From 1f83f046090cac09b7a3da7f15182d2143bccf87 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Tue, 13 Dec 2011 03:02:20 +0100
Subject: [PATCH] mp4enc: dont store durations in trun if they are unneeded.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libavformat/movenc.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index de6dafb288d..31fd05d3706 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -1447,8 +1447,12 @@ static int mov_write_trun_tag(AVIOContext *pb, MOVTrack *track)
int tr_flags=0;
int i;
- tr_flags |= 0x700; //FIXME
+ tr_flags |= 0x600; //FIXME
for(i=track->cluster_write_index; i<track->entry; i++){
+ int64_t duration = i + 1 == track->entry ?
+ track->trackDuration - track->cluster[i].dts + track->cluster[0].dts : /* readjusting */
+ track->cluster[i+1].dts - track->cluster[i].dts;
+ if(duration != 1) tr_flags |= 0x100;
if(track->cluster[i].cts) tr_flags |= 0x800;
}
--
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