feat: init codecs detect

2025-11-07 11:37:09 +08:00 · 2025-11-07 11:37:09 +08:00 · 4e0b181c2b
commit 4e0b181c2b
34 changed files with 5664 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,24 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
--- a/README.md
+++ b/README.md
@ -0,0 +1,73 @@
+# React + TypeScript + Vite
+
+This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules.
+
+Currently, two official plugins are available:
+
+- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Babel](https://babeljs.io/) (or [oxc](https://oxc.rs) when used in [rolldown-vite](https://vite.dev/guide/rolldown)) for Fast Refresh
+- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/) for Fast Refresh
+
+## React Compiler
+
+The React Compiler is not enabled on this template because of its impact on dev & build performances. To add it, see [this documentation](https://react.dev/learn/react-compiler/installation).
+
+## Expanding the ESLint configuration
+
+If you are developing a production application, we recommend updating the configuration to enable type-aware lint rules:
+
+```js
+export default defineConfig([
+  globalIgnores(['dist']),
+  {
+    files: ['**/*.{ts,tsx}'],
+    extends: [
+      // Other configs...
+
+      // Remove tseslint.configs.recommended and replace with this
+      tseslint.configs.recommendedTypeChecked,
+      // Alternatively, use this for stricter rules
+      tseslint.configs.strictTypeChecked,
+      // Optionally, add this for stylistic rules
+      tseslint.configs.stylisticTypeChecked,
+
+      // Other configs...
+    ],
+    languageOptions: {
+      parserOptions: {
+        project: ['./tsconfig.node.json', './tsconfig.app.json'],
+        tsconfigRootDir: import.meta.dirname,
+      },
+      // other options...
+    },
+  },
+])
+```
+
+You can also install [eslint-plugin-react-x](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-x) and [eslint-plugin-react-dom](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-dom) for React-specific lint rules:
+
+```js
+// eslint.config.js
+import reactX from 'eslint-plugin-react-x'
+import reactDom from 'eslint-plugin-react-dom'
+
+export default defineConfig([
+  globalIgnores(['dist']),
+  {
+    files: ['**/*.{ts,tsx}'],
+    extends: [
+      // Other configs...
+      // Enable lint rules for React
+      reactX.configs['recommended-typescript'],
+      // Enable lint rules for React DOM
+      reactDom.configs.recommended,
+    ],
+    languageOptions: {
+      parserOptions: {
+        project: ['./tsconfig.node.json', './tsconfig.app.json'],
+        tsconfigRootDir: import.meta.dirname,
+      },
+      // other options...
+    },
+  },
+])
+```
--- a/components.json
+++ b/components.json
@ -0,0 +1,22 @@
+{
+  "$schema": "https://ui.shadcn.com/schema.json",
+  "style": "new-york",
+  "rsc": false,
+  "tsx": true,
+  "tailwind": {
+    "config": "",
+    "css": "src/index.css",
+    "baseColor": "neutral",
+    "cssVariables": true,
+    "prefix": ""
+  },
+  "iconLibrary": "lucide",
+  "aliases": {
+    "components": "@/components",
+    "utils": "@/lib/utils",
+    "ui": "@/components/ui",
+    "lib": "@/lib",
+    "hooks": "@/hooks"
+  },
+  "registries": {}
+}
--- a/eslint.config.js
+++ b/eslint.config.js
@ -0,0 +1,23 @@
+import js from '@eslint/js'
+import globals from 'globals'
+import reactHooks from 'eslint-plugin-react-hooks'
+import reactRefresh from 'eslint-plugin-react-refresh'
+import tseslint from 'typescript-eslint'
+import { defineConfig, globalIgnores } from 'eslint/config'
+
+export default defineConfig([
+  globalIgnores(['dist']),
+  {
+    files: ['**/*.{ts,tsx}'],
+    extends: [
+      js.configs.recommended,
+      tseslint.configs.recommended,
+      reactHooks.configs['recommended-latest'],
+      reactRefresh.configs.vite,
+    ],
+    languageOptions: {
+      ecmaVersion: 2020,
+      globals: globals.browser,
+    },
+  },
+])
--- a/index.html
+++ b/index.html
@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>test_webcodecs</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>
--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/package.json
@ -0,0 +1,46 @@
+{
+  "name": "test_webcodecs",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc -b && vite build",
+    "lint": "eslint .",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "@radix-ui/react-accordion": "^1.2.12",
+    "@radix-ui/react-separator": "^1.1.8",
+    "@radix-ui/react-slot": "^1.2.4",
+    "class-variance-authority": "^0.7.1",
+    "clsx": "^2.1.1",
+    "lucide-react": "^0.552.0",
+    "preact": "^10.27.2",
+    "react": "^19.1.1",
+    "react-dom": "^19.1.1",
+    "tailwind-merge": "^3.3.1"
+  },
+  "devDependencies": {
+    "@eslint/js": "^9.36.0",
+    "@tailwindcss/vite": "^4.1.17",
+    "@types/node": "^24.6.0",
+    "@types/react": "^19.1.16",
+    "@types/react-dom": "^19.1.9",
+    "@vitejs/plugin-react": "^5.0.4",
+    "autoprefixer": "^10.4.21",
+    "eslint": "^9.36.0",
+    "eslint-plugin-react-hooks": "^5.2.0",
+    "eslint-plugin-react-refresh": "^0.4.22",
+    "globals": "^16.4.0",
+    "postcss": "^8.5.6",
+    "tailwindcss": "^4.1.17",
+    "tw-animate-css": "^1.4.0",
+    "typescript": "~5.9.3",
+    "typescript-eslint": "^8.45.0",
+    "vite": "npm:rolldown-vite@7.1.14"
+  },
+  "overrides": {
+    "vite": "npm:rolldown-vite@7.1.14"
+  }
+}
--- a/public/vite.svg
+++ b/public/vite.svg
@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="31.88" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 257"><defs><linearGradient id="IconifyId1813088fe1fbc01fb466" x1="-.828%" x2="57.636%" y1="7.652%" y2="78.411%"><stop offset="0%" stop-color="#41D1FF"></stop><stop offset="100%" stop-color="#BD34FE"></stop></linearGradient><linearGradient id="IconifyId1813088fe1fbc01fb467" x1="43.376%" x2="50.316%" y1="2.242%" y2="89.03%"><stop offset="0%" stop-color="#FFEA83"></stop><stop offset="8.333%" stop-color="#FFDD35"></stop><stop offset="100%" stop-color="#FFA800"></stop></linearGradient></defs><path fill="url(#IconifyId1813088fe1fbc01fb466)" d="M255.153 37.938L134.897 252.976c-2.483 4.44-8.862 4.466-11.382.048L.875 37.958c-2.746-4.814 1.371-10.646 6.827-9.67l120.385 21.517a6.537 6.537 0 0 0 2.322-.004l117.867-21.483c5.438-.991 9.574 4.796 6.877 9.62Z"></path><path fill="url(#IconifyId1813088fe1fbc01fb467)" d="M185.432.063L96.44 17.501a3.268 3.268 0 0 0-2.634 3.014l-5.474 92.456a3.268 3.268 0 0 0 3.997 3.378l24.777-5.718c2.318-.535 4.413 1.507 3.936 3.838l-7.361 36.047c-.495 2.426 1.782 4.5 4.151 3.78l15.304-4.649c2.372-.72 4.652 1.36 4.15 3.788l-11.698 56.621c-.732 3.542 3.979 5.473 5.943 2.437l1.313-2.028l72.516-144.72c1.215-2.423-.88-5.186-3.54-4.672l-25.505 4.922c-2.396.462-4.435-1.77-3.759-4.114l16.646-57.705c.677-2.35-1.37-4.583-3.769-4.113Z"></path></svg>
