From: Sergey M․ <dstftw@gmail.com>
Date: Fri, 10 May 2019 01:36:10 +0000 (+0700)
Subject: [youtube] Use sp field value for signature field name (closes #18841, closes #18927... 
X-Git-Url: http://git.bitcoin.ninja/index.cgi?p=youtube-dl;a=commitdiff_plain;h=027ffdca0d3174963a4269ce8de8519cfed7a12c

[youtube] Use sp field value for signature field name (closes #18841, closes #18927, closes #21028)
---

diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index da202b9bc..8619f3838 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -1987,7 +1987,8 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
 
                     signature = self._decrypt_signature(
                         encrypted_sig, video_id, player_url, age_gate)
-                    url += '&signature=' + signature
+                    sp = try_get(url_data, lambda x: x['sp'][0], compat_str) or 'signature'
+                    url += '&%s=%s' % (sp, signature)
                 if 'ratebypass' not in url:
                     url += '&ratebypass=yes'