YouTube thử nghiệm phát video 4K 60 khung hình/giây
Hiện chỉ có một vài video trên YouTube được đăng tải ở chất lượng siêu cao này, nó cũng đòi hỏi đường truyền Internet tốc độ cao, máy tính cấu hình mạnh để xử lý.
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