--- a/src/App.css
+++ b/src/App.css
@ -0,0 +1,42 @@
+#root {
+  max-width: 1280px;
+  margin: 0 auto;
+  padding: 2rem;
+  text-align: center;
+}
+
+.logo {
+  height: 6em;
+  padding: 1.5em;
+  will-change: filter;
+  transition: filter 300ms;
+}
+.logo:hover {
+  filter: drop-shadow(0 0 2em #646cffaa);
+}
+.logo.react:hover {
+  filter: drop-shadow(0 0 2em #61dafbaa);
+}
+
+@keyframes logo-spin {
+  from {
+    transform: rotate(0deg);
+  }
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+@media (prefers-reduced-motion: no-preference) {
+  a:nth-of-type(2) .logo {
+    animation: logo-spin infinite 20s linear;
+  }
+}
+
+.card {
+  padding: 2em;
+}
+
+.read-the-docs {
+  color: #888;
+}
--- a/src/App.tsx
+++ b/src/App.tsx
@ -0,0 +1,10 @@
+import DetectorCard from './components/DetectorCard'
+
+export function App() {
+  return (
+    <div className="min-h-screen w-full flex items-center justify-center p-4">
+      <DetectorCard />
+    </div>
+  )
+}
+export { App as default }
--- a/src/assets/react.svg
+++ b/src/assets/react.svg
@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="35.93" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 228"><path fill="#00D8FF" d="M210.483 73.824a171.49 171.49 0 0 0-8.24-2.597c.465-1.9.893-3.777 1.273-5.621c6.238-30.281 2.16-54.676-11.769-62.708c-13.355-7.7-35.196.329-57.254 19.526a171.23 171.23 0 0 0-6.375 5.848a155.866 155.866 0 0 0-4.241-3.917C100.759 3.829 77.587-4.822 63.673 3.233C50.33 10.957 46.379 33.89 51.995 62.588a170.974 170.974 0 0 0 1.892 8.48c-3.28.932-6.445 1.924-9.474 2.98C17.309 83.498 0 98.307 0 113.668c0 15.865 18.582 31.778 46.812 41.427a145.52 145.52 0 0 0 6.921 2.165a167.467 167.467 0 0 0-2.01 9.138c-5.354 28.2-1.173 50.591 12.134 58.266c13.744 7.926 36.812-.22 59.273-19.855a145.567 145.567 0 0 0 5.342-4.923a168.064 168.064 0 0 0 6.92 6.314c21.758 18.722 43.246 26.282 56.54 18.586c13.731-7.949 18.194-32.003 12.4-61.268a145.016 145.016 0 0 0-1.535-6.842c1.62-.48 3.21-.974 4.76-1.488c29.348-9.723 48.443-25.443 48.443-41.52c0-15.417-17.868-30.326-45.517-39.844Zm-6.365 70.984c-1.4.463-2.836.91-4.3 1.345c-3.24-10.257-7.612-21.163-12.963-32.432c5.106-11 9.31-21.767 12.459-31.957c2.619.758 5.16 1.557 7.61 2.4c23.69 8.156 38.14 20.213 38.14 29.504c0 9.896-15.606 22.743-40.946 31.14Zm-10.514 20.834c2.562 12.94 2.927 24.64 1.23 33.787c-1.524 8.219-4.59 13.698-8.382 15.893c-8.067 4.67-25.32-1.4-43.927-17.412a156.726 156.726 0 0 1-6.437-5.87c7.214-7.889 14.423-17.06 21.459-27.246c12.376-1.098 24.068-2.894 34.671-5.345a134.17 134.17 0 0 1 1.386 6.193ZM87.276 214.515c-7.882 2.783-14.16 2.863-17.955.675c-8.075-4.657-11.432-22.636-6.853-46.752a156.923 156.923 0 0 1 1.869-8.499c10.486 2.32 22.093 3.988 34.498 4.994c7.084 9.967 14.501 19.128 21.976 27.15a134.668 134.668 0 0 1-4.877 4.492c-9.933 8.682-19.886 14.842-28.658 17.94ZM50.35 144.747c-12.483-4.267-22.792-9.812-29.858-15.863c-6.35-5.437-9.555-10.836-9.555-15.216c0-9.322 13.897-21.212 37.076-29.293c2.813-.98 5.757-1.905 8.812-2.773c3.204 10.42 7.406 21.315 12.477 32.332c-5.137 11.18-9.399 22.249-12.634 32.792a134.718 134.718 0 0 1-6.318-1.979Zm12.378-84.26c-4.811-24.587-1.616-43.134 6.425-47.789c8.564-4.958 27.502 2.111 47.463 19.835a144.318 144.318 0 0 1 3.841 3.545c-7.438 7.987-14.787 17.08-21.808 26.988c-12.04 1.116-23.565 2.908-34.161 5.309a160.342 160.342 0 0 1-1.76-7.887Zm110.427 27.268a347.8 347.8 0 0 0-7.785-12.803c8.168 1.033 15.994 2.404 23.343 4.08c-2.206 7.072-4.956 14.465-8.193 22.045a381.151 381.151 0 0 0-7.365-13.322Zm-45.032-43.861c5.044 5.465 10.096 11.566 15.065 18.186a322.04 322.04 0 0 0-30.257-.006c4.974-6.559 10.069-12.652 15.192-18.18ZM82.802 87.83a323.167 323.167 0 0 0-7.227 13.238c-3.184-7.553-5.909-14.98-8.134-22.152c7.304-1.634 15.093-2.97 23.209-3.984a321.524 321.524 0 0 0-7.848 12.897Zm8.081 65.352c-8.385-.936-16.291-2.203-23.593-3.793c2.26-7.3 5.045-14.885 8.298-22.6a321.187 321.187 0 0 0 7.257 13.246c2.594 4.48 5.28 8.868 8.038 13.147Zm37.542 31.03c-5.184-5.592-10.354-11.779-15.403-18.433c4.902.192 9.899.29 14.978.29c5.218 0 10.376-.117 15.453-.343c-4.985 6.774-10.018 12.97-15.028 18.486Zm52.198-57.817c3.422 7.8 6.306 15.345 8.596 22.52c-7.422 1.694-15.436 3.058-23.88 4.071a382.417 382.417 0 0 0 7.859-13.026a347.403 347.403 0 0 0 7.425-13.565Zm-16.898 8.101a358.557 358.557 0 0 1-12.281 19.815a329.4 329.4 0 0 1-23.444.823c-7.967 0-15.716-.248-23.178-.732a310.202 310.202 0 0 1-12.513-19.846h.001a307.41 307.41 0 0 1-10.923-20.627a310.278 310.278 0 0 1 10.89-20.637l-.001.001a307.318 307.318 0 0 1 12.413-19.761c7.613-.576 15.42-.876 23.31-.876H128c7.926 0 15.743.303 23.354.883a329.357 329.357 0 0 1 12.335 19.695a358.489 358.489 0 0 1 11.036 20.54a329.472 329.472 0 0 1-11 20.722Zm22.56-122.124c8.572 4.944 11.906 24.881 6.52 51.026c-.344 1.668-.73 3.367-1.15 5.09c-10.622-2.452-22.155-4.275-34.23-5.408c-7.034-10.017-14.323-19.124-21.64-27.008a160.789 160.789 0 0 1 5.888-5.4c18.9-16.447 36.564-22.941 44.612-18.3ZM128 90.808c12.625 0 22.86 10.235 22.86 22.86s-10.235 22.86-22.86 22.86s-22.86-10.235-22.86-22.86s10.235-22.86 22.86-22.86Z"></path></svg>
--- a/src/components/DetectorCard.tsx
+++ b/src/components/DetectorCard.tsx
@ -0,0 +1,112 @@
+import { useEffect, useMemo, useState } from "react";
+import { Card, CardContent, CardHeader, CardTitle } from "../components/ui/card";
+import { Badge } from "../components/ui/badge";
+import { Separator } from "../components/ui/separator";
+import { Button } from "../components/ui/button";
+import type { CodecSupport, CodecStatus } from "../utils/codecs";
+import { detectAll } from "../utils/codecs";
+
+function label(status: CodecStatus) {
+  switch (status) {
+    case "supported":
+      return "支持";
+    case "unsupported":
+      return "不支持";
+    default:
+      return "未知";
+  }
+}
+
+function variant(status: CodecStatus): "default" | "destructive" | "outline" {
+  switch (status) {
+    case "supported":
+      return "default";
+    case "unsupported":
+      return "destructive";
+    default:
+      return "outline";
+  }
+}
+
+export default function DetectorCard() {
+  const [support, setSupport] = useState<CodecSupport | null>(null);
+  const [loading, setLoading] = useState(false);
+
+  const webCodecsLabel = useMemo(() => (support?.webCodecs ? "可用" : loading ? "检测中" : "不可用"), [support, loading]);
+
+  async function runDetect() {
+    setLoading(true);
+    try {
+      const result = await detectAll();
+      setSupport(result);
+    } catch (e) {
+      console.error(e);
+    } finally {
+      setLoading(false);
+    }
+  }
+
+  useEffect(() => {
+    runDetect();
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  const onCopy = async () => {
+    const text = JSON.stringify(support?.details ?? {}, null, 2);
+    try {
+      await navigator.clipboard.writeText(text);
+    } catch {}
+  };
+
+  return (
+    <Card className="max-w-2xl mx-auto">
+      <CardHeader>
+        <CardTitle>WebCodecs 编码能力判定</CardTitle>
+      </CardHeader>
+      <CardContent className="space-y-4">
+        <div className="text-sm text-muted-foreground">
+          该页面仅用于判定 WebCodecs、AVC(H.264)、HEVC(H.265) 的硬解/软解与总体支持情况。
+        </div>
+        <Separator />
+        <div className="grid grid-cols-1 gap-3">
+          <div className="flex items-center justify-between">
+            <span className="font-medium">WebCodecs</span>
+            <Badge variant={support ? (support.webCodecs ? "default" : "destructive") : "outline"}>{webCodecsLabel}</Badge>
+          </div>
+          <div className="space-y-2">
+            <div className="flex items-center justify-between">
+              <span className="font-medium">AVC (H.264) 总体</span>
+              <Badge variant={variant(support?.avc.overall ?? 'unknown')}>{label(support?.avc.overall ?? 'unknown')}</Badge>
+            </div>
+            <div className="flex items-center justify-between text-sm">
+              <span className="text-muted-foreground">硬解</span>
+              <Badge variant={variant(support?.avc.hardware ?? 'unknown')}>{label(support?.avc.hardware ?? 'unknown')}</Badge>
+            </div>
+            <div className="flex items-center justify-between text-sm">
+              <span className="text-muted-foreground">软解</span>
+              <Badge variant={variant(support?.avc.software ?? 'unknown')}>{label(support?.avc.software ?? 'unknown')}</Badge>
+            </div>
+          </div>
+          <div className="space-y-2">
+            <div className="flex items-center justify-between">
+              <span className="font-medium">HEVC (H.265) 总体</span>
+              <Badge variant={variant(support?.hevc.overall ?? 'unknown')}>{label(support?.hevc.overall ?? 'unknown')}</Badge>
+            </div>
+            <div className="flex items-center justify-between text-sm">
+              <span className="text-muted-foreground">硬解</span>
+              <Badge variant={variant(support?.hevc.hardware ?? 'unknown')}>{label(support?.hevc.hardware ?? 'unknown')}</Badge>
+            </div>
+            <div className="flex items-center justify-between text-sm">
+              <span className="text-muted-foreground">软解</span>
+              <Badge variant={variant(support?.hevc.software ?? 'unknown')}>{label(support?.hevc.software ?? 'unknown')}</Badge>
+            </div>
+          </div>
+        </div>
+        <div className="flex gap-2 pt-2">
+          <Button aria-label="重新检测" onClick={runDetect} disabled={loading}>{loading ? "检测中" : "重新检测"}</Button>
+          <Button variant="outline" aria-label="复制详情" onClick={onCopy} disabled={!support}>复制详情</Button>
+        </div>
+      </CardContent>
+    </Card>
+  );
+}
--- a/src/components/ui/accordion.tsx
+++ b/src/components/ui/accordion.tsx
@ -0,0 +1,64 @@
+import * as React from "react"
+import * as AccordionPrimitive from "@radix-ui/react-accordion"
+import { ChevronDownIcon } from "lucide-react"
+
+import { cn } from "@/lib/utils"
+
+function Accordion({
+  ...props
+}: React.ComponentProps<typeof AccordionPrimitive.Root>) {
+  return <AccordionPrimitive.Root data-slot="accordion" {...props} />
+}
+
+function AccordionItem({
+  className,
+  ...props
+}: React.ComponentProps<typeof AccordionPrimitive.Item>) {
+  return (
+    <AccordionPrimitive.Item
+      data-slot="accordion-item"
+      className={cn("border-b last:border-b-0", className)}
+      {...props}
+    />
+  )
+}
+
+function AccordionTrigger({
+  className,
+  children,
+  ...props
+}: React.ComponentProps<typeof AccordionPrimitive.Trigger>) {
+  return (
+    <AccordionPrimitive.Header className="flex">
+      <AccordionPrimitive.Trigger
+        data-slot="accordion-trigger"
+        className={cn(
+          "focus-visible:border-ring focus-visible:ring-ring/50 flex flex-1 items-start justify-between gap-4 rounded-md py-4 text-left text-sm font-medium transition-all outline-none hover:underline focus-visible:ring-[3px] disabled:pointer-events-none disabled:opacity-50 [&[data-state=open]>svg]:rotate-180",
+          className
+        )}
+        {...props}
+      >
+        {children}
+        <ChevronDownIcon className="text-muted-foreground pointer-events-none size-4 shrink-0 translate-y-0.5 transition-transform duration-200" />
+      </AccordionPrimitive.Trigger>
+    </AccordionPrimitive.Header>
+  )
+}
+
+function AccordionContent({
+  className,
+  children,
+  ...props
+}: React.ComponentProps<typeof AccordionPrimitive.Content>) {
+  return (
+    <AccordionPrimitive.Content
+      data-slot="accordion-content"
+      className="data-[state=closed]:animate-accordion-up data-[state=open]:animate-accordion-down overflow-hidden text-sm"
+      {...props}
+    >
+      <div className={cn("pt-0 pb-4", className)}>{children}</div>
+    </AccordionPrimitive.Content>
+  )
+}
+
+export { Accordion, AccordionItem, AccordionTrigger, AccordionContent }
--- a/src/components/ui/alert.tsx
+++ b/src/components/ui/alert.tsx
@ -0,0 +1,66 @@
+import * as React from "react"
+import { cva, type VariantProps } from "class-variance-authority"
+
+import { cn } from "@/lib/utils"
+
+const alertVariants = cva(
+  "relative w-full rounded-lg border px-4 py-3 text-sm grid has-[>svg]:grid-cols-[calc(var(--spacing)*4)_1fr] grid-cols-[0_1fr] has-[>svg]:gap-x-3 gap-y-0.5 items-start [&>svg]:size-4 [&>svg]:translate-y-0.5 [&>svg]:text-current",
+  {
+    variants: {
+      variant: {
+        default: "bg-card text-card-foreground",
+        destructive:
+          "text-destructive bg-card [&>svg]:text-current *:data-[slot=alert-description]:text-destructive/90",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+    },
+  }
+)
+
+function Alert({
+  className,
+  variant,
+  ...props
+}: React.ComponentProps<"div"> & VariantProps<typeof alertVariants>) {
+  return (
+    <div
+      data-slot="alert"
+      role="alert"
+      className={cn(alertVariants({ variant }), className)}
+      {...props}
+    />
+  )
+}
+
+function AlertTitle({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="alert-title"
+      className={cn(
