Update server.js

server.js

@@ -19,23 +19,31 @@ app.post('/render', async (req, res) => {
 
     const composition = await selectComposition({
       serveUrl: bundled,
-      id: 'VideoComposition', // match your Composition id in src/Root.tsx
+      id: 'VideoComposition', // MUST MATCH your index.tsx Composition id
       inputProps,
+      onBrowserDownload: (progress) => {
+        console.log(`Chrome download progress: ${progress.percent.toFixed(2)}%`);
+      },
     });
 
+    console.log('=== SCENES TO RENDER ===', inputProps.script?.scenes || []);
+
     const outputPath = path.join(OUTPUT_DIR, `${composition.id}.mp4`);
 
     await renderMedia({
       serveUrl: bundled,
       composition,
       outputLocation: outputPath,
-      chromiumOptions: { enableMultiProcessOnLinux: true },
+      chromiumOptions: {
+        enableMultiProcessOnLinux: true,
+        args: ['--no-sandbox', '--disable-setuid-sandbox'],
+      },
       inputProps,
     });
 
     res.download(outputPath);
   } catch (err) {
-    console.error(err);
+    console.error('Render error:', err);
     res.status(500).json({ error: err.message });
   }
 });