From f4b742727975c2b1660a196409c3f2818a309a2d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergey=20M=E2=80=A4?= <dstftw@gmail.com>
Date: Sun, 25 Feb 2018 00:59:29 +0700
Subject: [PATCH] [extractor/common] Improve jwplayer subtitles extraction
 (closes #15695)

---
 youtube_dl/extractor/common.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py
index ff62b5cf3..fcdd0fd14 100644
--- a/youtube_dl/extractor/common.py
+++ b/youtube_dl/extractor/common.py
@@ -2353,7 +2353,10 @@ def _parse_jwplayer_data(self, jwplayer_data, video_id=None, require_title=True,
                 for track in tracks:
                     if not isinstance(track, dict):
                         continue
-                    if track.get('kind') != 'captions':
+                    track_kind = track.get('kind')
+                    if not track_kind or not isinstance(track_kind, compat_str):
+                        continue
+                    if track_kind.lower() not in ('captions', 'subtitles'):
                         continue
                     track_url = urljoin(base_url, track.get('file'))
                     if not track_url: