From 3037ab00c7ddbe4bedaff51420e4ea1e8d0ccccb Mon Sep 17 00:00:00 2001
From: Remita Amine <remitamine@gmail.com>
Date: Sun, 21 Feb 2021 10:24:58 +0100
Subject: [PATCH] [youtube] fixup m4a_dash formats(closes #28165)

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

diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index ff32758df..72d9fbbc6 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -1603,6 +1603,8 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                     # Youtube throttles chunks >~10M
                     'http_chunk_size': 10485760,
                 }
+                if dct.get('ext'):
+                    dct['container'] = dct['ext'] + '_dash'
             formats.append(dct)
 
         hls_manifest_url = streaming_data.get('hlsManifestUrl')