From a0468d239fbfa659641ce6085aa9b63977a5785d Mon Sep 17 00:00:00 2001
From: Akilan Sivakumar <akilan.sivakumar@multicorewareinc.com>
Date: Tue, 22 Sep 2026 10:57:01 +0530
Subject: [PATCH] Fix deltaX/deltaY offset formula for small rectangular PU
 shapes in SEA search

---
 source/encoder/motion.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/source/encoder/motion.cpp b/source/encoder/motion.cpp
index a1ab3b5e2..40f554909 100644
--- a/source/encoder/motion.cpp
+++ b/source/encoder/motion.cpp
@@ -1498,11 +1498,13 @@ int MotionEstimate::motionEstimate(ReferencePlanes *ref,
 
         /* Successive elimination by comparing DC before a full SAD,
          * because sum(abs(diff)) >= abs(diff(sum)). */
+        int sad4DeltaX = (horizontalRect && w <= 8) ? (w >> 1) : deltaX;
+        int sad4DeltaY = (verticalRect && h <= 8) ? (h >> 1) : deltaY;
         primitives.pu[tempPartEnum].sad_x4(zero,
                          fenc,
-                         fenc + deltaX,
-                         fenc + deltaY * FENC_STRIDE,
-                         fenc + deltaX + deltaY * FENC_STRIDE,
+                         fenc + sad4DeltaX,
+                         fenc + sad4DeltaY * FENC_STRIDE,
+                         fenc + sad4DeltaX + sad4DeltaY * FENC_STRIDE,
                          FENC_STRIDE,
                          encDC);