Update app.py

app.py

@@ -202,17 +202,50 @@ def retrieve_video(text, debug=False, similarity_threshold=0.7):
         return None
 
 def merge_videos(video_list, output_path="temp/output.mp4"):
+    # Create temp directory
+    os.makedirs("temp", exist_ok=True)
+    
     if not video_list:
         return None
-
+        
     if len(video_list) == 1:
-        return video_list[0]  # No need to merge if only one video
-
-    input_files = ' '.join([f"-i {path}" for path in video_list])
-    filter_complex = "".join([f"[{i}:v:0] [{i}:a:0] " for i in range(len(video_list))])
-    filter_complex += f"concat=n={len(video_list)}:v=1:a=1 [v] [a]"
-
-    command = f"ffmpeg {input_files} -filter_complex \"{filter_complex}\" -map \"[v]\" -map \"[a]\" {output_path} -y"
+        # Use a try-except block to handle potential errors
+        try:
+            import shutil
+            shutil.copy(video_list[0], output_path)
+            return output_path
+        except Exception as e:
+            print(f"Error copying single video: {e}")
+            return None
+    
+    # Create a new list with verified paths
+    verified_paths = []
+    for path in video_list:
+        if os.path.exists(path):
+            verified_paths.append(path)
+        else:
+            print(f"Warning: Video path does not exist: {path}")
+    
+    if not verified_paths:
+        print("No valid video paths found")
+        return None
+    
+    # Create the video list file
+    list_path = "temp/video_list.txt"
+    with open(list_path, "w") as f:
+        for path in verified_paths:
+            # Use absolute paths to avoid any directory confusion
+            abs_path = os.path.abspath(path)
+            f.write(f"file '{abs_path}'\n")
+    
+    # Run ffmpeg with absolute paths
+    abs_output = os.path.abspath(output_path)
+    abs_list = os.path.abspath(list_path)
+    
+    command = f"ffmpeg -f concat -safe 0 -i '{abs_list}' -c copy '{abs_output}' -y"
+    
+    # Print the command for debugging
+    print(f"Running command: {command}")
     
     process = subprocess.run(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
     
@@ -223,7 +256,6 @@ def merge_videos(video_list, output_path="temp/output.mp4"):
     return output_path
 
 
-
 def save_video(video_path, output_path="temp/display_output.mp4"):
     
     os.makedirs("temp", exist_ok=True)