From dc037b034cdfb700d090bc143ba4c703c2a55471 Mon Sep 17 00:00:00 2001
From: itachi-19 <16500619+itachi-19@users.noreply.github.com>
Date: Wed, 24 May 2023 10:37:48 +0530
Subject: [PATCH] [extractor/biliIntl] Code review changes

---
 yt_dlp/extractor/bilibili.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/yt_dlp/extractor/bilibili.py b/yt_dlp/extractor/bilibili.py
index 498d8071ac..d8e3ed9d95 100644
--- a/yt_dlp/extractor/bilibili.py
+++ b/yt_dlp/extractor/bilibili.py
@@ -893,15 +893,16 @@ class BiliIntlBaseIE(InfoExtractor):
             })) or {}
         subtitles = {}
 
-        for sub in sub_json.get('video_subtitle') or []:
+        for sub in traverse_obj(sub_json, ('video_subtitle', ..., {dict})):
             srt_sub = sub.get('srt')
             ass_sub = sub.get('ass')
-            sub_formats = subtitles.setdefault(sub.get('lang_key', 'en'), [])
+            lang_key = sub.get('lang_key', 'en')
+            sub_formats = subtitles.setdefault(lang_key, [])
 
             if srt_sub:
                 sub_data = self._download_json(
                     srt_sub.get('url'), ep_id or aid, errnote='Unable to download subtitles', fatal=False,
-                    note='Downloading subtitles%s' % f' for {sub["lang"]} ({sub["lang_key"]})' if sub.get('lang') else '')
+                    note='Downloading subtitles%s' % f' for {sub["lang"]} ({lang_key})' if sub.get('lang') else '')
                 if sub_data:
                     sub_formats.append({
                         'ext': 'srt',