From e4a60912b8345536387ae14d0d0611eb0b82c23a Mon Sep 17 00:00:00 2001
From: =?utf8?q?Sergey=20M=E2=80=A4?= <dstftw@gmail.com>
Date: Sun, 4 Feb 2018 07:17:26 +0700
Subject: [PATCH] [youtube] Enforce using chunked HTTP downloading for DASH
 formats

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

diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index 43051512b..17543d6f4 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -1944,6 +1944,11 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                                     break
                             if codecs:
                                 dct.update(parse_codecs(codecs))
+                if dct.get('acodec') == 'none' or dct.get('vcodec') == 'none':
+                    dct['downloader_options'] = {
+                        # Youtube throttles chunks >~10M
+                        'http_chunk_size': 10485760,
+                    }
                 formats.append(dct)
         elif video_info.get('hlsvp'):
             manifest_url = video_info['hlsvp'][0]
-- 
2.39.5