+        "col-start-2 line-clamp-1 min-h-4 font-medium tracking-tight",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function AlertDescription({
+  className,
+  ...props
+}: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="alert-description"
+      className={cn(
+        "text-muted-foreground col-start-2 grid justify-items-start gap-1 text-sm [&_p]:leading-relaxed",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+export { Alert, AlertTitle, AlertDescription }
--- a/src/components/ui/badge.tsx
+++ b/src/components/ui/badge.tsx
@ -0,0 +1,46 @@
+import * as React from "react"
+import { Slot } from "@radix-ui/react-slot"
+import { cva, type VariantProps } from "class-variance-authority"
+
+import { cn } from "@/lib/utils"
+
+const badgeVariants = cva(
+  "inline-flex items-center justify-center rounded-full border px-2 py-0.5 text-xs font-medium w-fit whitespace-nowrap shrink-0 [&>svg]:size-3 gap-1 [&>svg]:pointer-events-none focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px] aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive transition-[color,box-shadow] overflow-hidden",
+  {
+    variants: {
+      variant: {
+        default:
+          "border-transparent bg-primary text-primary-foreground [a&]:hover:bg-primary/90",
+        secondary:
+          "border-transparent bg-secondary text-secondary-foreground [a&]:hover:bg-secondary/90",
+        destructive:
+          "border-transparent bg-destructive text-white [a&]:hover:bg-destructive/90 focus-visible:ring-destructive/20 dark:focus-visible:ring-destructive/40 dark:bg-destructive/60",
+        outline:
+          "text-foreground [a&]:hover:bg-accent [a&]:hover:text-accent-foreground",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+    },
+  }
+)
+
+function Badge({
+  className,
+  variant,
+  asChild = false,
+  ...props
+}: React.ComponentProps<"span"> &
+  VariantProps<typeof badgeVariants> & { asChild?: boolean }) {
+  const Comp = asChild ? Slot : "span"
+
+  return (
+    <Comp
+      data-slot="badge"
+      className={cn(badgeVariants({ variant }), className)}
+      {...props}
+    />
+  )
+}
+
+export { Badge, badgeVariants }
--- a/src/components/ui/button.tsx
+++ b/src/components/ui/button.tsx
@ -0,0 +1,60 @@
+import * as React from "react"
+import { Slot } from "@radix-ui/react-slot"
+import { cva, type VariantProps } from "class-variance-authority"
+
+import { cn } from "@/lib/utils"
+
+const buttonVariants = cva(
+  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-all disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg:not([class*='size-'])]:size-4 shrink-0 [&_svg]:shrink-0 outline-none focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px] aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive",
+  {
+    variants: {
+      variant: {
+        default: "bg-primary text-primary-foreground hover:bg-primary/90",
+        destructive:
+          "bg-destructive text-white hover:bg-destructive/90 focus-visible:ring-destructive/20 dark:focus-visible:ring-destructive/40 dark:bg-destructive/60",
+        outline:
+          "border bg-background shadow-xs hover:bg-accent hover:text-accent-foreground dark:bg-input/30 dark:border-input dark:hover:bg-input/50",
+        secondary:
+          "bg-secondary text-secondary-foreground hover:bg-secondary/80",
+        ghost:
+          "hover:bg-accent hover:text-accent-foreground dark:hover:bg-accent/50",
+        link: "text-primary underline-offset-4 hover:underline",
+      },
+      size: {
+        default: "h-9 px-4 py-2 has-[>svg]:px-3",
+        sm: "h-8 rounded-md gap-1.5 px-3 has-[>svg]:px-2.5",
+        lg: "h-10 rounded-md px-6 has-[>svg]:px-4",
+        icon: "size-9",
+        "icon-sm": "size-8",
+        "icon-lg": "size-10",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "default",
+    },
+  }
+)
+
+function Button({
+  className,
+  variant,
+  size,
+  asChild = false,
+  ...props
+}: React.ComponentProps<"button"> &
+  VariantProps<typeof buttonVariants> & {
+    asChild?: boolean
+  }) {
+  const Comp = asChild ? Slot : "button"
+
+  return (
+    <Comp
+      data-slot="button"
+      className={cn(buttonVariants({ variant, size, className }))}
+      {...props}
+    />
+  )
+}
+
+export { Button, buttonVariants }
--- a/src/components/ui/card.tsx
+++ b/src/components/ui/card.tsx
@ -0,0 +1,92 @@
+import * as React from "react"
+
+import { cn } from "@/lib/utils"
+
+function Card({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card"
+      className={cn(
+        "bg-card text-card-foreground flex flex-col gap-6 rounded-xl border py-6 shadow-sm",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function CardHeader({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-header"
+      className={cn(
+        "@container/card-header grid auto-rows-min grid-rows-[auto_auto] items-start gap-2 px-6 has-data-[slot=card-action]:grid-cols-[1fr_auto] [.border-b]:pb-6",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function CardTitle({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-title"
+      className={cn("leading-none font-semibold", className)}
+      {...props}
+    />
+  )
+}
+
+function CardDescription({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-description"
+      className={cn("text-muted-foreground text-sm", className)}
+      {...props}
+    />
+  )
+}
+
+function CardAction({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-action"
+      className={cn(
+        "col-start-2 row-span-2 row-start-1 self-start justify-self-end",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function CardContent({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-content"
+      className={cn("px-6", className)}
+      {...props}
+    />
+  )
+}
+
+function CardFooter({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="card-footer"
+      className={cn("flex items-center px-6 [.border-t]:pt-6", className)}
+      {...props}
+    />
+  )
+}
+
+export {
+  Card,
+  CardHeader,
+  CardFooter,
+  CardTitle,
+  CardAction,
+  CardDescription,
+  CardContent,
+}
--- a/src/components/ui/separator.tsx
+++ b/src/components/ui/separator.tsx
@ -0,0 +1,28 @@
+"use client"
+
+import * as React from "react"
+import * as SeparatorPrimitive from "@radix-ui/react-separator"
+
+import { cn } from "@/lib/utils"
+
+function Separator({
+  className,
+  orientation = "horizontal",
+  decorative = true,
+  ...props
+}: React.ComponentProps<typeof SeparatorPrimitive.Root>) {
+  return (
+    <SeparatorPrimitive.Root
+      data-slot="separator"
+      decorative={decorative}
+      orientation={orientation}
+      className={cn(
