testforai/n8n.html at main · 123hi123/testforai · GitHub

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<!DOCTYPE html>
<html lang="zh-TW">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>n8n與p5.js視頻生成工作流</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            line-height: 1.6;
            margin: 0;
            padding: 20px;
            background-color: #f5f5f5;
        }
        .container {
            max-width: 900px;
            margin: 0 auto;
            background-color: white;
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        h1 {
            color: #333;
            text-align: center;
            margin-bottom: 30px;
        }
        .workflow {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        .step {
            width: 100%;
            margin-bottom: 30px;
            padding: 15px;
            border: 1px solid #ddd;
            border-radius: 5px;
            background-color: #f9f9f9;
        }
        .step-header {
            display: flex;
            align-items: center;
            margin-bottom: 10px;
        }
        .step-number {
            background-color: #4CAF50;
            color: white;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 10px;
            font-weight: bold;
        }
        .step-title {
            font-weight: bold;
            font-size: 18px;
        }
        .code {
            background-color: #f1f1f1;
            padding: 15px;
            border-radius: 5px;
            font-family: monospace;
            overflow-x: auto;
            white-space: pre-wrap;
        }
        .arrow {
            font-size: 24px;
            margin: 10px 0;
        }
        .output-preview {
            border: 1px dashed #ccc;
            padding: 10px;
            text-align: center;
        }
        .output-preview img {
            max-width: 100%;
            height: auto;
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>n8n與p5.js視頻生成工作流</h1>

        <div class="workflow">
            <div class="step">
                <div class="step-header">
                    <div class="step-number">1</div>
                    <div class="step-title">輸入p5.js代碼</div>
                </div>
                <p>通過Webhook節點或手動輸入p5.js代碼</p>
                <div class="code">
// p5.js代碼範例
function setup() {
  createCanvas(400, 400);
  frameRate(30);
}

function draw() {
  background(220);

  // 畫一個隨時間移動的圓形
  let t = frameCount * 0.05;
  let x = width/2 + 100 * cos(t);
  let y = height/2 + 100 * sin(t);

  fill(255, 100, 100);
  ellipse(x, y, 50, 50);

  // 添加一些動態線條
  stroke(0, 100, 200);
  strokeWeight(2);
  for(let i = 0; i < 10; i++) {
    let lineX = width/2 + 150 * cos(t + i * 0.5);
    let lineY = height/2 + 150 * sin(t + i * 0.5);
    line(width/2, height/2, lineX, lineY);
  }
}
                </div>
            </div>

            <div class="arrow">⬇️</div>

            <div class="step">
                <div class="step-header">
                    <div class="step-number">2</div>
                    <div class="step-title">執行代碼節點</div>
                </div>
                <p>使用Code節點或Execute Command節點處理p5.js代碼</p>
                <div class="code">
// n8n中的JavaScript代碼節點範例
const p5Code = items[0].json.p5Code;

// 生成一個HTML文件，嵌入p5.js和用戶代碼
const htmlContent = `
<!DOCTYPE html>
<html>
<head>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.4.0/p5.js"></script>
  <script src="https://unpkg.com/p5.js-screen-capture"></script>
  <style>body { margin: 0; overflow: hidden; }</style>
</head>
<body>
  <script>
    ${p5Code}

    // 添加錄製功能
    let capture;
    let isRecording = false;

    function keyPressed() {
      if (key === 'r') {
        if (!isRecording) {
          capture = new p5ScreenCapture(this);
          capture.start();
          isRecording = true;
        } else {
          capture.stop();
          isRecording = false;
        }
      }
    }
  </script>
</body>
</html>
`;

// 保存HTML文件到臨時位置
const fs = require('fs');
const path = '/tmp/p5_sketch.html';
fs.writeFileSync(path, htmlContent);

// 返回文件路徑供下一個節點使用
return [
  {
    json: {
      htmlPath: path
    }
  }
];
                </div>
            </div>

            <div class="arrow">⬇️</div>

            <div class="step">
                <div class="step-header">
                    <div class="step-number">3</div>
                    <div class="step-title">渲染視頻</div>
                </div>
                <p>使用Puppeteer或其他工具渲染p5.js代碼並生成視頻</p>
                <div class="code">
// Execute Command節點中的命令
const htmlPath = $input.item.json.htmlPath;
const outputPath = '/tmp/output_video.mp4';

