From f90651b3c85890842dbe116745a786249c363063 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jernej=20Fija=C4=8Dko?= <jernej@jernej.org>
Date: Tue, 26 May 2015 14:40:32 +0200
Subject: [PATCH] Check if extradata exists before pushing it into tags

---
 src/h264-stream.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/h264-stream.js b/src/h264-stream.js
index c09dbd57c..e122f1a92 100644
--- a/src/h264-stream.js
+++ b/src/h264-stream.js
@@ -80,7 +80,7 @@
 
       // Check if keyframe and the length of tags.
       // This makes sure we write metadata on the first frame of a segment.
-      if (this._h264Frame.keyFrame || this.tags.length === 0) {
+      if (this._oldExtraData.extraDataExists() && (this._h264Frame.keyFrame || this.tags.length === 0)) {
         // Push extra data on every IDR frame in case we did a stream change + seek
         this.tags.push(this._oldExtraData.metaDataTag(this._h264Frame.pts));
         this.tags.push(this._oldExtraData.extraDataTag(this._h264Frame.pts));