+        "bg-border shrink-0 data-[orientation=horizontal]:h-px data-[orientation=horizontal]:w-full data-[orientation=vertical]:h-full data-[orientation=vertical]:w-px",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+export { Separator }
--- a/src/index.css
+++ b/src/index.css
@ -0,0 +1,151 @@
+@import "tailwindcss";
+
+@custom-variant dark (&:is(.dark *));
+
+:root {
+  font-family: system-ui, Avenir, Helvetica, Arial, sans-serif;
+  line-height: 1.5;
+  font-weight: 400;
+
+  color-scheme: light dark;
+  color: rgba(255, 255, 255, 0.87);
+  background-color: #242424;
+
+  font-synthesis: none;
+  text-rendering: optimizeLegibility;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+  --radius: 0.625rem;
+  --background: oklch(1 0 0);
+  --foreground: oklch(0.145 0 0);
+  --card: oklch(1 0 0);
+  --card-foreground: oklch(0.145 0 0);
+  --popover: oklch(1 0 0);
+  --popover-foreground: oklch(0.145 0 0);
+  --primary: oklch(0.205 0 0);
+  --primary-foreground: oklch(0.985 0 0);
+  --secondary: oklch(0.97 0 0);
+  --secondary-foreground: oklch(0.205 0 0);
+  --muted: oklch(0.97 0 0);
+  --muted-foreground: oklch(0.556 0 0);
+  --accent: oklch(0.97 0 0);
+  --accent-foreground: oklch(0.205 0 0);
+  --destructive: oklch(0.577 0.245 27.325);
+  --border: oklch(0.922 0 0);
+  --input: oklch(0.922 0 0);
+  --ring: oklch(0.708 0 0);
+  --chart-1: oklch(0.646 0.222 41.116);
+  --chart-2: oklch(0.6 0.118 184.704);
+  --chart-3: oklch(0.398 0.07 227.392);
+  --chart-4: oklch(0.828 0.189 84.429);
+  --chart-5: oklch(0.769 0.188 70.08);
+  --sidebar: oklch(0.985 0 0);
+  --sidebar-foreground: oklch(0.145 0 0);
+  --sidebar-primary: oklch(0.205 0 0);
+  --sidebar-primary-foreground: oklch(0.985 0 0);
+  --sidebar-accent: oklch(0.97 0 0);
+  --sidebar-accent-foreground: oklch(0.205 0 0);
+  --sidebar-border: oklch(0.922 0 0);
+  --sidebar-ring: oklch(0.708 0 0);
+}
+
+/* 移除 Vite 模板的全局样式，改由 Tailwind 控制布局与按钮外观 */
+
+@theme inline {
+  --radius-sm: calc(var(--radius) - 4px);
+  --radius-md: calc(var(--radius) - 2px);
+  --radius-lg: var(--radius);
+  --radius-xl: calc(var(--radius) + 4px);
+  --color-background: var(--background);
+  --color-foreground: var(--foreground);
+  --color-card: var(--card);
+  --color-card-foreground: var(--card-foreground);
+  --color-popover: var(--popover);
+  --color-popover-foreground: var(--popover-foreground);
+  --color-primary: var(--primary);
+  --color-primary-foreground: var(--primary-foreground);
+  --color-secondary: var(--secondary);
+  --color-secondary-foreground: var(--secondary-foreground);
+  --color-muted: var(--muted);
+  --color-muted-foreground: var(--muted-foreground);
+  --color-accent: var(--accent);
+  --color-accent-foreground: var(--accent-foreground);
+  --color-destructive: var(--destructive);
+  --color-border: var(--border);
+  --color-input: var(--input);
+  --color-ring: var(--ring);
+  --color-chart-1: var(--chart-1);
+  --color-chart-2: var(--chart-2);
+  --color-chart-3: var(--chart-3);
+  --color-chart-4: var(--chart-4);
+  --color-chart-5: var(--chart-5);
+  --color-sidebar: var(--sidebar);
+  --color-sidebar-foreground: var(--sidebar-foreground);
+  --color-sidebar-primary: var(--sidebar-primary);
+  --color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
+  --color-sidebar-accent: var(--sidebar-accent);
+  --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
+  --color-sidebar-border: var(--sidebar-border);
+  --color-sidebar-ring: var(--sidebar-ring);
+}
+
+.dark {
+  --background: oklch(0.145 0 0);
+  --foreground: oklch(0.985 0 0);
+  --card: oklch(0.205 0 0);
+  --card-foreground: oklch(0.985 0 0);
+  --popover: oklch(0.205 0 0);
+  --popover-foreground: oklch(0.985 0 0);
+  --primary: oklch(0.922 0 0);
+  --primary-foreground: oklch(0.205 0 0);
+  --secondary: oklch(0.269 0 0);
+  --secondary-foreground: oklch(0.985 0 0);
+  --muted: oklch(0.269 0 0);
+  --muted-foreground: oklch(0.708 0 0);
+  --accent: oklch(0.269 0 0);
+  --accent-foreground: oklch(0.985 0 0);
+  --destructive: oklch(0.704 0.191 22.216);
+  --border: oklch(1 0 0 / 10%);
+  --input: oklch(1 0 0 / 15%);
+  --ring: oklch(0.556 0 0);
+  --chart-1: oklch(0.488 0.243 264.376);
+  --chart-2: oklch(0.696 0.17 162.48);
+  --chart-3: oklch(0.769 0.188 70.08);
+  --chart-4: oklch(0.627 0.265 303.9);
+  --chart-5: oklch(0.645 0.246 16.439);
+  --sidebar: oklch(0.205 0 0);
+  --sidebar-foreground: oklch(0.985 0 0);
+  --sidebar-primary: oklch(0.488 0.243 264.376);
+  --sidebar-primary-foreground: oklch(0.985 0 0);
+  --sidebar-accent: oklch(0.269 0 0);
+  --sidebar-accent-foreground: oklch(0.985 0 0);
+  --sidebar-border: oklch(1 0 0 / 10%);
+  --sidebar-ring: oklch(0.556 0 0);
+}
+
+@layer base {
+  * {
+    @apply border-border outline-ring/50;
+  }
+  body {
+    @apply bg-background text-foreground;
+  }
+}
+
+/* 精简动画：仅保留折叠面板所需动画，替代 tw-animate-css */
+@layer utilities {
+  @keyframes accordion-down {
+    from { height: 0 }
+    to { height: var(--radix-accordion-content-height) }
+  }
+  @keyframes accordion-up {
+    from { height: var(--radix-accordion-content-height) }
+    to { height: 0 }
+  }
+  .animate-accordion-down {
+    animation: accordion-down 0.2s ease-out;
+  }
+  .animate-accordion-up {
+    animation: accordion-up 0.2s ease-out;
+  }
+}
--- a/src/lib/utils.ts
+++ b/src/lib/utils.ts
@ -0,0 +1,6 @@
+import { clsx, type ClassValue } from "clsx"
+import { twMerge } from "tailwind-merge"
+
+export function cn(...inputs: ClassValue[]) {
+  return twMerge(clsx(inputs))
+}
--- a/src/main.tsx
+++ b/src/main.tsx
@ -0,0 +1,10 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import './index.css'
+import App from './App.tsx'
+
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+)
--- a/src/utils/codecs/detect.ts
+++ b/src/utils/codecs/detect.ts
@ -0,0 +1,159 @@
+import type { CodecDetail, CodecSupport, CodecStatus, CheckRecord, HardwarePref } from './types'
+
+function nowTs() {
+  return Date.now()
+}
+
+function toOverall(hardware: CodecStatus, software: CodecStatus): CodecStatus {
+  if (hardware === 'supported' || software === 'supported') return 'supported'
+  if (hardware === 'unknown' && software === 'unknown') return 'unknown'
+  return 'unsupported'
+}
+
+const AVC_VARIANTS = ['avc1.42E01E', 'avc1.640028']
+const HEVC_VARIANTS = ['hvc1', 'hev1', 'hvc1.1.6.L93.B0', 'hev1.1.6.L93.B0']
+
+async function sleep(ms: number) {
+  return new Promise((r) => setTimeout(r, ms))
+}
+
+async function tryConfig(
+  codec: string,
+  hardwareAcceleration: HardwarePref,
+  checks: CheckRecord[],
+): Promise<boolean> {
+  // Step 1: isConfigSupported
