Auto-detect and fix inverted colors

- Detect inverted colors by checking mean brightness
- Automatically invert if mean > 0.7 (indicating mostly white/bright)
- Print warning when color correction is applied

videogen.py

@@ -10188,6 +10188,14 @@ def main(args):
                         if frames.min() < 0:
                             # Convert from [-1, 1] to [0, 1]
                             frames = (frames + 1.0) / 2.0
+                        
+                        # Check if colors appear inverted (mostly dark images mean inverted)
+                        # Inverted images have mean > 0.5 when they should be < 0.5
+                        mean_val = np.mean(frames)
+                        if mean_val > 0.7:  # Likely inverted
+                            print(f"  ⚠️  Detected inverted colors (mean={mean_val:.2f}), correcting...")
+                            frames = 1.0 - frames
+                        
                         # Now convert from [0, 1] to [0, 255]
                         frames = np.clip(frames, 0.0, 1.0) * 255
                         frames = frames.astype(np.uint8)