Update app.py

app.py

@@ -32,15 +32,25 @@ def video_id_extractor(link):
     return None
 
 def generate_transcript(video_id):
-    trans = YouTubeTranscriptApi()
+    from youtube_transcript_api import YouTubeTranscriptApi, _errors
+    import traceback
+
+    print(f"[INFO] Fetching transcript for video ID: {video_id}")
     try:
-        transcript_raw = trans.fetch(video_id = video_id)
-    except Exception:
-        return None
-    transcript = ""
-    for i in transcript_raw.snippets:
-        transcript += f" {i.text}"
-    return transcript
+        transcript_raw = YouTubeTranscriptApi.get_transcript(video_id, languages=['en'])
+        transcript = " ".join([i['text'] for i in transcript_raw])
+        print(f"[INFO] Transcript fetched. Length: {len(transcript)} chars")
+        return transcript
+    except _errors.TranscriptsDisabled:
+        print(f"[ERROR] Transcripts are disabled for video {video_id}")
+    except _errors.VideoUnavailable:
+        print(f"[ERROR] Video unavailable or restricted: {video_id}")
+    except _errors.NoTranscriptFound:
+        print(f"[ERROR] No transcript found (no captions in English) for {video_id}")
+    except Exception as e:
+        print(f"[ERROR] Unexpected exception fetching transcript: {e}")
+        traceback.print_exc()
+    return None
 
 def create_and_save_vs(trans):
     try: