media-libs/mlt/files/mlt-6.16.0-rotoscoping-interpolation.patch


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From ddf6983b4aaaf662944b84103dd4412aff45a428 Mon Sep 17 00:00:00 2001
From: alcinos <nicolas.carion@ens-lyon.fr>
Date: Fri, 10 May 2019 23:20:22 +0200
Subject: [PATCH] Fix interpolation in rotoscoping filter

---
 src/modules/plusgpl/filter_rotoscoping.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/modules/plusgpl/filter_rotoscoping.c b/src/modules/plusgpl/filter_rotoscoping.c
index 0667929cd..70e3a093b 100644
--- a/src/modules/plusgpl/filter_rotoscoping.c
+++ b/src/modules/plusgpl/filter_rotoscoping.c
@@ -572,7 +572,7 @@ static mlt_frame filter_process( mlt_filter filter, mlt_frame frame )
             int c2 = json2BCurves( keyframe, &p2 );
 
             // range 0-1
-            double position = ( time - pos1 ) / (double)( pos2 - pos1 + 1 );
+            double position = ( time - pos1 ) / (double)( pos2 - pos1 );
 
             count = MIN( c1, c2 );  // additional points are ignored
             points = mlt_pool_alloc( count * sizeof( BPointF ) );