From ed0aa22c48a3d90da990e86665e43468782bf66b Mon Sep 17 00:00:00 2001
From: Casey Occhialini <1508707+littlespex@users.noreply.github.com>
Date: Thu, 11 Jan 2024 22:28:58 -0800
Subject: [PATCH] fix: do not append blank codec strings (#6093)

Resolves #6092
---
 lib/util/periods.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/util/periods.js b/lib/util/periods.js
index ee5b4a581b..a96bf3dfb9 100644
--- a/lib/util/periods.js
+++ b/lib/util/periods.js
@@ -724,7 +724,9 @@ shaka.util.PeriodCombiner = class {
         // Add the codec of this stream to the output stream's codecs.
         const codecs = new Set(outputStream.codecs.split(','));
         for (const codec of match.codecs.split(',')) {
-          codecs.add(codec);
+          if (codec) {
+            codecs.add(codec);
+          }
         }
         const PeriodCombiner = shaka.util.PeriodCombiner;
         outputStream.codecs = PeriodCombiner.filterDuplicateCodecs_(