From 2297c0d7d977921dca865e6c9cbc7ee5282ba8ef Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergey=20M=E2=80=A4?= <dstftw@gmail.com>
Date: Sat, 19 Oct 2019 23:56:36 +0700
Subject: [PATCH] [facebook] Bypass download rate limits (closes #21018)

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

diff --git a/youtube_dl/extractor/facebook.py b/youtube_dl/extractor/facebook.py
index a3dcdca3e..a56f85c21 100644
--- a/youtube_dl/extractor/facebook.py
+++ b/youtube_dl/extractor/facebook.py
@@ -405,6 +405,11 @@ class FacebookIE(InfoExtractor):
         if not formats:
             raise ExtractorError('Cannot find video formats')
 
+        # Downloads with browser's User-Agent are rate limited. Working around
+        # with non-browser User-Agent.
+        for f in formats:
+            f.setdefault('http_headers', {})['User-Agent'] = 'facebookexternalhit/1.1'
+
         self._sort_formats(formats)
 
         video_title = self._html_search_regex(