From 4cef4da9ef8bb9df5794d0106600af2301ffa735 Mon Sep 17 00:00:00 2001
From: Jonathan Thomas <jonathan@openshot.org>
Date: Fri, 26 Sep 2025 18:35:29 -0500
Subject: [PATCH] Fixing a bug in Keyframe that caused the GetDelta() function
 to return 0.0 early - which was breaking reversed time curves (zero'ing out
 the first frame or two)

---
 src/KeyFrame.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/KeyFrame.cpp b/src/KeyFrame.cpp
index 1df3f3c0..8c761581 100644
--- a/src/KeyFrame.cpp
+++ b/src/KeyFrame.cpp
@@ -399,7 +399,7 @@ void Keyframe::SetJsonValue(const Json::Value root) {
 double Keyframe::GetDelta(int64_t index) const {
 	if (index < 1) return 0.0;
 	if (index == 1 && !Points.empty()) return Points[0].co.Y;
-	if (index >= GetLength()) return 0.0;
+	if (index > GetLength()) return 1.0;
 	return GetValue(index) - GetValue(index - 1);
 }