Index: src/routes/activitypub.js
===================================================================
--- src/routes/activitypub.js	(revision 1d6f9a2206f4836d6c91855b6c7c7494cd58c8f4)
+++ src/routes/activitypub.js	(revision 857a06fb0ed96db4010411e662b03b4f6fcb6bb0)
@@ -76,5 +76,5 @@
   if (!site) return res.status(404).end();
   const posts = db.prepare(
-    `SELECT id, slug, title, content, cover_image_url, nsfw, content_warning, published_at, created_at
+    `SELECT id, slug, title, content, cover_image_url, cover_video_url, nsfw, content_warning, published_at, created_at
      FROM posts WHERE site_id = ? AND status = 'published' AND (fan_only IS NULL OR fan_only = 0)
      ORDER BY COALESCE(published_at, created_at) DESC LIMIT 20`
@@ -108,5 +108,5 @@
   // rank 1 last) → Mastodon flips it back to pin-rank ascending on the profile.
   const posts = db.prepare(
-    `SELECT id, slug, title, content, cover_image_url, nsfw, content_warning, published_at, created_at
+    `SELECT id, slug, title, content, cover_image_url, cover_video_url, nsfw, content_warning, published_at, created_at
      FROM posts WHERE site_id = ? AND status = 'published' AND (fan_only IS NULL OR fan_only = 0)
        AND pinned IS NOT NULL AND pinned > 0
Index: src/routes/posts.js
===================================================================
--- src/routes/posts.js	(revision 1d6f9a2206f4836d6c91855b6c7c7494cd58c8f4)
+++ src/routes/posts.js	(revision 857a06fb0ed96db4010411e662b03b4f6fcb6bb0)
@@ -286,5 +286,5 @@
       ActivityPubService.deliverCreate(site, {
         id: postId, slug: finalSlug, title: title || finalSlug,
-        content: cleanContent, cover_image_url: cover_image_url || null,
+        content: cleanContent, cover_image_url: cover_image_url || null, cover_video_url: req.body.cover_video_url || null,
         published_at: publishedAt, created_at: now, fan_only: fanOnly, nsfw, content_warning: cw,
       }).catch(() => { /* best-effort */ });
@@ -417,5 +417,5 @@
     const apPost = {
       id: post.id, slug: finalSlug, title: title || finalSlug,
-      content: cleanContent, cover_image_url: cover_image_url || null,
+      content: cleanContent, cover_image_url: cover_image_url || null, cover_video_url: req.body.cover_video_url || null,
       published_at: publishedAt, created_at: post.created_at, fan_only: fanOnly, nsfw, content_warning: cw,
     };