Add new field "extractor" to the info dictionary

youtube_dl/FileDownloader.py

@@ -474,8 +474,8 @@ class FileDownloader(object):
 				# Extract information from URL and process it
 				videos = ie.extract(url)
 				for video in videos or []:
+					video['extractor'] = ie.IE_NAME
 					try:
-						video['provider'] = ie.IE_NAME
 						self.increment_downloads()
 						self.process_info(video)
 					except UnavailableVideoError: