diff --git a/backend/app/http/posts.go b/backend/app/http/posts.go
index 6079609..889e8d2 100644
--- a/backend/app/http/posts.go
+++ b/backend/app/http/posts.go
@@ -194,7 +194,11 @@ func (ctl *posts) Play(ctx fiber.Ctx, id int64, user *model.Users) (*PlayUrl, er
 				log.WithError(err).Errorf("medias GetByID err: %v", err)
 				return nil, err
 			}
-			url, err := ctl.oss.GetSignedUrl(ctx.Context(), media.Path, ali.WithExpire(time.Second*time.Duration(media.Metas.Data.Duration+30)))
+			duration := asset.Metas.Duration + 30
+			if asset.Metas.Duration == 0 {
+				duration = 60 * 5
+			}
+			url, err := ctl.oss.GetSignedUrl(ctx.Context(), media.Path, ali.WithExpire(time.Second*time.Duration(duration)))
 			if err != nil {
 				log.WithError(err).Errorf("media GetSignedUrl err: %v", err)
 				return nil, err