Update server.js

server.js

@@ -171,7 +171,8 @@ app.post('/render', async (req, res) => {
             // --------------------------------------
             // SEGMENTED BATCH RENDERING
             // --------------------------------------
-            const BATCH_SIZE = 40; // Render 40 scenes at a time
+            // CRASH FIX: Reduce batch size to 10 to prevent OOM
+            const BATCH_SIZE = 10;
             const totalBatches = Math.ceil(httpScenes.length / BATCH_SIZE);
             const partFiles = [];
 
@@ -209,7 +210,7 @@ app.post('/render', async (req, res) => {
                     inputProps: { scenes: batchScenes, settings },
                     chromiumOptions: {
                         executablePath: process.env.CHROME_BIN || '/usr/bin/google-chrome-stable',
-                        enableMultiProcessRendering: true,
+                        enableMultiProcessRendering: false, // STABILITY: Single process saves RAM
                         args: [
                             '--no-sandbox',
                             '--disable-dev-shm-usage',
@@ -219,8 +220,8 @@ app.post('/render', async (req, res) => {
                             '--ignore-gpu-blocklist',
                         ]
                     },
-                    concurrency: 4,
-                    disallowParallelEncoding: false,
+                    concurrency: 1, // STABILITY: Render one frame at a time
+                    disallowParallelEncoding: true, // STABILITY: Reduce encoding memory pressure
                     onProgress: ({ progress }) => {
                         const percent = Math.round(progress * 100);
                         if (percent !== lastLoggedPercent && percent % 10 === 0) {