From: Kostya Shishkov <kostya.shishkov@gmail.com>
Date: Thu, 5 Mar 2026 17:07:24 +0000 (+0100)
Subject: h264: increase margin in wait_for_mb for the luma interpolation filter
X-Git-Url: https://git.nihav.org/?a=commitdiff_plain;h=497838adabc4acff96f77a0f654da4eceee81176;p=nihav.git

h264: increase margin in wait_for_mb for the luma interpolation filter
---

diff --git a/nihav-itu/src/codecs/h264/mb_recon.rs b/nihav-itu/src/codecs/h264/mb_recon.rs
index 4cafcbb..dc7302d 100644
--- a/nihav-itu/src/codecs/h264/mb_recon.rs
+++ b/nihav-itu/src/codecs/h264/mb_recon.rs
@@ -663,8 +663,8 @@ pub fn recon_mb(frm: &mut NASimpleVideoFrame<u8>, slice_hdr: &SliceHeader, mb_in
 }
 
 pub fn wait_for_mb(disp: &Shareable<ThreadDispatcher>, sstate: &SliceState, xpos: usize, ypos: usize, mv: MV, ref_id: u32) -> DecoderResult<()> {
-    let xpos = xpos as isize + ((mv.x >> 2) as isize) + 4;
-    let ypos = ypos as isize + ((mv.y >> 2) as isize) + 4;
+    let xpos = xpos as isize + ((mv.x >> 2) as isize) + 6;
+    let ypos = ypos as isize + ((mv.y >> 2) as isize) + 6;
     let dst_mb_x = ((xpos.max(0) as usize) / 16).min(sstate.mb_w - 1);
     let dst_mb_y = ((ypos.max(0) as usize) / 16).min(sstate.mb_h - 1);
     let expected_mb = dst_mb_x + dst_mb_y * sstate.mb_w;