diff --git a/backend/app/http/posts.go b/backend/app/http/posts.go
index 4d6a0b7..6079609 100644
--- a/backend/app/http/posts.go
+++ b/backend/app/http/posts.go
@@ -194,7 +194,7 @@ 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)
+			url, err := ctl.oss.GetSignedUrl(ctx.Context(), media.Path, ali.WithExpire(time.Second*time.Duration(media.Metas.Data.Duration+30)))
 			if err != nil {
 				log.WithError(err).Errorf("media GetSignedUrl err: %v", err)
 				return nil, err