From 3173d8e9b8c66be0a6cb08d7a102297456f4e7a3 Mon Sep 17 00:00:00 2001
From: "Steinar H. Gunderson" <sgunderson@bigfoot.com>
Date: Tue, 19 Apr 2016 21:50:15 +0200
Subject: [PATCH] Scale duration correctly.

---
 mux.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mux.cpp b/mux.cpp
index 534d56a..d0c17fd 100644
--- a/mux.cpp
+++ b/mux.cpp
@@ -94,9 +94,11 @@ void Mux::add_packet(const AVPacket &pkt, int64_t pts, int64_t dts)
 	if (pkt.stream_index == 0) {
 		pkt_copy.pts = av_rescale_q(pts, AVRational{1, TIMEBASE}, avstream_video->time_base);
 		pkt_copy.dts = av_rescale_q(dts, AVRational{1, TIMEBASE}, avstream_video->time_base);
+		pkt_copy.duration = av_rescale_q(pkt.duration, AVRational{1, TIMEBASE}, avstream_video->time_base);
 	} else if (pkt.stream_index == 1) {
 		pkt_copy.pts = av_rescale_q(pts, AVRational{1, TIMEBASE}, avstream_audio->time_base);
 		pkt_copy.dts = av_rescale_q(dts, AVRational{1, TIMEBASE}, avstream_audio->time_base);
+		pkt_copy.duration = av_rescale_q(pkt.duration, AVRational{1, TIMEBASE}, avstream_audio->time_base);
 	} else {
 		assert(false);
 	}
-- 
2.39.2