From cb81a57dddf6024318af16dfbde4a7e63cf7546a Mon Sep 17 00:00:00 2001
From: Roy Nieterau <roy_nieterau@hotmail.com>
Date: Thu, 30 Oct 2025 22:31:49 +0100
Subject: [PATCH] Allow visualizing Alpha only layers for review as a color
 matte

---
 client/ayon_core/lib/transcoding.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/client/ayon_core/lib/transcoding.py b/client/ayon_core/lib/transcoding.py
index 1762881846..38033d084f 100644
--- a/client/ayon_core/lib/transcoding.py
+++ b/client/ayon_core/lib/transcoding.py
@@ -487,6 +487,11 @@ def get_review_info_by_layer_name(channel_names):
         elif "Z" in channel_info:
             rgb = "Z", "Z", "Z"
 
+        # Has only A channel (Alpha layer)
+        elif "A" in channel_info:
+            rgb = "A", "A", "A"
+            alpha = None
+
         else:
             # No reviewable channels found
             continue