limit long audio files

app.py

@@ -182,6 +182,19 @@ def process(
     date_time = now.strftime("%Y-%m-%d %H:%M:%S.%f")
     MyPrint(f"Started at {date_time}")
 
+    metadata = torchaudio.info(filename)
+    duration = metadata.num_frames / sample_rate
+
+    if duration > 40:
+        info = f"""
+        Input audio is too long.
+        Please switch to
+        https://huggingface.co/spaces/k2-fsa/generate-subtitles-for-videos
+        for long audios.
+        """
+        MyPrint(info)
+        return "audio tooooo loooooong", build_html_output(info)
+
     start = time.time()
 
     recognizer = get_pretrained_model(
@@ -198,8 +211,6 @@ def process(
     date_time = now.strftime("%Y-%m-%d %H:%M:%S.%f")
     end = time.time()
 
-    metadata = torchaudio.info(filename)
-    duration = metadata.num_frames / sample_rate
     rtf = (end - start) / duration
 
     MyPrint(f"Finished at {date_time} s. Elapsed: {end - start: .3f} s")