SKILL

When given a pull request, inspect its current title and diff before proposing a name. Treat the title as a changelog entry for developers, not as a high-level summary of the work and not as an inventory of everything that changed. Do not automatically reuse the commit message.

Choose the narrowest title that still explains the developer-facing change. Aim for the right abstraction level rather than maximum specificity: use one concrete anchor and one clear outcome.

Choose the prefix

Do not infer the prefix from the directory name or from a Conventional Commit scope such as fix(core). For a package change, read the affected package's package.json and use its exact name value.

By default, use that package name in the PR title:

`[package-name]`: [description]

For example:

`@remotion/shapes`: Add heart shape

If multiple packages are affected, use the package that owns the primary user-facing change, not necessarily the package with the most changed files.

Describe the change

Use these guidelines in order:

1. Identify the main developer-visible change from the diff.
2. If a public API is central to the change, name the primary API exactly in backticks and briefly explain what it does. Do not list supporting APIs.
3. Otherwise, describe what changed rather than the files or implementation steps used to achieve it. Include technical details only when they help developers understand the result.

Prefer concrete verbs such as add, fix, remove, rename, and change. Avoid vague descriptions such as allow, improve, update handling, or support when the diff provides a clearer description. PR titles may use concise, telegraphic wording. Do not add articles or filler solely to make the title a grammatically complete sentence; keep them when they improve clarity.

Useful title shapes include:

`[package]`: Add `[api]()` for [concise purpose]
`[package]`: Add a `[name]` option to `[api]()` for [concise purpose]
`[package]`: Fix [observable problem] when [condition]
`[package]`: Change `[api]()` to [new observable behavior]

Examples:

`@remotion/studio-protocol`: Add `addElementLibraryToStudio()` for adding Element libraries to the config
`@remotion/web-renderer`: Add a `metadata` option to `renderMediaOnWeb()` using Mediabunny's `MetadataTags`
`@remotion/studio`: Remove Asset Inspector quick action scrollbar

The first example is better than "Add Element catalogs to Studio" because it names the main API and explains its purpose. The Studio CSS example deliberately describes the visible result instead of the CSS file or overflow rule that implemented it.

Special handling

For changes that match one of the categories below, use its special prefix instead of a package name. Classify the change by its user-facing impact, not merely by the package directory containing the changed files.

If a change only adds, fixes, or stabilizes internal tests, test fixtures, snapshots, or test infrastructure, and does not change shipped behavior, use the Internal: prefix. This also applies to package-local tests under a published package. Do not use that package's name as the prefix just because the test is located there. The package name may instead appear in the description when useful:

Internal: Stabilize registration range test in `@remotion/transitions`

If shipped implementation changes are accompanied by tests, use the normal affected-package prefix instead.

If the change is about docs only:

Docs: Add page about heart shape

If the change is internal monorepo work that does not have a more specific category below, use the Internal: prefix:

Internal: Simplify release bookkeeping

If the change relates to Remotion Elements, use the Elements: prefix:

Elements: Add animated title element

If the change relates to packages/convert, use the remotion.dev/convert prefix:

remotion.dev/convert: Support trimming

If the change relates to packages/example, say Internal Testbed:

Internal testbed: Add trimming sample composition

If the change adds or modifies a skill, prefix with Skills::

Skills: Add `/remotion-upgrade` skill

If the change relates to packages/brand, prefix with remotion.dev/brand:

remotion.dev/brand: Add animated logo

If the change relates to packages/it-tests, prefix with Internal tests:

Internal tests: Add video integration test