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AgentCompany/builtin-skills/Video-maker/remotion-best-practices/rules/gifs.md
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ZacharyZhang-NY e74dafcd36 Silence render-disposed spam, unbreak bundled skills, drop board wake
Three independently ugly bugs that all fed the same log flood:

* Electron's `WebFrameMain.send` writes every "Render frame was disposed"
  to stderr via `console.error`. When the worker fans a second
  agent-event past a reloading renderer, we produced thousands of
  identical lines and stalled the main loop on stderr I/O. Added a
  `mainFrame.detached` guard so the send is short-circuited before
  Electron's own catch block fires, and installed a targeted filter in
  `suppress-warnings.ts` (now actually imported from the entry point)
  so the specific `console.error("Error sending from webFrameMain:"…)`
  noise never reaches the terminal. Any other payload still surfaces.

* `dispatchAgentMessage` accepted the human-reader sentinel as a wake
  target when an agent replied to `__board__` — `wakeAgentIfPossible`
  then called `db.getAgent("__board__")`, threw, and the dispatcher
  kept repeating on every send. Strip `HUMAN_SENDER_ID` at
  `resolveMessageWakeTargets`, and keep a defense-in-depth guard in the
  heartbeat so a stray caller (future automation fan-out) cannot
  reintroduce the crash.

* Pi's skills loader rejects any SKILL.md whose frontmatter `name`
  diverges from its parent directory. The four bundled `my-writing-style`
  copies declared `name: writing-style-skill`, so every install emitted
  a warning and dropped the skill. They also lived as orphan gitlinks
  (mode 160000 without .gitmodules), and the global `*.md` gitignore
  hid every other SKILL.md from version control. Fixed the frontmatter
  to match the dir, converted the dangling submodules to plain trees,
  and allowlisted `builtin-skills/**/*.md` so a fresh clone carries the
  catalogue instead of silently losing it.
2026-04-20 08:13:48 -04:00

3.6 KiB

name, description, metadata
name description metadata
gif Displaying GIFs, APNG, AVIF and WebP in Remotion
tags
gif, animation, images, animated, apng, avif, webp

Using Animated images in Remotion

Basic usage

Use <AnimatedImage> to display a GIF, APNG, AVIF or WebP image synchronized with Remotion's timeline:

import { AnimatedImage, staticFile } from "remotion";

export const MyComposition = () => {
  return (
    <AnimatedImage src={staticFile("animation.gif")} width={500} height={500} />
  );
};

Remote URLs are also supported (must have CORS enabled):

<AnimatedImage
  src="https://example.com/animation.gif"
  width={500}
  height={500}
/>

Sizing and fit

Control how the image fills its container with the fit prop:

// Stretch to fill (default)
<AnimatedImage src={staticFile("animation.gif")} width={500} height={300} fit="fill" />

// Maintain aspect ratio, fit inside container
<AnimatedImage src={staticFile("animation.gif")} width={500} height={300} fit="contain" />

// Fill container, crop if needed
<AnimatedImage src={staticFile("animation.gif")} width={500} height={300} fit="cover" />

Playback speed

Use playbackRate to control the animation speed:

<AnimatedImage src={staticFile("animation.gif")} width={500} height={500} playbackRate={2} /> {/* 2x speed */}
<AnimatedImage src={staticFile("animation.gif")} width={500} height={500} playbackRate={0.5} /> {/* Half speed */}

Looping behavior

Control what happens when the animation finishes:

// Loop indefinitely (default)
<AnimatedImage src={staticFile("animation.gif")} width={500} height={500} loopBehavior="loop" />

// Play once, show final frame
<AnimatedImage src={staticFile("animation.gif")} width={500} height={500} loopBehavior="pause-after-finish" />

// Play once, then clear canvas
<AnimatedImage src={staticFile("animation.gif")} width={500} height={500} loopBehavior="clear-after-finish" />

Styling

Use the style prop for additional CSS (use width and height props for sizing):

<AnimatedImage
  src={staticFile("animation.gif")}
  width={500}
  height={500}
  style={{
    borderRadius: 20,
    position: "absolute",
    top: 100,
    left: 50,
  }}
/>

Getting GIF duration

Use getGifDurationInSeconds() from @remotion/gif to get the duration of a GIF.

npx remotion add @remotion/gif
import { getGifDurationInSeconds } from "@remotion/gif";
import { staticFile } from "remotion";

const duration = await getGifDurationInSeconds(staticFile("animation.gif"));
console.log(duration); // e.g. 2.5

This is useful for setting the composition duration to match the GIF:

import { getGifDurationInSeconds } from "@remotion/gif";
import { staticFile, CalculateMetadataFunction } from "remotion";

const calculateMetadata: CalculateMetadataFunction = async () => {
  const duration = await getGifDurationInSeconds(staticFile("animation.gif"));
  return {
    durationInFrames: Math.ceil(duration * 30),
  };
};

Alternative

If <AnimatedImage> does not work (only supported in Chrome and Firefox), you can use <Gif> from @remotion/gif instead.

npx remotion add @remotion/gif # If project uses npm
bunx remotion add @remotion/gif # If project uses bun
yarn remotion add @remotion/gif # If project uses yarn
pnpm exec remotion add @remotion/gif # If project uses pnpm
import { Gif } from "@remotion/gif";
import { staticFile } from "remotion";

export const MyComposition = () => {
  return <Gif src={staticFile("animation.gif")} width={500} height={500} />;
};

The <Gif> component has the same props as <AnimatedImage> but only supports GIF files.