Skill: kirkraman/jx-best-practices (version 1.0.2)

--- name: remotion-best-practices description: Best practices for Remotion - Video creation in React metadata: tags: remotion, video, react, animation, composition --- ## When to use Use this skills whenever you are dealing with Remotion code to obtain the domain-specific knowledge. ## How to use Read individual rule files for detailed explanations and code examples: - [rules/3d.md](rules/3d.md) - 3D content in Remotion using Three.js and React Three Fiber - [rules/animations.md](rules/animations.md) - Fundamental animation skills for Remotion - [rules/assets.md](rules/assets.md) - Importing images, videos, audio, and fonts into Remotion - [rules/audio.md](rules/audio.md) - Using audio and sound in Remotion - importing, trimming, volume, speed, pitch - [rules/calculate-metadata.md](rules/calculate-metadata.md) - Dynamically set composition duration, dimensions, and props - [rules/can-decode.md](rules/can-decode.md) - Check if a video can be decoded by the browser using Mediabunny - [rules/charts.md](rules/charts.md) - Chart and data visualization patterns for Remotion - [rules/compositions.md](rules/compositions.md) - Defining compositions, stills, folders, default props and dynamic metadata - [rules/display-captions.md](rules/display-captions.md) - Displaying captions in Remotion with TikTok-style pages and word highlighting - [rules/extract-frames.md](rules/extract-frames.md) - Extract frames from videos at specific timestamps using Mediabunny - [rules/fonts.md](rules/fonts.md) - Loading Google Fonts and local fonts in Remotion - [rules/get-audio-duration.md](rules/get-audio-duration.md) - Getting the duration of an audio file in seconds with Mediabunny - [rules/get-video-dimensions.md](rules/get-video-dimensions.md) - Getting the width and height of a video file with Mediabunny - [rules/get-video-duration.md](rules/get-video-duration.md) - Getting the duration of a video file in seconds with Mediabunny - [rules/gifs.md](rules/gifs.md) - Displaying GIFs synchronized with Remotion's timeline - [rules/images.md](rules/images.md) - Embedding images in Remotion using the Img component - [rules/import-srt-captions.md](rules/import-srt-captions.md) - Importing .srt subtitle files into Remotion using @remotion/captions - [rules/lottie.md](rules/lottie.md) - Embedding Lottie animations in Remotion - [rules/measuring-dom-nodes.md](rules/measuring-dom-nodes.md) - Measuring DOM element dimensions in Remotion - [rules/measuring-text.md](rules/measuring-text.md) - Measuring text dimensions, fitting text to containers, and checking overflow - [rules/sequencing.md](rules/sequencing.md) - Sequencing patterns for Remotion - delay, trim, limit duration of items - [rules/tailwind.md](rules/tailwind.md) - Using TailwindCSS in Remotion - [rules/text-animations.md](rules/text-animations.md) - Typography and text animation patterns for Remotion - [rules/timing.md](rules/timing.md) - Interpolation curves in Remotion - linear, easing, spring animations - [rules/transcribe-captions.md](rules/transcribe-captions.md) - Transcribing audio to generate captions in Remotion - [rules/transitions.md](rules/transitions.md) - Scene transition patterns for Remotion - [rules/trimming.md](rules/trimming.md) - Trimming patterns for Remotion - cut the beginning or end of animations - [rules/videos.md](rules/videos.md) - Embedding videos in Remotion - trimming, volume, speed, looping, pitch

path: rules/animations.md
content: ---
name: animations
description: Fundamental animation skills for Remotion
metadata:
  tags: animations, transitions, frames, useCurrentFrame
---

All animations MUST be driven by the `useCurrentFrame()` hook.  
Write animations in seconds and multiply them by the `fps` value from `useVideoConfig()`.

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

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

  const opacity = interpolate(frame, [0, 2 * fps], [0, 1], {
    extrapolateRight: 'clamp',
  });
 
  return (
    <div style={{ opacity }}>Hello World!</div>
  );
};
```

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

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