From e370aad67ddb15033f656f6b1120c030c759f30b Mon Sep 17 00:00:00 2001
From: Vadim Kalinsky <vadim@kalinsky.ru>
Date: Tue, 28 Jun 2016 14:09:46 -0400
Subject: [PATCH] avformat/mov: Skip non-key frames if AVDISCARD_NONKEY is set.

Github: Closes #222
---
 libavformat/mov.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libavformat/mov.c b/libavformat/mov.c
index a929f74511..485bb0bc0c 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -5224,6 +5224,12 @@ static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
             sc->current_sample -= should_retry(sc->pb, ret64);
             return AVERROR_INVALIDDATA;
         }
+
+        if( st->discard == AVDISCARD_NONKEY && 0==(sample->flags & AVINDEX_KEYFRAME) ) {
+            av_log(mov->fc, AV_LOG_DEBUG, "Nonkey frame from stream %d discarded due to AVDISCARD_NONKEY\n", sc->ffindex);
+            goto retry;
+        }
+
         ret = av_get_packet(sc->pb, pkt, sample->size);
         if (ret < 0) {
             sc->current_sample -= should_retry(sc->pb, ret);