[npo] Clarify token decryption algorithm source

9 years ago · f5ca97e393
1 changed files with 1 additions and 0 deletions
--- a/youtube_dl/extractor/npo.py
+++ b/youtube_dl/extractor/npo.py
@ -18,6 +18,7 @@ class NPOBaseIE(InfoExtractor):
            video_id, note='Downloading token')
        token = self._search_regex(
            r'npoplayer\.token = "(.+?)"', token_page, 'token')
+        # Decryption algorithm extracted from http://npoplayer.omroep.nl/csjs/npoplayer-min.js
        token_l = list(token)
        first = second = None
        for i in range(5, len(token_l) - 4):