From 829aebf95d44c1e850fd31692a273e6c6ab8161a Mon Sep 17 00:00:00 2001
From: Sasi Inguva <isasi-at-google.com@ffmpeg.org>
Date: Wed, 21 Mar 2018 13:36:38 -0700
Subject: lavf/utils.c: Don't compute start_time from DISCARD packets for
 video.

Signed-off-by: Sasi Inguva <isasi@isasi.mtv.corp.google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavformat/utils.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'libavformat')

diff --git a/libavformat/utils.c b/libavformat/utils.c
index 4d0b56c..f13c820 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -1158,7 +1158,9 @@ static void update_initial_timestamps(AVFormatContext *s, int stream_index,
     }
 
     if (st->start_time == AV_NOPTS_VALUE) {
-        st->start_time = pts;
+        if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || !(pkt->flags & AV_PKT_FLAG_DISCARD)) {
+            st->start_time = pts;
+        }
         if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
             st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
     }
-- 
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