docs: use .mp4 extension in recording examples

playwriter/src/mcp.test.ts

@@ -2634,7 +2634,7 @@ describe('MCP Server Tests', () => {
         })
         await new Promise(r => setTimeout(r, 200))
 
-        const outputPath = path.join(process.cwd(), 'tmp', 'test-recording.webm')
+        const outputPath = path.join(process.cwd(), 'tmp', 'test-recording.mp4')
         if (!fs.existsSync(path.dirname(outputPath))) {
             fs.mkdirSync(path.dirname(outputPath), { recursive: true })
         }

playwriter/src/skill.md

@@ -429,7 +429,7 @@ Labels are color-coded: yellow=links, orange=buttons, coral=inputs, pink=checkbo
 // Start recording - outputPath must be specified upfront
 await startRecording({ 
   page, 
-  outputPath: './recording.webm',
+  outputPath: './recording.mp4',
   frameRate: 30,        // default: 30
   audio: false,         // default: false (tab audio)
   videoBitsPerSecond: 2500000  // 2.5 Mbps