From 00de61a98feeb2cb03bbc3e467f2366314b61342 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergey=20M=E2=80=A4?= <dstftw@gmail.com>
Date: Sat, 1 Feb 2020 00:32:25 +0700
Subject: [PATCH] [twitch:stream] Lowercase channel id for stream request
 (closes #23917)

---
 youtube_dl/extractor/twitch.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/youtube_dl/extractor/twitch.py b/youtube_dl/extractor/twitch.py
index a8c2502af..0db2dca41 100644
--- a/youtube_dl/extractor/twitch.py
+++ b/youtube_dl/extractor/twitch.py
@@ -575,8 +575,8 @@ class TwitchStreamIE(TwitchBaseIE):
         channel_id = self._match_id(url)
 
         stream = self._call_api(
-            'kraken/streams/%s?stream_type=all' % channel_id, channel_id,
-            'Downloading stream JSON').get('stream')
+            'kraken/streams/%s?stream_type=all' % channel_id.lower(),
+            channel_id, 'Downloading stream JSON').get('stream')
 
         if not stream:
             raise ExtractorError('%s is offline' % channel_id, expected=True)