Update app.py

app.py

@@ -134,7 +134,7 @@ def process_video(video, model_option):
         sample_rate,
         temp_video_path_1)
 
-    if model_option == "sound_and_language":
+    if model_option == "sound-language":
         temp_video_path_2 = tempfile.mktemp(suffix='.mp4')
 
         plot_2head_attention_video(