From 7006dabd4c5f48d55459b3d8d9b16068b44fcb0c Mon Sep 17 00:00:00 2001
From: 0x9fff00 <0x9fff00+git@protonmail.ch>
Date: Fri, 22 Feb 2019 20:25:42 +0100
Subject: [PATCH] From @0x9fff00: `-map 0` is needed to copy all streams from
 the source file (untested)

Co-Authored-By: Alex131089 <alex131089@msn.com>
---
 youtube_dl/postprocessor/embedthumbnail.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/youtube_dl/postprocessor/embedthumbnail.py b/youtube_dl/postprocessor/embedthumbnail.py
index 6446116ff..6481a87fe 100644
--- a/youtube_dl/postprocessor/embedthumbnail.py
+++ b/youtube_dl/postprocessor/embedthumbnail.py
@@ -63,6 +63,7 @@ class EmbedThumbnailPP(FFmpegPostProcessor):
 
             options = [
                 '-c', 'copy',
+                '-map', '0',
                 '-attach', thumbnail_filename,
                 # https://matroska.org/technical/cover_art/index.html as pointed in #6046
                 # No orientation detection nor dimensions checking/convertion