From 2fee3c939af105c5a75696702f58ef267da7bf49 Mon Sep 17 00:00:00 2001
From: Tim Angus <tim@ngus.net>
Date: Sat, 2 Nov 2013 19:11:14 +0000
Subject: Fix video recording sync drift (patch refactored but original author
 unknown)

---
 src/client/snd_dma.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'src/client/snd_dma.c')

diff --git a/src/client/snd_dma.c b/src/client/snd_dma.c
index 369c9388..081319ca 100644
--- a/src/client/snd_dma.c
+++ b/src/client/snd_dma.c
@@ -1258,7 +1258,13 @@ void S_GetSoundtime(void)
 
 	if( CL_VideoRecording( ) )
 	{
-		s_soundtime += (int)ceil( dma.speed / cl_aviFrameRate->value );
+		float fps = MIN(cl_aviFrameRate->value, 1000.0f);
+		float frameDuration = MAX(dma.speed / fps, 1.0f) + clc.aviSoundFrameRemainder;
+
+		int msec = (int)frameDuration;
+		s_soundtime += msec;
+		clc.aviSoundFrameRemainder = frameDuration - msec;
+
 		return;
 	}
 
-- 
cgit