Update app2.py

app2.py

@@ -28,7 +28,7 @@ with open('delay_reasons.json', 'w') as f:
 def load_video(video_data, strategy='chat'):
     bridge.set_bridge('torch')
     mp4_stream = video_data
-    num_frames = 48
+    num_frames = 24
     decord_vr = VideoReader(io.BytesIO(mp4_stream), ctx=cpu(0))
     frame_id_list = []
     total_frames = len(decord_vr)