'format': "bestvideo[height<=720][ext=mp4]",

app.py

@@ -667,7 +667,7 @@ def download_youtube_video(youtube_id, output_path=OUTPUT_PATH):
         print(f"[Pytube] Video downloaded successfully: {output_path}/{youtube_id}.mp4")
     except Exception as e:
         ydl_opts = {
-            'format': 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best',  # This ensures the best quality combining video and audio
+            'format': "bestvideo[height<=720][ext=mp4]",
             'outtmpl': os.path.join(output_path, f'{youtube_id}.mp4'),  # Output filename template
         }
         with yt_dlp.YoutubeDL(ydl_opts) as ydl: