From baf599effa414fe927211a2b334365758d88c32b Mon Sep 17 00:00:00 2001
From: pukkandan <pukkandan.ytdlp@gmail.com>
Date: Wed, 19 Jan 2022 19:00:32 +0530
Subject: [PATCH] [pbs] de-prioritize AD formats

Related: #2335
---
 yt_dlp/extractor/pbs.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/yt_dlp/extractor/pbs.py b/yt_dlp/extractor/pbs.py
index ffaa6bf92..e48a2b8e0 100644
--- a/yt_dlp/extractor/pbs.py
+++ b/yt_dlp/extractor/pbs.py
@@ -545,7 +545,7 @@ class PBSIE(InfoExtractor):
                 for vid_id in video_id]
             return self.playlist_result(entries, display_id)
 
-        info = None
+        info = {}
         redirects = []
         redirect_urls = set()
 
@@ -660,6 +660,9 @@ class PBSIE(InfoExtractor):
                     'protocol': 'http',
                 })
                 formats.append(f)
+        for f in formats:
+            if (f.get('format_note') or '').endswith(' AD'):  # Audio description
+                f['language_preference'] = -10
         self._sort_formats(formats)
 
         rating_str = info.get('rating')