Remotion

What the source does

• FilesystemNone observedNo reads or writes in the source
• NetworkNone observedNo outbound calls in the source
• ShellNone observedNo commands run in the source
• DependenciesPinnedNothing floats
• SecretsNone foundNo keys in source

Five audit layers

Gates applied: no behavioural pass.

style: "mapbox://styles/mapbox/standard",

style: "mapbox://styles/mapbox/standard",

skills/brainstorming/scripts/node_modules/.bin/mime

skills/supabase-postgres-best-practices/CLAUDE.md

Audit 0.4.1 · source sha d018fe9e3295 · 22 Oct 2026Report an issue or request a re-scan

• Publisherguanyang GitHub userOwner of the repository this skill is read from
• Source folderguanyang/antigravity-skills/skills/remotionThe exact folder we audited
• LicenceMITAs the repository states it
• Commit pinned for this verdictd018fe9e3295A new audit runs when the source changes
• Repository statusNot archivedPushed today
• Sandboxed runNot runSkills are read, not executed; layer L4 is skipped

Its description: Best practices and domain knowledge for building videos programmatically with Remotion (videos in React/TypeScript, rendered to MP4). Use whenever writing or editing Remotion code — scaffolding a video project,…

---
name: remotion-best-practices
description: Best practices and domain knowledge for building videos programmatically with Remotion (videos in React/TypeScript, rendered to MP4). Use whenever writing or editing Remotion code — scaffolding a video project, animating with interpolate/spring over useCurrentFrame(), sequencing scenes and transitions, captions/subtitles, audio, GIFs/Lottie/3D, charts, visual effects, dynamic duration via calculateMetadata, or rendering. Consult before reaching for a Remotion API, since its components and props evolve (e.g. @remotion/media).
metadata:
  tags: remotion, video, react, animation, composition
---

## When to use

Use this skill whenever you are dealing with Remotion code to obtain the domain-specific knowledge.

## New project setup

When in an empty folder or workspace with no existing Remotion project, scaffold one using:

```bash
npx create-video@latest --yes --blank --no-tailwind my-video
```

Replace `my-video` with a suitable project name.

## Designing a video

Before designing visual scenes, layouts, promos, motion graphics, or text-heavy videos, load [rules/video-layout.md](rules/video-layout.md) for video-first layout and text sizing guidance.

Animate properties using `useCurrentFrame()` and `interpolate()`. Prefer `interpolate()` over `spring()` unless physics-based motion is explicitly needed. Use `Easing.bezier()` to customize timing, including jumpy or overshooting motion.

For animations that should be editable in Remotion Studio, keep the `interpolate()` call inline in the `style` prop and use individual CSS transform properties (`scale`, `translate`, `rotate`) instead of composing a `transform` string.

```tsx
import { useCurrentFrame, Easing, interpolate, useVideoConfig } from "remotion";

export const FadeIn = () => {
  const frame = useCurrentFrame();
  const { fps } = useVideoConfig();

  const opacity = interpolate(frame, [0, 2 * fps], [0, 1], {
    extrapolateRight: "clamp",
    extrapolateLeft: "clamp",
    easing: Easing.bezier(0.16, 1, 0.3, 1),
  });

  return <div style={{ opacity }}>Hello World!</div>;
};
```

Prefer:

```tsx
style={{
  scale: interpolate(frame, [0, 100], [0, 1]),
  translate: interpolate(frame, [0, 100], ["0px 0px", "100px 100px"]),
  rotate: interpolate(frame, [0, 100], ["20deg", "90deg"]),
}}
```

Over:

```tsx
const scale = interpolate(frame, [0, 100], [0, 1]);

style={{
  transform: `scale(${scale})`,
}}
```

CSS transitions or animations are FORBIDDEN - they will not render correctly.  
Tailwind animation class names are FORBIDDEN - they will not render correctly.

Place assets in the `public/` folder at your project root.

Use `staticFile()` to reference files from the `public/` folder.

Add images using the `<Img>` component:

```tsx
import { Img, staticFile } from "remotion";

export const MyComposition = () => {
  return <Img src={staticFile("logo.png")} style={{ width: 100, height: 100 }} />;
};
```

Add videos using the `<Video>` component from `@remotion/media`:

```tsx
import { Video } from "@remotion/media";
import { staticFile } from "remotion";

export const MyComposition = () => {
  return <Video src={staticFile("video.mp4")} style={{ opacity: 0.5 }} />;
};
```

Add audio using the `<Audio>` component from `@remotion/media`:

```tsx
import { Audio } from "@remotion/media";
import { staticFile } from "remotion";

export const MyComposition = () => {
  return <Audio src={staticFile("audio.mp3")} />;
};
```

Assets can be also referenced as remote URLs:

```tsx
import { Video } from "@remotion/media";

export const MyComposition = () => {
  return <Video src="https://remotion.media/video.mp4" />
};
```

To delay content wrap it in `<Sequence>` and use `from`.
To limit the duration of an element, use `durationInFrames` of `<Sequence>`.
`<Sequence>` by default is an absolute fill. For inline content, use `layout="none"`.

```tsx
import { Sequence } from "remotion";

export const Title = () => {
  const frame = useCurrentFrame();
  const { fps } = useVideoConfig();

  const opacity = interpolate(frame, [0, 2 * fps], [0, 1], {
    extrapolateRight: "clamp",
    extrapolateLeft: "clamp",
    easing: Easing.bezier(0.16, 1, 0.3, 1),
  });

  return <div style={{ opacity }}>Title</div>;
};

export const Subtitle = () => {
  return <div>Subtitle</div>;
};

const Main = () => {
  const {fps} = useVideoConfig();

  return (
    <AbsoluteFill>
      <Sequence>
        <Background />
      </Sequence>
      <Sequence from={1 * fps} durationInFrames={2 * fps} layout="none">
        <Title />
      </Sequence>
      <Sequence from={2 * fps} durationInFrames={2 * fps} layout="none">
        <Subtitle />
      </Sequence>
    </AbsoluteFill>
  );
}
```

The width, height, fps, and duration of a video is defined in `src/Root.tsx`:

```tsx
import { Composition } from "remotion";
import { MyComposition } from "./MyComposition";

export const RemotionRoot = () => {
  return (
    <Composition
      id="MyComposition"
      component={MyComposition}
      durationInFrames={100}
      fps={30}
      width={1080}
      height={1080}
    />
  );
};
```

Metadata can also be calculated dynamically:

```tsx
import { Composition, CalculateMetadataFunction } from "remotion";
import { MyComposition, MyCompositionProps } from "./MyComposition";

const calculateMetadata: CalculateMetadataFunction<
  MyCompositionProps
> = async ({ props, abortSignal }) => {
  const data = await fetch(`https://api.example.com/video/${props.videoId}`, {
    signal: abortSignal,
  }).then((res) => res.json());

  return {
    durationInFrames: Math.ceil(data.duration * 30),
    props: {
      ...props,
      videoUrl: data.url,
    },
    width: 1080,
    height: 1080,
  };
};

export const RemotionRoot = () => {
  return (
    <Composition
      id="MyComposition"
      component={MyComposition}
      fps={30}
      width={1080}
      height={1080}
      defaultProps={{ videoId: "abc123" }}
      calculateMetadata={calculateMetadata}
 

Excerpt, first 6,000 characters of SKILL.md, verbatim from the audited commit. It is text from someone else’s repository, quoted so you can judge it before your agent reads it.

1. 2026-10-22
   ✕BLOCK D 69 / 100

   first audit · source d018fe9e3295

Questions about Remotion

• github.com/guanyang/antigravity-skills/tree/main/skills/remotion — the audited source at commit d018fe9e3295 and every finding aboveObserved · 22 Oct 2026

Spotted something wrong? Report a correction · Methodology