[FFmpeg-devel] [PATCH] libavformat/movenc : Change MOV_TIMESCALE from 1000 to 600

[Mark Burton]

From 9c3cb06bb869e33daaf0c0dacfb4fa66d18a5722 Mon Sep 17 00:00:00 2001
From: mwjburton <mwjburton at gmail.com>
Date: Thu, 8 Mar 2018 22:58:31 +0000
Subject: [PATCH] libavformat/movenc : Change MOV_TIMESCALE from 1000 to 600

Changing the MOV_TIMESCALE value from 1000 to 600 results in
files that seek accurately in professional Quicktime software. This is
due to the fact 600 is cleanly divisible by more frame rates than 1000, for
example 24fps and 30fps. The Quicktime specification default is set to 600
for this reason. When set to 1000 seeking can be inaccurate for these fame
rates.

---
 libavformat/movenc.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/movenc.h b/libavformat/movenc.h
index ca2a9c9722..b7fc2c029d 100644
--- a/libavformat/movenc.h
+++ b/libavformat/movenc.h
@@ -29,7 +29,7 @@
 
 #define MOV_FRAG_INFO_ALLOC_INCREMENT 64
 #define MOV_INDEX_CLUSTER_SIZE 1024
-#define MOV_TIMESCALE 1000
+#define MOV_TIMESCALE 600
 
 #define RTP_MAX_PACKET_SIZE 1450
 
-- 
2.16.2