+  try {
+    const support = await VideoDecoder.isConfigSupported({
+      codec,
+      hardwareAcceleration,
+      optimizeForLatency: false,
+    })
+    checks.push({
+      codec,
+      hardwareAcceleration,
+      phase: 'isConfigSupported',
+      ok: !!support?.supported,
+      result: support ? { supported: support.supported } : undefined,
+    })
+    if (!support?.supported) return false
+  } catch (e) {
+    checks.push({
+      codec,
+      hardwareAcceleration,
+      phase: 'isConfigSupported',
+      ok: false,
+      error: e instanceof Error ? e.message : String(e),
+    })
+    return false
+  }
+
+  // Step 2: configure
+  let errorMsg: string | undefined
+  const decoder = new window.VideoDecoder({
+    output: () => {},
+    error: (e) => {
+      errorMsg = e?.message ?? String(e)
+    },
+  })
+  try {
+    decoder.configure({ codec, hardwareAcceleration, optimizeForLatency: false })
+    // Give the decoder a brief window to surface async errors (if any)
+    await sleep(100)
+    const ok = !errorMsg
+    checks.push({
+      codec,
+      hardwareAcceleration,
+      phase: 'configure',
+      ok,
+      error: errorMsg,
+      result: ok ? { configured: true } : undefined,
+    })
+    return ok
+  } catch (e) {
+    checks.push({
+      codec,
+      hardwareAcceleration,
+      phase: 'configure',
+      ok: false,
+      error: e instanceof Error ? e.message : String(e),
+    })
+    return false
+  } finally {
+    try {
+      decoder.close()
+    } catch {
+      // Ignore close errors
+    }
+  }
+}
+
+async function checkWithPref(
+  variants: string[],
+  hardwareAcceleration: HardwarePref,
+  checks: CheckRecord[],
+): Promise<CodecStatus> {
+  for (const codec of variants) {
+    const ok = await tryConfig(codec, hardwareAcceleration, checks)
+    if (ok) return 'supported'
+  }
+  return 'unsupported'
+}
+
+async function checkCodecDetail(
+  variants: string[],
+  checks: CheckRecord[],
+): Promise<CodecDetail> {
+  // Prefer paths are commonly supported across browsers; use them to infer HW/SW
+  const hardware = await checkWithPref(variants, 'prefer-hardware', checks)
+  const software = await checkWithPref(variants, 'prefer-software', checks)
+  const overall = toOverall(hardware, software)
+  return { hardware, software, overall }
+}
+
+export async function checkAVCDetail(): Promise<CodecDetail> {
+  const checks: CheckRecord[] = []
+  return checkCodecDetail(AVC_VARIANTS, checks)
+}
+
+export async function checkHEVCDetail(): Promise<CodecDetail> {
+  const checks: CheckRecord[] = []
+  return checkCodecDetail(HEVC_VARIANTS, checks)
+}
+
+export async function checkAVC(): Promise<CodecStatus> {
+  const d = await checkAVCDetail()
+  return d.overall
+}
+
+export async function checkHEVC(): Promise<CodecStatus> {
+  const d = await checkHEVCDetail()
+  return d.overall
+}
+
+export async function detectAll(): Promise<CodecSupport> {
+  const checks: CheckRecord[] = []
+  const env = {
+    userAgent: typeof navigator !== 'undefined' ? navigator.userAgent : 'unknown',
+    isSecureContext: typeof window !== 'undefined' ? window.isSecureContext : false,
+    hasVideoDecoder: typeof window !== 'undefined' && 'VideoDecoder' in window,
+  }
+
+  if (!env.isSecureContext || !env.hasVideoDecoder) {
+    return {
+      webCodecs: false,
+      avc: { hardware: 'unknown', software: 'unknown', overall: 'unknown' },
+      hevc: { hardware: 'unknown', software: 'unknown', overall: 'unknown' },
+      details: { env, checks, errors: [], timestamp: nowTs() },
+    }
+  }
+
+  const avc = await checkCodecDetail(AVC_VARIANTS, checks)
+  const hevc = await checkCodecDetail(HEVC_VARIANTS, checks)
+  return {
+    webCodecs: true,
+    avc,
+    hevc,
+    details: { env, checks, timestamp: nowTs() },
+  }
+}
--- a/src/utils/codecs/index.ts
+++ b/src/utils/codecs/index.ts
@ -0,0 +1,2 @@
+export * from './types'
+export * from './detect'
--- a/src/utils/codecs/types.ts
+++ b/src/utils/codecs/types.ts
@ -0,0 +1,37 @@
+export type CodecStatus = 'supported' | 'unsupported' | 'unknown'
+
+export interface CodecDetail {
+  hardware: CodecStatus
+  software: CodecStatus
+  overall: CodecStatus
+}
+
+export type HardwarePref =
+  | 'prefer-hardware'
+  | 'prefer-software'
+  | 'no-preference'
+
+export interface CheckRecord {
+  codec: string
+  hardwareAcceleration?: HardwarePref
+  phase: 'isConfigSupported' | 'configure'
+  ok: boolean
+  result?: unknown
+  error?: string
+}
+
+export interface CodecSupport {
+  webCodecs: boolean
+  avc: CodecDetail
+  hevc: CodecDetail
+  details: {
+    env: {
+      userAgent: string
+      isSecureContext: boolean
+      hasVideoDecoder: boolean
+    }
+    checks: CheckRecord[]
+    errors?: string[]
+    timestamp: number
+  }
+}
--- a/trae/design.md
+++ b/trae/design.md
@ -0,0 +1,109 @@
+# UI 指导文档：WebCodecs AVC/HEVC 判定单页
+
+本页旨在用 React + TailwindCSS + shadcn/ui + TypeScript + Vite 实现“当前页面是否支持 WebCodecs 的 AVC 与 HEVC”的判定与展示。仅做能力判定与结果呈现，不进行视频解码、上传、登录等额外功能。
+
+## 1. 目标与范围
+- 目标：清晰、可靠地展示浏览器对 WebCodecs、AVC(H.264) 与 HEVC(H.265) 的支持状态。
+- 范围：
+  - 首屏自动判定，并支持手动“重新检测”。
+  - 展示支持、非支持、未知三种状态，并提供详细信息（环境、判定过程、错误）。
+  - 仅单页应用，无路由与多页结构。
+- 非目标：
+  - 不做实际视频解码/播放。
+  - 不做账号、权限、国际化切换等。
+
+## 2. 信息架构与布局
+- 顶部：标题与简述
+  - 标题：WebCodecs 编码能力判定
+  - 说明：展示当前环境对 WebCodecs、AVC 与 HEVC 的支持情况
+- 核心卡片（DetectorCard）：
+  - 总览状态行：
+    - WebCodecs：可用/不可用
+    - AVC(H.264)：支持/不支持/未知
+    - HEVC(H.265)：支持/不支持/未知（重点关注）
+  - 操作区：
+    - 按钮：重新检测（Button）
+    - 按钮：复制检测详情（Button，可选）
+  - 详情折叠区（可展开）：
+    - 环境信息：UA、`isSecureContext`、平台信息
+    - 判定细节：各 `VideoDecoder.isConfigSupported` 的输入与返回
+    - 错误信息：异常堆栈、失败原因
+- 底部：
+  - 兼容性声明与提示链接（例如参考文档）
+
+## 3. 组件清单与样式（shadcn/ui + Tailwind）
+- Card：`<Card> <CardHeader> <CardTitle> <CardContent>` 用于包裹判定结果
+- Badge：用于标识状态
+  - 成功（支持）：绿色 `bg-emerald-500` / shadcn `variant="default"` + `text-white`
+  - 失败（不支持）：红色 `bg-red-500` / `variant="destructive"`
+  - 未知：琥珀色或灰色 `bg-amber-500`/`bg-gray-500`
+- Button：主要（重新检测）、次要（复制详情）
+- Separator：分隔信息块
+- Collapsible / Accordion：用于展开判定详情
+- Alert（可选）：在 WebCodecs 不可用或非安全上下文时提示
+
+Tailwind 约定：
+- 容器宽度：`max-w-2xl mx-auto px-4`；移动优先布局。
+- 字体与层级：标题 `text-xl font-semibold`，正文 `text-sm text-muted-foreground`。
+- 状态色统一：支持=绿色、失败=红色、未知=琥珀/灰。
+
+## 4. 状态与数据流
+- 数据源：`utils/codecs` 封装的检测函数（Promise）
+- 类型（页面侧以只读消费）：
+  - `CodecStatus = 'supported' | 'unsupported' | 'unknown'`
+  - `CodecSupport`：
+    - `webCodecs: boolean`
+    - `avc: CodecStatus`
+    - `hevc: CodecStatus`
+    - `details: { env, checks, errors, timestamp }`
+- 生命周期：
+  - 初次渲染：显示加载状态（Skeleton/Spinner），完成后渲染结果。
+  - 重新检测：刷新整个检测流程并更新时间戳。
+- 错误：捕获并在详情区展示，页面用 Alert 简述。
+
+## 5. 交互流程（主要场景）
+1) 首屏加载：
+   - 调用 `detectAll()` -> 返回 `CodecSupport`
+   - 显示三行状态（WebCodecs/AVC/HEVC）与详情入口
+2) 用户点击“重新检测”：
+   - 再次调用 `detectAll()`，展示加载与最新结果
+3) 用户点击“复制检测详情”（可选）：
+   - 将 `details` 序列化为 JSON 并复制至剪贴板
+
+## 6. 响应式与可访问性
+- 响应式：
+  - 移动端：单列卡片；按钮占满或并排但保持可点击区域
+  - 桌面端：保持居中与合理留白
+- 可访问性：
+  - 所有交互元素有可见焦点态（Tailwind focus 样式）
+  - 状态色同时提供文本标签（如“支持/不支持/未知”），避免仅靠颜色传达
+  - 按钮加上 `aria-label`
+
+## 7. 文案与视觉规则
+- 标题：`WebCodecs 编码能力判定`
+- 说明：简述仅判定能力，不做解码测试
+- 状态行文案：
+  - WebCodecs：`可用`/`不可用`
+  - AVC(H.264)：`支持`/`不支持`/`未知`
+  - HEVC(H.265)：`支持`/`不支持`/`未知`
+- 详情区：
+  - 环境信息：UA、安全上下文、平台
+  - 判定过程：每次 `isConfigSupported` 的输入与输出
+  - 错误：异常消息与堆栈（裁剪）
+
+## 8. 错误与边界情况提示
+- 非安全上下文（`!isSecureContext`）：提示必须在 HTTPS 下使用 WebCodecs
+- 浏览器不支持 WebCodecs（如部分 Firefox）：
+  - 顶部 Alert 提示不支持 WebCodecs
+  - AVC/HEVC 状态标为 `未知`
+- HEVC 平台依赖性强：不同系统/浏览器的结果可能不同；详情区给出判定依据
+
+## 9. 组件映射到目录结构
+- 页面：`src/App.tsx`（单页）
+- 组件：`src/components/DetectorCard.tsx`（包含状态、操作与详情）
+- 工具：`src/utils/codecs/*`（判定逻辑与类型）
+
+## 10. 未来扩展（暂不实现）
+- 导出检测报告 JSON
+- 增加更多编码（VP9/AV1）判定
+- 国际化与主题切换
--- a/trae/prd.md
+++ b/trae/prd.md
@ -0,0 +1,114 @@
+# PRD：WebCodecs AVC/HEVC 判定页面
+
+## 1. 背景与目标
+- 背景：不同浏览器/平台对 WebCodecs 的支持不一致，尤其 HEVC(H.265) 支持高度依赖平台与浏览器实现。开发者需要一个简单页面来判定当前环境是否支持 WebCodecs、AVC(H.264) 与 HEVC(H.265)。
+- 目标：构建一个单页应用，使用 WebCodecs 相关 API（主要是 `VideoDecoder.isConfigSupported`）进行判定，给出清晰的结果与可追溯的详情。
+
+## 2. 范围与非目标
+- 范围：
+  - 判定 WebCodecs 可用性
+  - 判定 AVC(H.264) 解码支持
+  - 判定 HEVC(H.265) 解码支持
+  - 展示判定详情（环境、输入配置、返回信息、错误）
+- 非目标：
+  - 不进行视频解码、编码或渲染
+  - 不做登录、权限、国际化、路由、多页
+
+## 3. 用户场景与价值
+- 前端/视频开发者打开页面即可得知当前环境是否能安全地依赖 WebCodecs 的 AVC/HEVC 解码能力，用于后续策略选择（如降级到 H.264、走 MSE 或 WebAssembly 等）。
+
+## 4. 功能描述
+- 首屏自动判定并展示三类状态：WebCodecs、AVC、HEVC。
+- 提供“重新检测”按钮，重新执行全部判定。
+- 在详情中展示：UA、安全上下文（`isSecureContext`）、每次 `isConfigSupported` 的输入/输出、错误信息。
+
+## 5. 技术方案与实现策略
+- 判定基于 WebCodecs：
+  - WebCodecs 可用判定：`typeof window.VideoDecoder !== 'undefined'`
+  - 统一使用 `VideoDecoder.isConfigSupported(config)` 来探测是否支持某种编码配置。
+- AVC 探测建议：
+  - 常见且广泛支持的配置字符串（示例）：
+    - `avc1.42E01E`（Baseline）
+    - `avc1.640028`（High Profile Level 4.0）
+  - 逻辑：若任意代表性配置返回 `supported: true`，则判定为“支持”。若全部返回 `supported: false` 或抛错，则“未支持/未知”。
+- HEVC 探测建议（平台相关）：
+  - 尝试 `hvc1` 与 `hev1` 两种品牌。
+  - 代表性字符串（示例）：
+    - `hvc1.1.6.L93.B0`
+    - `hev1.1.6.L93.B0`
+  - 不同实现对 `description`（codec private data）与 profile-level 的要求可能不同。策略：从简到繁，先试纯 `codec`，再试带 profile-level（如上面的示例）。
+- 安全上下文：
+  - WebCodecs 在非安全上下文可能不可用；`!isSecureContext` 时直接给出提示，并将 AVC/HEVC 标记为 `unknown`。
+- 错误处理：
+  - 统一捕获异常与拒绝，记录在详情中，页面通过 Alert 简述。
+
+### 判定调用示例（伪代码，仅文档说明）
+```ts
+await VideoDecoder.isConfigSupported({
+  codec: 'hvc1.1.6.L93.B0',
+  hardwareAcceleration: 'prefer-hardware',
+});
+```
+
+## 6. 数据结构与接口（由 `utils/codecs` 对外暴露）
+- 类型：
+```ts
+export type CodecStatus = 'supported' | 'unsupported' | 'unknown';
+
+export interface CodecSupport {
+  webCodecs: boolean;
+  avc: CodecStatus;
+  hevc: CodecStatus;
+  details: {
+    env: {
+      userAgent: string;
+      isSecureContext: boolean;
+      hasVideoDecoder: boolean;
+    };
+    checks: Array<{
+      codec: string; // 传入的 codec 字符串
+      result?: any;  // isConfigSupported 的返回（裁剪）
+      ok: boolean;   // 是否成功/支持
+      error?: string;
+    }>;
+    errors?: string[];
+    timestamp: number;
+  };
+}
+```
+- 接口：
+```ts
+export async function detectAll(): Promise<CodecSupport>;
+export async function checkAVC(): Promise<CodecStatus>;
+export async function checkHEVC(): Promise<CodecStatus>;
+```
+
+## 7. 验收标准
+- 在支持 WebCodecs 且支持 HEVC 的浏览器（如部分 Safari/iOS/macOS）显示：
+  - WebCodecs：可用
+  - AVC：支持（大概率）
+  - HEVC：支持
+- 在支持 WebCodecs 但不支持 HEVC 的浏览器（如多数默认配置的 Chrome/Windows）：
+  - WebCodecs：可用
+  - AVC：支持
+  - HEVC：不支持
+- 在不支持 WebCodecs 的浏览器（如部分 Firefox）：
+  - WebCodecs：不可用（Alert 提示）
+  - AVC/HEVC：未知
+- 详情区包含环境、检查输入/输出、错误信息与时间戳。
+
+## 8. 兼容性与风险
+- HEVC 支持强平台依赖，可能需要操作系统编解码器或浏览器实验开关；结果可能随版本变化。
+- 字符串语法（profile-level）在不同实现中解析差异，需在详情中透明记录。
+- 非安全上下文导致 WebCodecs 不可用。
+
+## 9. 依赖与约束
+- 依赖：现代浏览器、HTTPS 环境
+- 技术栈：React + Tailwind + shadcn/ui + TypeScript + Vite
+
+## 10. 发布与度量
+- 发布：静态资源即可部署
+- 度量：
+  - 首屏交互完成时间（粗略）
+  - 判定耗时（检测 Promise 完成时间）
+  - 用户使用“重新检测”与“复制详情”的频次（可选）
--- a/trae/prompts/init.md
+++ b/trae/prompts/init.md
@ -0,0 +1,3 @@
+目标：生成一个webcodecs avc和hevc判定页面，通过webcodecs相关api判定当前web页面是否支持hevc。请专注于该功能，不要做其他功能比如去视频解码，或者登陆之类的。你可以使用react+tailwindcss+shdcn+typescript+vite。做一个单页应用即可。Webcodecs相关判定尽量封装到一个目录中(utils/codecs)，在页面中调用即可。
+
+任务执行：先生成UI指导文档到./trae/design.md，列出功能设计./trae/prd.md, 然后进行计划./trae/tasks/README.md，最后拆解为小功能点./trae/tasks/task01, ./trae/tasks/task02...。在我下指令前，不要进一步实施。
--- a/trae/tasks/README.md
+++ b/trae/tasks/README.md
@ -0,0 +1,37 @@
+# 任务计划（Roadmap）
+
+本项目分为五个阶段，当前仅完成文档交付，等待指令后再实施。
+
+## 阶段 0：文档
+- 产出：`./trae/design.md`、`./trae/prd.md`、`./trae/tasks/*`
+- 状态：已完成
+
+## 阶段 1：项目脚手架
+- 使用 Vite + React + TypeScript 初始化项目
+- 集成 TailwindCSS 与 shadcn/ui 组件库
+- 基础目录搭建：`src/components`、`src/utils/codecs`
+
+## 阶段 2：判定模块（utils/codecs）
+- 封装 WebCodecs 判定逻辑：`detectAll`、`checkAVC`、`checkHEVC`
+- 设计类型与返回结构，记录判定详情（环境、检查、错误、时间戳）
+
+## 阶段 3：UI 页面实现
+- 单页 App：渲染判定结果卡片、操作按钮、详情折叠
+- 统一状态色与文案，提供复制详情能力（可选）
+
+## 阶段 4：验证与交付
+- 基本跨浏览器验证（Chrome/Edge/Safari/Firefox）
+- 打包与静态部署（如 `dist/`）
+
+---
+
+## 环境准备
+- Node.js >= 18
+- 包管理器：npm 或 pnpm
+- 浏览器：最新版 Chrome/Edge/Safari/Firefox
+
+## 执行顺序与里程碑
+1. 初始化项目与 UI 库（Task01）
+2. 封装判定模块（Task02）
+3. 实现单页 UI（后续 Task）
+4. 验证与交付（后续 Task）
--- a/trae/tasks/task01.md
+++ b/trae/tasks/task01.md
@ -0,0 +1,32 @@
+# Task01：项目初始化与 UI 库集成
+
+## 目标
+- 使用 Vite + React + TypeScript 创建项目骨架
+- 集成 TailwindCSS 与 shadcn/ui，准备基础组件（Card/Badge/Button/Alert/Accordion/Separator）
+
+## 步骤（计划）
+1) 初始化 Vite 项目（在 `g:\work\projects\ai-stuff\test_webcodecs` 目录内）：
+   - `npm create vite@latest . -- --template react-ts`
+   - `npm install`
+2) 安装并配置 TailwindCSS：
+   - `npm install -D tailwindcss postcss autoprefixer`
+   - `npx tailwindcss init -p`
+   - Tailwind 配置：`content` 指向 `./index.html` 与 `./src/**/*.{ts,tsx}`
+   - 在 `src/index.css` 添加：`@tailwind base; @tailwind components; @tailwind utilities;`
+3) 初始化 shadcn/ui：
+   - `npx shadcn-ui@latest init`
+   - 选择 Vite + React + TypeScript 模板，路径默认 `./src/components/ui`
+   - 添加组件：
+     - `npx shadcn-ui@latest add button card badge alert accordion separator`
+4) 建立基础目录：
+   - `src/components/DetectorCard.tsx`（空组件占位）
+   - `src/utils/codecs/`（空目录占位）
+
+## 验收标准
+- `npm run dev` 能启动并渲染示例页面
+- Tailwind 与 shadcn/ui 样式正常（按钮与卡片能显示）
+- 存在 `src/utils/codecs` 目录为后续实现准备
+
+## 产出
+- Vite + React + TS 基础工程
+- Tailwind 与 shadcn/ui 已集成，组件可用
--- a/trae/tasks/task02.md
+++ b/trae/tasks/task02.md
@ -0,0 +1,103 @@
+# Task02：封装 WebCodecs 判定模块（utils/codecs）
+
+## 目标
+- 在 `src/utils/codecs` 封装 WebCodecs 判定逻辑
+- 提供统一接口：`detectAll`、`checkAVC`、`checkHEVC`
+- 返回结构包含环境、检查细节、错误与时间戳，便于 UI 展示
+- 增强输出：分别判定 H.264(AVC) 与 H.265(HEVC) 的“硬解/软解”支持情况
+- 可靠性校验：在 `isConfigSupported` 为真后，实际执行 `VideoDecoder.configure(config)`，若抛错或触发 `error` 回调，则视为“不支持”
+
+## 目录结构（计划）
+- `src/utils/codecs/types.ts`（类型定义）
+- `src/utils/codecs/detect.ts`（具体判定逻辑）
+- `src/utils/codecs/index.ts`（导出聚合）
+
+## 类型与接口（拟定）
+```ts
+export type CodecStatus = 'supported' | 'unsupported' | 'unknown';
+
+export interface CodecDetail {
+  hardware: CodecStatus; // 硬件解码支持
+  software: CodecStatus; // 软件解码支持
+  overall: CodecStatus;  // hardware 或 software 任一为 supported 则为 supported
+}
+
+export interface CodecSupport {
+  webCodecs: boolean;
+  avc: CodecDetail;
+  hevc: CodecDetail;
+  details: {
+    env: {
+      userAgent: string;
+      isSecureContext: boolean;
+      hasVideoDecoder: boolean;
+    };
+    checks: Array<{
+      codec: string;
+      hardwareAcceleration?:
+        | 'require-hardware'
+        | 'require-software'
+        | 'prefer-hardware'
+        | 'prefer-software'
+        | 'no-preference';
+      phase: 'isConfigSupported' | 'configure';
+      ok: boolean;
+      result?: unknown; // isConfigSupported 返回或 configure 成功标记
+      error?: string;   // 异常或 VideoDecoder error 回调信息
+    }>;
+    errors?: string[];
+    timestamp: number;
+  };
+}
+
+export async function detectAll(): Promise<CodecSupport>;
+export async function checkAVCDetail(): Promise<CodecDetail>;
+export async function checkHEVCDetail(): Promise<CodecDetail>;
+// 可选：保留聚合态接口（返回 overall）
+export async function checkAVC(): Promise<CodecStatus>;
+export async function checkHEVC(): Promise<CodecStatus>;
+```
+
+## 判定逻辑（思路）
+1) WebCodecs 可用性：
+   - `const hasVideoDecoder = typeof window.VideoDecoder !== 'undefined'`
+   - `const secure = isSecureContext`
+   - 若 `!secure || !hasVideoDecoder`：返回 `webCodecs=false`，`avc='unknown'`，`hevc='unknown'`
+2) AVC 检查（代表性配置 + 硬解/软解）：
+   - 代表性 `codec`：`avc1.42E01E`（Baseline）、`avc1.640028`（High L4.0）
+   - 对每个 `codec` 分别尝试：
+     - `hardwareAcceleration: 'require-hardware'`（硬解）
+     - `hardwareAcceleration: 'require-software'`（软解）
+   - 先调用 `await VideoDecoder.isConfigSupported(config)`；若 `supported: true`，继续创建 `new VideoDecoder({ output, error })` 并执行 `decoder.configure(configWithDims)`：
+     - 为避免不完整配置导致误判，`configWithDims` 需包含最小维度：`codedWidth: 16, codedHeight: 16`，`optimizeForLatency: false`
+     - 若 `configure` 抛错或随后触发 `error` 回调（建议等待 ~300ms），则该路径判定为 `unsupported`
+     - 成功则记录为 `supported`
+   - 若某实现忽略 `hardwareAcceleration`（常见）：
+     - 回退策略：尝试 `prefer-hardware`/`prefer-software` 并记录结果为“弱证据”，UI 仍以严格 `require-*` 结果为准；弱证据仅进入 `details`
+3) HEVC 检查（代表性配置 + 硬解/软解）：
+   - 代表性 `codec`：`hvc1`、`hev1`，以及带 profile-level 的示例：`hvc1.1.6.L93.B0`、`hev1.1.6.L93.B0`
+   - 检查流程同 AVC：分别对硬解/软解进行 `isConfigSupported` 与 `configure` 双重校验，维度与等待策略一致
+   - 注意：不同平台对 `description` 要求不一；本版默认不提供 `description`，如遇特定浏览器需补充，可在 `details` 记录并作为特例处理
+4) 记录详情：
+   - `env`：UA、`isSecureContext`、`hasVideoDecoder`
+   - `checks`：每次调用的 `codec`、`hardwareAcceleration`、阶段（`isConfigSupported`/`configure`）、结果/错误
+   - `timestamp`：毫秒时间戳
+
+## 错误处理与未知态
+- `isConfigSupported` 可能抛错或返回不明确信息，统一捕获并记录
+- 条件不足（如非安全上下文、缺少 API）时标记为 `unknown`
+- 在 `isConfigSupported` 为真后仍需 `configure`：若抛错或 `error` 回调被触发（在约定时间窗内），则视为“不支持”
+- 统一在完成检查后 `decoder.close()`，避免资源泄漏
+
+## 测试计划（开发机验证）
+- Chrome（Windows/macOS）：
+  - WebCodecs 可用；AVC 软件解码支持，硬解由平台驱动与浏览器策略决定；HEVC 通常不支持（硬/软均可能失败）
+- Safari（macOS/iOS 16+）：
+  - WebCodecs 与 HEVC 可能支持；对 HEVC 硬解/软解的结果依平台版本而异；AVC 支持
+- Firefox：
+  - WebCodecs 可能不可用；AVC/HEVC 显示未知
+
+## 验收标准
+- `detectAll()` 返回结构符合最新类型定义（含 `CodecDetail` 的硬解/软解与 `overall`）
+- `details.checks` 对 AVC/HEVC 均包含：硬解(`require-hardware`)与软解(`require-software`)的 `isConfigSupported` 和 `configure` 两阶段记录
+- 在上述浏览器场景下，页面能分别展示 H.264/H.265 的“硬解/软解/总体”状态；Safari 的 HEVC 正确反映平台支持；Chrome/Windows 的 HEVC 显示不支持或未知
--- a/tsconfig.app.json
+++ b/tsconfig.app.json
@ -0,0 +1,32 @@
+{
+  "compilerOptions": {
+    "baseUrl": ".",
+    "paths": {
+      "@/*": ["./src/*"]
+    },
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
+    "target": "ES2022",
+    "useDefineForClassFields": true,
+    "lib": ["ES2022", "DOM", "DOM.Iterable"],
+    "module": "ESNext",
+    "types": ["vite/client"],
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+    "jsx": "react-jsx",
+
+    /* Linting */
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "erasableSyntaxOnly": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedSideEffectImports": true
+  },
+  "include": ["src"]
+}
--- a/tsconfig.json
+++ b/tsconfig.json
@ -0,0 +1,13 @@
+{
+  "compilerOptions": {
+    "baseUrl": ".",
+    "paths": {
+      "@/*": ["./src/*"]
+    }
+  },
+  "files": [],
+  "references": [
+    { "path": "./tsconfig.app.json" },
+    { "path": "./tsconfig.node.json" }
+  ]
+}
--- a/tsconfig.node.json
+++ b/tsconfig.node.json
@ -0,0 +1,26 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
+    "target": "ES2023",
+    "lib": ["ES2023"],
+    "module": "ESNext",
+    "types": ["node"],
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+
+    /* Linting */
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "erasableSyntaxOnly": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedSideEffectImports": true
+  },
+  "include": ["vite.config.ts"]
+}
--- a/vite.config.ts
+++ b/vite.config.ts
@ -0,0 +1,37 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+import tailwindcss from '@tailwindcss/vite'
+import { fileURLToPath, URL } from 'node:url'
+
+// https://vite.dev/config/
+const config = defineConfig({
+  plugins: [react(), tailwindcss()],
+  resolve: {
+    alias: {
+      '@': fileURLToPath(new URL('./src', import.meta.url)),
+      // Reduce bundle size by aliasing React to Preact
+      'react': 'preact/compat',
+      'react-dom': 'preact/compat',
+      'react-dom/test-utils': 'preact/test-utils',
+      'react/jsx-runtime': 'preact/jsx-runtime',
+    },
+  },
+  build: {
+    sourcemap: false,
+    target: 'es2018',
+    rollupOptions: {
+      output: {
+        // Split vendor libraries to avoid inflating the main chunk
+        manualChunks(id) {
+          if (id.includes('node_modules')) {
+            if (id.includes('preact') || id.includes('react')) return 'vendor'
+            if (id.includes('@radix-ui')) return 'radix'
+          }
+          return undefined
+        },
+      },
+    },
+  },
+})
+
+export { config as default}
				`@ -0,0 +1 @@`
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