From 22de0f8369f1f3edf1a55e1d275f3c07c617b53e Mon Sep 17 00:00:00 2001
From: Luca Barbato <lu_zero@gentoo.org>
Date: Mon, 19 Aug 2013 17:18:22 +0200
Subject: [PATCH] mov: Compute max duration among the tracks with a timescale

Prevent an assert.
---
 libavformat/movenc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index b41261c9a3..0f21ae2747 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -1640,7 +1640,7 @@ static int mov_write_mvhd_tag(AVIOContext *pb, MOVMuxContext *mov)
     int version;
 
     for (i = 0; i < mov->nb_streams; i++) {
-        if (mov->tracks[i].entry > 0) {
+        if (mov->tracks[i].entry > 0 && mov->tracks[i].timescale) {
             max_track_len_temp = av_rescale_rnd(mov->tracks[i].track_duration,
                                                 MOV_TIMESCALE,
                                                 mov->tracks[i].timescale,