Ticket #39512: 39512.diff

src/wp-includes/theme.php

@@ -1322 +1322 @@
  * @return bool Whether a header video is set or not.
  */
 function has_header_video() {
-        return (bool) get_header_video_url();
+        $has_header_video = (bool) get_header_video_url();
+
+        /**
+         * Modify whether a header video is set or not.
+         *
+         * @since 4.7.2
+         *
+         * @param bool $has_header_video Whether a header video is set or not.
+         */
+        return apply_filters( 'has_header_video', $has_header_video );
 }
 
 /**