本标准规定了以高达50 Mb/s的比特率运行的MPEG-2视频基本流的压缩约束和比特流特性。预期应用之一是提供与D-10型格式数字记录器兼容的比特流。本标准定义和约束的视频压缩格式完全符合MPEG-2视频标准（ISO/IEC 13818-2[4:2:2P@ML]）。

This standard specifies the compression constraints and bit-stream characteristics of an MPEG-2 video elementary stream operating at bit rates up to 50 Mb/s. One of the intended applications is to provide a bit stream compatible with the type D-10 format digital recorder. The video compression format defined and constrained by this standard is fully compliant with the MPEG-2 video standard (ISO/IEC 13818-2 [4:2:2P @ ML]).