From 3e1cf49676fb2df6445000c30dc6377b808b96da Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Sat, 4 Aug 2012 15:39:22 +0200
Subject: [PATCH] compute_pkt_fields: do not attempt to calculate dts when the
 delay hasnt been estimated.

Fixes ticket1242

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
 libavformat/utils.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/utils.c b/libavformat/utils.c
index 7bd815c3d0..af2575aa51 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -1140,7 +1140,7 @@ static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
         }
     }
 
-    if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
+    if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
         st->pts_buffer[0]= pkt->pts;
         for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
             FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);