backend

app.py

@@ -533,6 +533,28 @@ def launch_viz(grid_size, vo_points, fps, original_image_state):
                     track_video_content = result.get("track_video_content", None)
                     track_video_filename = result.get("track_video_filename", "tracked_video.mp4")
                     
+                    # ✅ 关键修复：直接返回backend的HTML内容，不需要iframe包装
+                    # Backend返回的viz_html已经是完整的HTML，包含了嵌入的base64数据
+                    print(f"✅ Received HTML content from backend (length: {len(viz_html)})")
+                    
+                    # 🔧 Debug: 检查HTML内容是否包含关键元素
+                    if viz_html:
+                        has_base64 = "window.embeddedBase64" in viz_html
+                        has_canvas = "<canvas" in viz_html
+                        has_script = "<script" in viz_html
+                        print(f"🔧 HTML Analysis:")
+                        print(f"   - Contains base64 data: {has_base64}")
+                        print(f"   - Contains canvas element: {has_canvas}")
+                        print(f"   - Contains script tags: {has_script}")
+                        print(f"   - HTML preview: {viz_html[:200]}...")
+                        
+                        if not has_base64:
+                            print("⚠️ Warning: HTML doesn't contain embedded base64 data!")
+                        if not has_canvas:
+                            print("⚠️ Warning: HTML doesn't contain canvas element!")
+                    else:
+                        print("❌ Warning: Empty HTML content received from backend!")
+                    
                     # If we have base64 encoded video content, save it as a temporary file
                     if track_video_content:
                         try: