diff --git a/public/app.js b/public/app.js
index fb2d00f..62b0f85 100644
--- a/public/app.js
+++ b/public/app.js
@@ -1783,10 +1783,14 @@
     renderCanvas.height = targetHeight;
     const renderCtx = renderCanvas.getContext('2d', { alpha: true, willReadFrequently: true });
 
-    // Determine Bitrate based on Resolution
-    let videoBitrate = 25_000_000; // 25 Mbps default for 1080p
-    if (targetWidth >= 3840) videoBitrate = 65_000_000; // 65 Mbps for 4K
-    else if (targetWidth <= 1280) videoBitrate = 14_000_000;
+    // Determine Bitrate based on Resolution & Mode
+    let videoBitrate = 20_000_000; // 20 Mbps default
+    if (options && options.returnBlobOnly) {
+      videoBitrate = (targetWidth >= 3840) ? 35_000_000 : (targetWidth <= 1280 ? 8_000_000 : 14_000_000);
+    } else {
+      if (targetWidth >= 3840) videoBitrate = 50_000_000;
+      else if (targetWidth <= 1280) videoBitrate = 10_000_000;
+    }
 
     // Verify WebCodecs support
     const hasWebCodecs = (typeof VideoEncoder !== 'undefined' && typeof VideoFrame !== 'undefined');
@@ -2160,6 +2164,9 @@
             }
           } else {
             let errMsg = `Server antwortete mit Status ${xhr.status}`;
+            if (xhr.status === 408) {
+              errMsg = 'Server Timeout (408): Die Verbindung zum Server wurde unterbrochen. Bitte stelle sicher, dass der Server mit den neuesten Updates läuft oder wähle "WebM VP9 Alpha" für direkten 120 FPS Export ohne Server-Upload.';
+            }
             try {
               const errData = JSON.parse(xhr.responseText);
               if (errData.error) errMsg = errData.error;
diff --git a/server.mjs b/server.mjs
index 53e3622..39857eb 100644
--- a/server.mjs
+++ b/server.mjs
@@ -60,6 +60,14 @@ const upload = multer({
 });
 
 app.use(cors());
+
+// Disable request timeouts for large media uploads and FFmpeg transcoding
+app.use((req, res, next) => {
+  req.setTimeout(0);
+  res.setTimeout(0);
+  next();
+});
+
 app.use(express.json({ limit: '50mb' }));
 app.use(express.urlencoded({ extended: true, limit: '50mb' }));
 app.use(express.static(path.join(__dirname, 'public')));
@@ -468,8 +476,8 @@ app.post('/api/export/cancel/:id', (req, res) => {
   res.json({ status: 'cancelled' });
 });
 
-// Start Server
-app.listen(PORT, '0.0.0.0', () => {
+// Start Server with infinite timeouts for large file uploads & transcoding
+const server = app.listen(PORT, '0.0.0.0', () => {
   console.log(`
 ╔═══════════════════════════════════════════════════════════════╗
 ║                          ORFEL VIZ                            ║
@@ -479,3 +487,9 @@ app.listen(PORT, '0.0.0.0', () => {
 ╚═══════════════════════════════════════════════════════════════╝
   `);
 });
+
+// Configure Node.js HTTP Server timeouts (prevents HTTP 408 Request Timeout during uploads)
+server.timeout = 0; // Disable socket inactivity timeout
+server.keepAliveTimeout = 1800000; // 30 minutes
+server.headersTimeout = 1860000; // 31 minutes (must exceed keepAliveTimeout)
+server.requestTimeout = 0; // 0 disables request timeout in Node.js 18+