--- /dev/null
+<?php
+
+namespace Drupal\metatag_open_graph\Plugin\metatag\Tag;
+
+use \Drupal\metatag\Plugin\metatag\Tag\MetaPropertyBase;
+
+/**
+ * Provides a plugin for the 'og:video:secure_url' meta tag.
+ *
+ * @MetatagTag(
+ * id = "og_video_secure_url",
+ * label = @Translation("Video Secure URL"),
+ * description = @Translation("The secure URL (HTTPS) of an video which should represent the content. The video must be at least 50px by 50px and have a maximum aspect ratio of 3:1. Supports PNG, JPEG and GIF formats. All 'http://' URLs will automatically be converted to 'https://'."),
+ * name = "og:video:secure_url",
+ * group = "open_graph",
+ * weight = 11,
+ * type = "video",
+ * secure = TRUE,
+ * multiple = FALSE
+ * )
+ */
+class OgVideoSecureUrl extends MetaPropertyBase {
+ // Nothing here yet. Just a placeholder class for a plugin.
+}