries to the eu-central-1 test region and update hosted layer and Chrome version references. Use when updating Chrome binaries before full regional rollout.

update-codex-plugin

Update Remotion's published Codex and ChatGPT directory plugin to a released Remotion version. Prepare the ZIP from the official Codex plugin repository, preserve its listing metadata, and upload and publish through OpenAI Platform.

update-ffmpeg

Update the monorepo FFmpeg archives, regenerate bindings, rebuild compositor binaries, and validate a single Remotion pull request. Use after the seven-platform FFmpeg build completes.

update-from-upstream-main

Update the current Remotion branch with the latest canonical main branch. Use when asked to update or sync from upstream main, merge the latest main into a feature branch, fast-forward local main, or bring a pull request branch up to date without rewriting published history.

update-legal-pdfs

Regenerate the downloadable PDF copies of Remotion's Terms, Privacy Policy, DPA Statement, and DPIA Statement after editing their docs pages.

update-stars

Update Remotion homepage GitHub star counts. Use when asked to refresh the displayed GitHub star count and push the change to main.

update-version

Update `AvailableFrom` in a PR to the next Remotion patch version (`main` + `0.0.1`).

upgrade-caniuse

Upgrade the caniuse-lite override in the Remotion repo. Use when asked to update caniuse-lite to the latest npm version.

upgrade-mediabunny

Upgrade Mediabunny and related @mediabunny packages across the Remotion repo. Use when asked to update Mediabunny to the latest version.

upload-element-previews

Upload a Remotion Element's preview assets to remotion.media and replace local preview URLs. Use when given an Element slug, or when exactly one Element's preview assets are present in the current worktree.

upload-r2

Upload large Remotion repository assets to the Cloudflare R2 bucket behind remotion.media and replace local public/ assets with hosted URLs. Use when a file is too large for Git or when a PR should avoid committing media binaries by hosting them on remotion.media.

v5-breaking-changes

Implement or review a Remotion 5 breaking change while the v4 and v5 release lines still share code. Use when v4 behavior and public types must remain compatible on main, but flipping the central v5 flag should activate a new runtime behavior, default, or TypeScript API.

vercel

Set up a Codex monitor for Vercel deployments and preview URLs. Use when the user invokes /vercel or $vercel, asks Codex to watch or monitor a Vercel deployment, waits for a Vercel preview or PR preview to become ready, or wants to be notified with both the deployment URL and preview URL once Vercel is READY.

version

The version of Remotion we are working on.

video-report

Generate a report about a video

visual-mode

Guidance for working on Remotion Studio Visual Mode, sequence identity, node paths, symbolicated stacks, override IDs, and hot reload behavior. Use when implementing or debugging visual editing of Sequences.

web-renderer-test

Add explicitly requested web renderer tests or update existing ones for implementation changes.

writing-docs

Guides for writing and editing Remotion documentation. Use when adding docs pages, editing MDX files in packages/docs, or writing documentation content.

writing-tests

Guidance for explicitly requested new tests and for updating or reviewing existing tests in the Remotion repository.

add-sound-effect

Add a new sound effect to the remotion-media project. Converts a source audio file to WAV format normalized to -3dB peak and adds it to generate.ts.

collect-ffmpeg-artifacts

Download and verify the seven platform FFmpeg archives produced for one rust-ffmpeg-splitter commit by GitHub Actions and CircleCI. Use when handing completed splitter CI binaries to rust-ffmpeg-sys without mixing commits or incomplete CI runs.