From 880ccf4e972d3050c8e6109cdf243fd3d0d307f7 Mon Sep 17 00:00:00 2001
From: Bradley Sepos <bradley@bradleysepos.com>
Date: Sat, 9 Sep 2023 21:24:09 -0400
Subject: [PATCH] libhb: Refactor VCN AV1 quality offset taper.

Same result with the default parameters, now correct with others.
---
 libhb/encavcodec.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/libhb/encavcodec.c b/libhb/encavcodec.c
index cb05ee51e4e7..2654a5a25e3f 100644
--- a/libhb/encavcodec.c
+++ b/libhb/encavcodec.c
@@ -846,14 +846,15 @@ int encavcodecInit( hb_work_object_t * w, hb_job_t * job )
             char quality[7];
             char qualityP[7];
             char qualityB[7];
+            double qualityOffsetThreshold = 32;
             double qualityOffsetP = 8;
             double qualityOffsetB;
             double adjustedQualityP;
             double adjustedQualityB;
 
-            if (job->vquality <= 32)
+            if (job->vquality <= qualityOffsetThreshold)
             {
-                qualityOffsetP = job->vquality / qualityOffsetP * 2;
+                qualityOffsetP = job->vquality / qualityOffsetThreshold * qualityOffsetP;
             }
             qualityOffsetB = qualityOffsetP * 2;