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AgentCompany/builtin-skills/Video-maker/remotion-best-practices/rules/lottie.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

1.8 KiB

name, description, metadata
name description metadata
lottie Embedding Lottie animations in Remotion.
category
Animation

Using Lottie Animations in Remotion

Prerequisites

First, the @remotion/lottie package needs to be installed.
If it is not, use the following command:

npx remotion add @remotion/lottie # If project uses npm
bunx remotion add @remotion/lottie # If project uses bun
yarn remotion add @remotion/lottie # If project uses yarn
pnpm exec remotion add @remotion/lottie # If project uses pnpm

Displaying a Lottie file

To import a Lottie animation:

  • Fetch the Lottie asset
  • Wrap the loading process in delayRender() and continueRender()
  • Save the animation data in a state
  • Render the Lottie animation using the Lottie component from the @remotion/lottie package
import { Lottie, LottieAnimationData } from "@remotion/lottie";
import { useEffect, useState } from "react";
import { cancelRender, continueRender, delayRender } from "remotion";

export const MyAnimation = () => {
  const [handle] = useState(() => delayRender("Loading Lottie animation"));

  const [animationData, setAnimationData] =
    useState<LottieAnimationData | null>(null);

  useEffect(() => {
    fetch("https://assets4.lottiefiles.com/packages/lf20_zyquagfl.json")
      .then((data) => data.json())
      .then((json) => {
        setAnimationData(json);
        continueRender(handle);
      })
      .catch((err) => {
        cancelRender(err);
      });
  }, [handle]);

  if (!animationData) {
    return null;
  }

  return <Lottie animationData={animationData} />;
};

Styling and animating

Lottie supports the style prop to allow styles and animations:

return (
  <Lottie animationData={animationData} style={{ width: 400, height: 400 }} />
);