diff --git a/go-backend/internal/repository/post_repository.go b/go-backend/internal/repository/post_repository.go
index 97b1ee0..6d7078b 100644
--- a/go-backend/internal/repository/post_repository.go
+++ b/go-backend/internal/repository/post_repository.go
@@ -83,7 +83,7 @@ func (r *PostRepository) CreatePost(ctx context.Context, post *models.Post) erro
 func (r *PostRepository) GetRandomSponsoredPost(ctx context.Context, userID string) (*models.Post, error) {
 	query := `
 		SELECT 
-			p.id, p.author_id, p.category_id, p.body, COALESCE(p.image_url, ''), COALESCE(p.video_url, ''), COALESCE(p.thumbnail_url, ''), p.duration_ms, COALESCE(p.tags, ARRAY[]::text[]), p.created_at,
+			p.id, p.author_id, p.category_id, p.body, COALESCE(p.image_url, ''), COALESCE(p.video_url, ''), COALESCE(p.thumbnail_url, ''), COALESCE(p.duration_ms, 0), COALESCE(p.tags, ARRAY[]::text[]), p.created_at,
 			pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url,
 			COALESCE(m.like_count, 0) as like_count, COALESCE(m.comment_count, 0) as comment_count,
 			FALSE as is_liked,
@@ -295,7 +295,7 @@ func (r *PostRepository) GetPostByID(ctx context.Context, postID string, userID
 				ELSE ''
 			END AS resolved_video_url,
 			COALESCE(NULLIF(p.thumbnail_url, ''), p.image_url, '') AS resolved_thumbnail_url,
-			p.duration_ms,
+			COALESCE(p.duration_ms, 0),
 			COALESCE(p.tags, ARRAY[]::text[]),
 			p.created_at,
 			p.chain_parent_id,
@@ -972,7 +972,7 @@ func (r *PostRepository) GetPostFocusContext(ctx context.Context, postID string,
 				ELSE ''
 			END AS resolved_video_url,
 			COALESCE(NULLIF(p.thumbnail_url, ''), p.image_url, '') AS resolved_thumbnail_url,
-			p.duration_ms,
+			COALESCE(p.duration_ms, 0),
 			COALESCE(p.tags, ARRAY[]::text[]),
 			p.created_at,
 			pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url,
@@ -1290,7 +1290,7 @@ func (r *PostRepository) GetPopularPublicPosts(ctx context.Context, viewerID str
 				ELSE ''
 			END AS resolved_video_url,
 			COALESCE(NULLIF(p.thumbnail_url, ''), p.image_url, '') AS resolved_thumbnail_url,
-			p.duration_ms,
+			COALESCE(p.duration_ms, 0),
 			COALESCE(p.tags, ARRAY[]::text[]),
 			p.created_at,
 			pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url,