From bb77af934ecd07af267bd6fb49a216b39f4b7328 Mon Sep 17 00:00:00 2001
From: ctf <ctf@rock-chips.com>
Date: Fri, 5 Nov 2021 11:05:38 +0800
Subject: [PATCH] movenc: fixed write stts tag

Signed-off-by: ctf <ctf@rock-chips.com>
---
 libavformat/movenc.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index 2a45302..d4cb02a 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -2291,6 +2291,10 @@ static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)
         }
         for (i = 0; i < track->entry; i++) {
             int duration = get_cluster_duration(track, i);
+
+            if (duration == 0)
+              continue;
+
             if (i && duration == stts_entries[entries].duration) {
                 stts_entries[entries].count++; /* compress */
             } else {
-- 
2.7.4