Handle video urls with timestamps / other query parameters in them

Maybe this will fix the issue reported in #1

app.py

@@ -17,6 +17,8 @@ def get_transcript(link):
   print("******** Inside get_transcript ********")
   print(f"link to be extracted is : {link}")
   video_id = link.split("=")[1]
+  # Handle additional query parameters such as timestamp, ...
+  video_id = video_id.split("&")[0]
   print(f"video id extracted is : {video_id}")
   transcript = YouTubeTranscriptApi.get_transcript(video_id)
   FinalTranscript = ' '.join([i['text'] for i in transcript])