From 147a215edd3e98b1ac8b1cee13160ee09b25f4c8 Mon Sep 17 00:00:00 2001
From: Daniel Silhavy <daniel.silhavy@fokus.fraunhofer.de>
Date: Fri, 15 Mar 2024 08:35:26 +0100
Subject: [PATCH] Check for length of content protection element when checking
 if media is supported (#4420)

---
 src/streaming/Stream.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/streaming/Stream.js b/src/streaming/Stream.js
index 61081d9fbe..30202f13c6 100644
--- a/src/streaming/Stream.js
+++ b/src/streaming/Stream.js
@@ -431,7 +431,7 @@ function Stream(config) {
             return true;
         }
 
-        if (!!mediaInfo.contentProtection && !capabilities.supportsEncryptedMedia()) {
+        if (!!mediaInfo.contentProtection && mediaInfo.contentProtection.length > 0 && !capabilities.supportsEncryptedMedia()) {
             errHandler.error(new DashJSError(Errors.CAPABILITY_MEDIAKEYS_ERROR_CODE, Errors.CAPABILITY_MEDIAKEYS_ERROR_MESSAGE));
             return false;
         }