From aa6ee772978b24867d0ade9d80837a91912d8415 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Thu, 3 Jul 2014 14:15:36 +0200
Subject: [PATCH] mpegtspacketizer: Don't dereference NULL if we have no PCR
 yet

Can happen sometimes if the duration is requested before we
received enough data with a PCR.
---
 gst/mpegtsdemux/mpegtspacketizer.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gst/mpegtsdemux/mpegtspacketizer.c b/gst/mpegtsdemux/mpegtspacketizer.c
index a02cc4bc12..7889c7e600 100644
--- a/gst/mpegtsdemux/mpegtspacketizer.c
+++ b/gst/mpegtsdemux/mpegtspacketizer.c
@@ -2118,6 +2118,12 @@ mpegts_packetizer_offset_to_ts (MpegTSPacketizer2 * packetizer,
         packetizer->refoffset;
   } else {
     PCROffsetCurrent *current = pcrtable->current;
+
+    if (!current->group) {
+      PACKETIZER_GROUP_UNLOCK (packetizer);
+      GST_LOG ("No PCR yet");
+      return GST_CLOCK_TIME_NONE;
+    }
     /* If doing progressive read, use current */
     GST_LOG ("Using current group");
     lastpcr = current->group->pcr_offset + current->pending[current->last].pcr;