From 3c4d3ee491b0ec22ed3cade51d943d3d27141ba7 Mon Sep 17 00:00:00 2001
From: kclauhk <78251477+kclauhk@users.noreply.github.com>
Date: Mon, 29 Jan 2024 02:41:56 +0800
Subject: [PATCH] [ie/facebook] Improve thumbnail extraction (#9060)

Authored by: kclauhk
---
 yt_dlp/extractor/facebook.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/yt_dlp/extractor/facebook.py b/yt_dlp/extractor/facebook.py
index 84856abe1..2fbdf1c37 100644
--- a/yt_dlp/extractor/facebook.py
+++ b/yt_dlp/extractor/facebook.py
@@ -682,6 +682,9 @@ class FacebookIE(InfoExtractor):
                 # honor precise duration in video info
                 if video_info.get('duration'):
                     webpage_info['duration'] = video_info['duration']
+                # preserve preferred_thumbnail in video info
+                if video_info.get('thumbnail'):
+                    webpage_info['thumbnail'] = video_info['thumbnail']
                 return merge_dicts(webpage_info, video_info)
 
         if not video_data: