From ccca7e822e300c1f1446631144183d2c44c05ff3 Mon Sep 17 00:00:00 2001
From: RushLana <renarde-dev@la-taniere-solidaire.fr>
Date: Wed, 21 May 2025 14:47:12 +0200
Subject: [PATCH] Fix webp animation derivatives Using imagick to generate
 derivates on an animated webp break animation Applying "-layers coalesce"
 ensure the animation remain smooth Refs : -
 https://github.com/ImageMagick/ImageMagick/issues/6375 -
 https://github.com/ImageMagick/ImageMagick/issues/5542 -
 https://github.com/ImageMagick/ImageMagick/issues/4246

---
 admin/include/image.class.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/admin/include/image.class.php b/admin/include/image.class.php
index ace71bc3b..2b1119e3f 100644
--- a/admin/include/image.class.php
+++ b/admin/include/image.class.php
@@ -731,6 +731,12 @@ class image_ext_imagick implements imageInterface
     $exec = $this->imagickdir.pwg_image::get_ext_imagick_command();
     $exec .= ' "'.realpath($this->source_filepath).'"';
 
+    // If the image is animated webp add a filter to avoid breaking the animation
+    if ($this->is_animated_webp)
+    {
+      $exec .= ' -layers coalesce ';
+    }
+
     foreach ($this->commands as $command => $params)
     {
       $exec .= ' -'.$command;
@@ -739,7 +745,6 @@ class image_ext_imagick implements imageInterface
         $exec .= ' '.$params;
       }
     }
-
     $dest = pathinfo($destination_filepath);
     $exec .= ' "'.realpath($dest['dirname']).'/'.$dest['basename'].'" 2>&1';
     $logger->debug($exec, 'i.php');