From 0fb983f62d533f14ef691df788b835ff01a2fde7 Mon Sep 17 00:00:00 2001
From: pukkandan <pukkandan.ytdlp@gmail.com>
Date: Fri, 14 May 2021 12:31:53 +0530
Subject: [PATCH] [youtube] Extract audio language

---
 yt_dlp/extractor/youtube.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/yt_dlp/extractor/youtube.py b/yt_dlp/extractor/youtube.py
index 71eb018e6..ecee2e092 100644
--- a/yt_dlp/extractor/youtube.py
+++ b/yt_dlp/extractor/youtube.py
@@ -1303,6 +1303,10 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             'params': {
                 'skip_download': True,
             },
+        }, {
+            # Has multiple audio streams
+            'url': 'WaOKSUlf4TM',
+            'only_matching': True
         },
     ]
 
@@ -1996,17 +2000,19 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 itags.append(itag)
             tbr = float_or_none(
                 fmt.get('averageBitrate') or fmt.get('bitrate'), 1000)
+            audio_track = fmt.get('audioTrack') or {}
             dct = {
                 'asr': int_or_none(fmt.get('audioSampleRate')),
                 'filesize': int_or_none(fmt.get('contentLength')),
                 'format_id': itag,
-                'format_note': fmt.get('qualityLabel') or quality,
+                'format_note': audio_track.get('displayName') or fmt.get('qualityLabel') or quality,
                 'fps': int_or_none(fmt.get('fps')),
                 'height': int_or_none(fmt.get('height')),
                 'quality': q(quality),
                 'tbr': tbr,
                 'url': fmt_url,
                 'width': fmt.get('width'),
+                'language': audio_track.get('id', '').split('.')[0],
             }
             mimetype = fmt.get('mimeType')
             if mimetype: