From a62460aa213c628874a4e6aee9d835433c705b94 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergey=20M=E2=80=A4?= <dstftw@gmail.com>
Date: Mon, 6 Aug 2018 04:37:03 +0700
Subject: [PATCH] [imdb] Fix extension extraction (closes #17167)

---
 youtube_dl/extractor/imdb.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/youtube_dl/extractor/imdb.py b/youtube_dl/extractor/imdb.py
index fba01ef49e..436759da54 100644
--- a/youtube_dl/extractor/imdb.py
+++ b/youtube_dl/extractor/imdb.py
@@ -64,7 +64,8 @@ class ImdbIE(InfoExtractor):
             video_url = url_or_none(encoding.get('videoUrl'))
             if not video_url:
                 continue
-            ext = determine_ext(video_url, mimetype2ext(encoding.get('mimeType')))
+            ext = mimetype2ext(encoding.get(
+                'mimeType')) or determine_ext(video_url)
             if ext == 'm3u8':
                 formats.extend(self._extract_m3u8_formats(
                     video_url, video_id, 'mp4', entry_protocol='m3u8_native',