From 05ce167c77b2f792adeed10d0d5c51a0f4513d5c Mon Sep 17 00:00:00 2001
From: viown <48097677+viown@users.noreply.github.com>
Date: Sat, 19 Oct 2024 13:25:07 +0300
Subject: [PATCH] Fix undefined subtitle stream index

---
 src/components/playback/playbackmanager.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/components/playback/playbackmanager.js b/src/components/playback/playbackmanager.js
index bddc34930f..d3d74bdfc2 100644
--- a/src/components/playback/playbackmanager.js
+++ b/src/components/playback/playbackmanager.js
@@ -2641,7 +2641,9 @@ export class PlaybackManager {
                     }
 
                     if (mediaSource.DefaultSubtitleStreamIndex == null || mediaSource.DefaultSubtitleStreamIndex < 0) {
-                        mediaSource.DefaultSubtitleStreamIndex = mediaSource.DefaultSecondarySubtitleStreamIndex;
+                        if (mediaSource.DefaultSecondarySubtitleStreamIndex != null) {
+                            mediaSource.DefaultSubtitleStreamIndex = mediaSource.DefaultSecondarySubtitleStreamIndex;
+                        }
                         mediaSource.DefaultSecondarySubtitleStreamIndex = -1;
                     }