Update app.py

app.py

@@ -725,15 +725,15 @@ def process_video_file(video_file, analysis_types):
     
     # Create video writer with higher quality settings
     try:
-        # First try H.264 codec (most widely compatible)
-        if cv2.__version__.startswith('4'):
-            fourcc = cv2.VideoWriter_fourcc(*'avc1')  # H.264 codec
-        else:
-            # Fallback to older codec naming
-            fourcc = cv2.VideoWriter_fourcc(*'H264')
+        # Try XVID first (widely available)
+        fourcc = cv2.VideoWriter_fourcc(*'XVID')
     except Exception:
-        # If H.264 isn't available, fall back to MP4V
-        fourcc = cv2.VideoWriter_fourcc(*'mp4v')
+        # If that fails, try Motion JPEG
+        try:
+            fourcc = cv2.VideoWriter_fourcc(*'MJPG')
+        except Exception:
+            # Last resort - use uncompressed
+            fourcc = cv2.VideoWriter_fourcc(*'DIB ')  # Uncompressed RGB
     out = cv2.VideoWriter(output_path, fourcc, output_fps, (width, height), isColor=True)
     
     # Process every Nth frame to reduce API calls but increase from 10 to 5 for more detail