diff --git a/service/video/concat_service.go b/service/video/concat_service.go
index 04b551f..168a051 100644
--- a/service/video/concat_service.go
+++ b/service/video/concat_service.go
@@ -130,7 +130,7 @@ func (s *concatService) Concat(ctx context.Context, req *ConcatReq) (res *Concat
 
 	// 如果需要上传到 MinIO（用独立 context，避免 HTTP 断开后 ctx 被取消）
 	if req.Upload {
-		uploadCtx := context.Background()
+		uploadCtx := context.WithValue(context.Background(), "user", getUserFromCtx(ctx))
 		uploadRes, uploadErr := s.UploadToMinIO(uploadCtx, outputPath)
 		if uploadErr != nil {
 			return nil, fmt.Errorf("上传到MinIO失败: %v", uploadErr)
diff --git a/service/video/cut_service.go b/service/video/cut_service.go
index b1d03af..92a2001 100644
--- a/service/video/cut_service.go
+++ b/service/video/cut_service.go
@@ -192,9 +192,9 @@ func (s *cutService) Cut(ctx context.Context, req *CutReq) (res *CutRes, err err
 		ShotsCount:  len(validShots),
 	}
 
-	// 如果需要上传到 MinIO
+	// 如果需要上传到 MinIO（用独立 context，避免 HTTP 断开后 ctx 被取消，同时保留用户信息）
 	if req.Upload {
-		uploadCtx := context.Background()
+		uploadCtx := context.WithValue(context.Background(), "user", getUserFromCtx(ctx))
 		uploadRes, uploadErr := s.UploadToMinIO(uploadCtx, outputPath)
 		if uploadErr != nil {
 			return nil, fmt.Errorf("上传到MinIO失败: %v", uploadErr)