From e7892d9f797c0b4b682b375075beaeba97b11f1e Mon Sep 17 00:00:00 2001
From: Martin <901824+martinstark@users.noreply.github.com>
Date: Wed, 8 Mar 2023 15:26:18 +0100
Subject: [PATCH] fix: prevent bad calls to MediaSource.endOfStream

---
 lib/media/media_source_engine.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/media/media_source_engine.js b/lib/media/media_source_engine.js
index 5ed1e5eecfb..7a2acdc0e2f 100644
--- a/lib/media/media_source_engine.js
+++ b/lib/media/media_source_engine.js
@@ -1056,8 +1056,10 @@ shaka.media.MediaSourceEngine = class {
   async endOfStream(reason) {
     await this.enqueueBlockingOperation_(() => {
       // If endOfStream() has already been called on the media source,
-      // don't call it again.
-      if (this.ended()) {
+      // don't call it again. Also do not call if readyState is
+      // 'closed' (not attached to video element) since it is not a
+      // valid operation.
+      if (this.ended() || this.mediaSource_.readyState === 'closed') {
         return;
       }
       // Tizen won't let us pass undefined, but it will let us omit the