// 使用Puppeteer運行HTML並錄製視頻
const puppeteerScript = `
const puppeteer = require('puppeteer');
const path = require('path');

(async () => {
  const browser = await puppeteer.launch({
    headless: true,
    args: ['--no-sandbox', '--disable-setuid-sandbox']
  });
  const page = await browser.newPage();

  // 設置視窗大小
  await page.setViewport({ width: 400, height: 400 });

  // 載入HTML文件
  await page.goto('file://${htmlPath}', { waitUntil: 'networkidle0' });

  // 等待頁面載入完成
  await page.waitForTimeout(1000);

  // 開始錄製
  await page.keyboard.press('r');

  // 錄製10秒
  await page.waitForTimeout(10000);

  // 停止錄製
  await page.keyboard.press('r');

  // 等待視頻生成
  await page.waitForTimeout(2000);

  // 關閉瀏覽器
  await browser.close();
})();
`;

// 執行Puppeteer腳本
const puppeteerScriptPath = '/tmp/puppeteer_script.js';
fs.writeFileSync(puppeteerScriptPath, puppeteerScript);
execSync('node ' + puppeteerScriptPath);

// 使用FFmpeg處理視頻
execSync('ffmpeg -i /tmp/p5_capture.webm -c:v libx264 -preset fast -crf 22 -c:a aac -b:a 128k ' + outputPath);

return [
  {
    json: {
      videoPath: outputPath
    }
  }
];
                </div>
            </div>

            <div class="arrow">⬇️</div>

            <div class="step">
                <div class="step-header">
                    <div class="step-number">4</div>
                    <div class="step-title">輸出結果</div>
                </div>
                <p>將生成的視頻保存到本地或上傳到雲端存儲</p>
                <div class="code">
// 使用HTTP Request節點上傳視頻
// 或使用Write Binary File節點保存到本地

// 返回視頻URL或文件路徑
return [
  {
    json: {
      status: "success",
      message: "Processing視頻生成完成",
      videoUrl: "https://example.com/videos/generated_p5_video.mp4"
    }
  }
];
                </div>

                <div class="output-preview">
                    <h3>生成的視頻預覽</h3>
                    <img src="data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNDAwIiBoZWlnaHQ9IjQwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxyZWN0IHdpZHRoPSI0MDAiIGhlaWdodD0iNDAwIiBmaWxsPSIjZGNkY2RjIiAvPgogICAgPGNpcmNsZSBjeD0iMjUwIiBjeT0iMjAwIiByPSI1MCIgZmlsbD0iI2ZmNjQ2NCIgLz4KICAgIDxsaW5lIHgxPSIyMDAiIHkxPSIyMDAiIHgyPSIzMDAiIHkyPSIxMDAiIHN0cm9rZT0iIzAwNjRjOCIgc3Ryb2tlLXdpZHRoPSIyIiAvPgogICAgPGxpbmUgeDE9IjIwMCIgeTE9IjIwMCIgeDI9IjMzMCIgeTI9IjE4MCIgc3Ryb2tlPSIjMDA2NGM4IiBzdHJva2Utd2lkdGg9IjIiIC8+CiAgICA8bGluZSB4MT0iMjAwIiB5MT0iMjAwIiB4Mj0iMzIwIiB5Mj0iMjUwIiBzdHJva2U9IiMwMDY0YzgiIHN0cm9rZS13aWR0aD0iMiIgLz4KICAgIDx0ZXh0IHg9IjIwMCIgeT0iMzgwIiB0ZXh0LWFuY2hvcj0ibWlkZGxlIiBmb250LWZhbWlseT0iQXJpYWwiIGZvbnQtc2l6ZT0iMTYiPnAuanMg5Yqg6LyJ5YWJ55qE5YuV55Wl5ris6KaL77yI6KaB5piv5Y+v5Yqg6LyJ55qE5YWJ55qE77yJPC90ZXh0Pgo8L3N2Zz4=" alt="p5.js視頻預覽">
                    <p><i>注意：這是視頻的單幀示意圖，實際輸出是動態視頻</i></p>
                </div>
            </div>
        </div>
    </div>
</body>
</html>