update youtube

agent.py

@@ -1,7 +1,8 @@
 import os
 from typing import Annotated
 
-from langchain_community.document_loaders import WikipediaLoader, YouTubeLoader
+from langchain_community.document_loaders import WikipediaLoader, YoutubeLoader
+from langchain_community.document_loaders.youtube import TranscriptFormat
 
 # --- Langchain / Langraph ---
 from langchain_community.tools.tavily_search import TavilySearchResults
@@ -60,7 +61,12 @@ def search_wikipedia(query: str) -> dict:
 def extract_youtube_transcript(video_url: str) -> dict:
     """Extract transcript from a YouTube video given its URL using LangChain's YouTubeLoader."""
     try:
-        loader = YouTubeLoader(video_urls=[video_url])
+        loader = YoutubeLoader.from_youtube_url(
+            video_url,
+            add_video_info=True,
+            transcript_format=TranscriptFormat.CHUNKS,
+            chunk_size_seconds=30,
+        )
         docs = loader.load()
         if docs:
             formatted_docs = "\n\n---\n\n".join(

requirements.txt

@@ -10,4 +10,4 @@ langchain-tavily
 langgraph
 tavily-python
 wikipedia
-youtube-transcript-api
+youtube-transcript-api==0.6.3