fix some stuff

vr180_matting/vr180_processor.py

@@ -113,8 +113,23 @@ class VR180Processor(VideoProcessor):
         left_eye_frames = []
         right_eye_frames = []
         
-        for frame in frames:
+        for i, frame in enumerate(frames):
             left, right = self.split_sbs_frame(frame)
+            
+            # Debug: Check if frames are valid
+            if i == 0:  # Only debug first frame
+                print(f"Original frame shape: {frame.shape}")
+                print(f"Left eye shape: {left.shape}")
+                print(f"Right eye shape: {right.shape}")
+                print(f"Left eye min/max: {left.min()}/{left.max()}")
+                print(f"Right eye min/max: {right.min()}/{right.max()}")
+            
+            # Validate frames
+            if left.size == 0:
+                raise RuntimeError(f"Left eye frame {i} is empty")
+            if right.size == 0:
+                raise RuntimeError(f"Right eye frame {i} is empty")
+            
             left_eye_frames.append(left)
             right_eye_frames.append(right)
         
@@ -170,13 +185,22 @@ class VR180Processor(VideoProcessor):
             # Save frames as individual images
             print("Saving frames as images...")
             for i, frame in enumerate(eye_frames):
+                # Check if frame is empty
+                if frame.size == 0:
+                    raise RuntimeError(f"Frame {i} is empty (size=0)")
+                
                 # Ensure frame is uint8
                 if frame.dtype != np.uint8:
                     frame = frame.astype(np.uint8)
                 
+                # Debug first frame
+                if i == 0:
+                    print(f"First frame to save: shape={frame.shape}, dtype={frame.dtype}, empty={frame.size == 0}")
+                
                 frame_path = temp_frames_dir / f"frame_{i:06d}.png"
                 success = cv2.imwrite(str(frame_path), frame)
                 if not success:
+                    print(f"Frame {i} details: shape={frame.shape}, dtype={frame.dtype}, size={frame.size}")
                     raise RuntimeError(f"Failed to save frame {i} as image")
                 
                 if i % 50 == 0:
@@ -184,13 +208,16 @@ class VR180Processor(VideoProcessor):
             
             # Use ffmpeg to create video from images
             import subprocess
+            # Use the original video's framerate
+            original_fps = getattr(self, 'fps', 30.0)
             ffmpeg_cmd = [
                 'ffmpeg', '-y',  # -y to overwrite output file
-                '-framerate', '30',
+                '-framerate', str(original_fps),
                 '-i', str(temp_frames_dir / 'frame_%06d.png'),
                 '-c:v', 'libx264',
                 '-pix_fmt', 'yuv420p',
-                '-crf', '23',
+                '-crf', '18',  # Higher quality (lower CRF)
+                '-preset', 'slow',  # Better compression
                 str(temp_video_path)
             ]