Update app.py

app.py

@@ -213,6 +213,7 @@ def generate_item(user_input, ideas, generate_video=False, max_retries=3):
             max_video_retries_per_image = 2
             video_generated = False
 
+            # Image-to-video generation
             try:
                 yield (60, f"Filming a viral video for {user_input}... 🎥")
                 video_prompt = f"""
@@ -220,6 +221,7 @@ def generate_item(user_input, ideas, generate_video=False, max_retries=3):
                 Use a close-up shot with a slow dolly shot circling around the subject, 
                 using shallow focus on the main subject to emphasize details, in a realistic style with cinematic lighting.
                 """
+                print(f"Attempting image-to-video generation: {video_prompt}")
                 operation = client.models.generate_videos(
                     model="veo-2.0-generate-001",
                     prompt=video_prompt,
@@ -235,9 +237,10 @@ def generate_item(user_input, ideas, generate_video=False, max_retries=3):
                     time.sleep(20)
                     operation = client.operations.get(operation)
                 
+                print(f"Image-to-video operation: done={operation.done}, error={operation.error}, response={operation.response}")
                 if operation.error:
                     raise ValueError(f"Video generation failed: {operation.error.message}")
-                if operation.response is None or not hasattr(operation.response, 'generated_videos'):
+                if operation.response is None or not hasattr(operation.response, 'generated_videos') or operation.response.generated_videos is None:
                     raise ValueError("Video generation failed: No generated_videos in response")
                 
                 if len(operation.response.generated_videos) > 0:
@@ -261,10 +264,13 @@ def generate_item(user_input, ideas, generate_video=False, max_retries=3):
                         'video_base64': video_base64,
                         'ideas': ideas
                     }
+                else:
+                    raise ValueError("No video was generated")
             except Exception as e:
                 print(f"Error generating video (image-to-video): {e}")
                 yield (70, f"Switching to a new video approach for {user_input}... 🎞️")
 
+            # Text-to-video generation (fallback)
             if not video_generated:
                 for video_attempt in range(max_video_retries_per_image):
                     try:
@@ -278,6 +284,7 @@ def generate_item(user_input, ideas, generate_video=False, max_retries=3):
                         The user concept is "{user_input}". Based on this and a simplified scene: {image_prompt}, create a video.
                         Use a static close-up shot of the subject in a realistic style.
                         """
+                        print(f"Attempting text-to-video generation (attempt {video_attempt + 1}): {video_prompt}")
                         operation = client.models.generate_videos(
                             model="veo-2.0-generate-001",
                             prompt=video_prompt,
@@ -292,9 +299,10 @@ def generate_item(user_input, ideas, generate_video=False, max_retries=3):
                             time.sleep(20)
                             operation = client.operations.get(operation)
                         
+                        print(f"Text-to-video operation (attempt {video_attempt + 1}): done={operation.done}, error={operation.error}, response={operation.response}")
                         if operation.error:
                             raise ValueError(f"Video generation failed: {operation.error.message}")
-                        if operation.response is None or not hasattr(operation.response, 'generated_videos'):
+                        if operation.response is None or not hasattr(operation.response, 'generated_videos') or operation.response.generated_videos is None:
                             raise ValueError("Video generation failed: No generated_videos in response")
                         
                         if len(operation.response.generated_videos) > 0:
@@ -318,6 +326,8 @@ def generate_item(user_input, ideas, generate_video=False, max_retries=3):
                                 'video_base64': video_base64,
                                 'ideas': ideas
                             }
+                        else:
+                            raise ValueError("No video was generated")
                     except Exception as e:
                         print(f"Error generating video (text-to-video attempt {video_attempt + 1}): {e}")
                         if video_attempt == max_video_retries_per_image - 1:
@@ -626,7 +636,7 @@ def generate_share_links(image_base64, video_base64, caption):
                 text-decoration: none;
                 font-size: 14px;
                 font-weight: bold;
- esperienze                    transition: background-color 0.3s;
+                transition: background-color 0.3s;
             " onmouseover="this.style.backgroundColor='#45a049'" onmouseout="this.style.backgroundColor='#4CAF50'">Download Video</a>
         """
     download_links += "</div>"