🎨 Add new Flux icons: implement multiple reusable icon components (e.g., hand-raised, hand-thumb-up, heart, hashtag, home) with variant support for improved UI consistency.

2026-01-29 08:53:18 +00:00 · 2026-01-23 23:00:02 +01:00
parent 578e4f13fc
commit b30fec150c
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--- a/videos/.opencode/skills/remotion-best-practices/rules/compositions.md
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+---
+name: compositions
+description: Defining compositions, stills, folders, default props and dynamic metadata
+metadata:
+  tags: composition, still, folder, props, metadata
+---
+
+A `<Composition>` defines the component, width, height, fps and duration of a renderable video.
+
+It normally is placed in the `src/Root.tsx` file.
+
+```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}
+    />
+  );
+};
+```
+
+## Default Props
+
+Pass `defaultProps` to provide initial values for your component.  
+Values must be JSON-serializable (`Date`, `Map`, `Set`, and `staticFile()` are supported).
+
+```tsx
+import { Composition } from "remotion";
+import { MyComposition, MyCompositionProps } from "./MyComposition";
+
+export const RemotionRoot = () => {
+  return (
+    <Composition
+      id="MyComposition"
+      component={MyComposition}
+      durationInFrames={100}
+      fps={30}
+      width={1080}
+      height={1080}
+      defaultProps={{
+        title: "Hello World",
+        color: "#ff0000",
+      } satisfies MyCompositionProps}
+    />
+  );
+};
+```
+
+Use `type` declarations for props rather than `interface` to ensure `defaultProps` type safety.
+
+## Folders
+
+Use `<Folder>` to organize compositions in the sidebar.  
+Folder names can only contain letters, numbers, and hyphens.
+
+```tsx
+import { Composition, Folder } from "remotion";
+
+export const RemotionRoot = () => {
+  return (
+    <>
+      <Folder name="Marketing">
+        <Composition id="Promo" /* ... */ />
+        <Composition id="Ad" /* ... */ />
+      </Folder>
+      <Folder name="Social">
+        <Folder name="Instagram">
+          <Composition id="Story" /* ... */ />
+          <Composition id="Reel" /* ... */ />
+        </Folder>
+      </Folder>
+    </>
+  );
+};
+```
+
+## Stills
+
+Use `<Still>` for single-frame images. It does not require `durationInFrames` or `fps`.
+
+```tsx
+import { Still } from "remotion";
+import { Thumbnail } from "./Thumbnail";
+
+export const RemotionRoot = () => {
+  return (
+    <Still
+      id="Thumbnail"
+      component={Thumbnail}
+      width={1280}
+      height={720}
+    />
+  );
+};
+```
+
+## Calculate Metadata
+
+Use `calculateMetadata` to make dimensions, duration, or props dynamic based on data.
+
+```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,
+    },
+  };
+};
+
+export const RemotionRoot = () => {
+  return (
+    <Composition
+      id="MyComposition"
+      component={MyComposition}
+      durationInFrames={100} // Placeholder, will be overridden
+      fps={30}
+      width={1080}
+      height={1080}
+      defaultProps={{ videoId: "abc123" }}
+      calculateMetadata={calculateMetadata}
+    />
+  );
+};
+```
+
+The function can return `props`, `durationInFrames`, `width`, `height`, `fps`, and codec-related defaults. It runs once before rendering begins.