Update app.py

app.py

@@ -202,26 +202,18 @@ def retrieve_video(text, debug=False, similarity_threshold=0.7):
         return None
 
 def merge_videos(video_list, output_path="temp/output.mp4"):
-    
-    os.makedirs("temp", exist_ok=True)
-    
     if not video_list:
         return None
-        
+
     if len(video_list) == 1:
-        os.system(f"cp '{video_list[0]}' '{output_path}'")
-        return output_path
-    
-    for path in video_list:
-        if not os.path.exists(path):
-            print(f"Warning: Video path does not exist: {path}")
-            return None
-    
-    with open("temp/video_list.txt", "w") as f:
-        for path in video_list:
-            f.write(f"file '{path}'\n")
+        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"
     
-    command = f"ffmpeg -f concat -safe 0 -i temp/video_list.txt -c copy {output_path} -y"
     process = subprocess.run(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
     
     if process.returncode != 0:
@@ -231,6 +223,7 @@ 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)