From ba617964585a118e30932461f24a6c3627047738 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jaime=20Marqui=CC=81nez=20Ferra=CC=81ndiz?=
 <jaime.marquinez.ferrandiz@gmail.com>
Date: Mon, 9 Feb 2015 15:04:22 +0100
Subject: [PATCH] [youtube] Don't override format info from the dash manifest
 (fixes #4911)

---
 youtube_dl/extractor/youtube.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index e4b26b84f..8b91fff18 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -780,8 +780,9 @@ def decrypt_sig(mobj):
                     fo for fo in formats
                     if fo['format_id'] == format_id)
             except StopIteration:
-                f.update(self._formats.get(format_id, {}).items())
-                formats.append(f)
+                full_info = self._formats.get(format_id, {}).copy()
+                full_info.update(f)
+                formats.append(full_info)
             else:
                 existing_format.update(f)
         return formats