update test

app.py

@@ -66,13 +66,29 @@ def _return_yt_html_embed(yt_url):
 
 
 def yt_transcribe(yt_url, return_timestamps=False):
-    yt = pt.YouTube(yt_url)
+    try:
+        yt = pt.YouTube(yt_url)
+    except Exception as e:
+        return f"Error fetching YouTube video: {str(e)}"
+
     html_embed_str = _return_yt_html_embed(yt_url)
-    stream = yt.streams.filter(only_audio=True)[0]
-    stream.download(filename="audio.mp3")
+    
+    audio_streams = yt.streams.filter(only_audio=True)
+    if not audio_streams:
+        return "No audio streams available for this video."
+    
+    stream = audio_streams[0]
+
+    try:
+        stream.download(filename="audio.mp3")
+    except Exception as e:
+        return f"Error downloading audio: {str(e)}"
+    
+    if not os.path.exists("audio.mp3"):
+        return "Downloaded audio file not found."
 
     text = transcribe("audio.mp3", return_timestamps=return_timestamps)
-
+    
     return html_embed_str, text