refactor(main.py): update video rendering to handle asynchronous rendering and improve debug logging

croppa/main.py

@@ -2031,7 +2031,38 @@ class VideoEditor:
                     
                     print(f"DEBUG: Created temp file: {temp_path}")
                     print("Rendering to temporary file first...")
-                    success = self.render_video_sync(temp_path)
+                    
+                    # Start render and wait for completion
+                    if not self.render_video(temp_path):
+                        success = False
+                    else:
+                        print("Waiting for render to complete...")
+                        # Wait for the render thread to complete
+                        while self.render_thread and self.render_thread.is_alive():
+                            # Process progress updates from the render thread
+                            self.update_render_progress()
+                            time.sleep(0.1)  # Small delay to avoid busy waiting
+                        
+                        # Check if render was successful by looking at the final progress update
+                        try:
+                            # Get the last progress update to check if it completed successfully
+                            while True:
+                                update_type, text, progress, fps = self.render_progress_queue.get_nowait()
+                                if update_type == "complete":
+                                    print(f"Render completed: {text}")
+                                    success = True
+                                    break
+                                elif update_type == "error":
+                                    print(f"Render failed: {text}")
+                                    success = False
+                                    break
+                                elif update_type == "cancelled":
+                                    print("Render was cancelled")
+                                    success = False
+                                    break
+                        except queue.Empty:
+                            # No more updates, assume it completed
+                            success = True
                     
                     if success:
                         print("Replacing original file...")