ISO/IEC 23001-11:2019 信息技术 MPEG系统技术 第11部分：节能的媒体消费（绿元数据）
标准编号：ISO/IEC 23001-11:2019
中文名称：信息技术 MPEG系统技术 第11部分：节能的媒体消费（绿元数据）
英文名称：Information technology — MPEG systems technologies — Part 11: Energy-efficient media consumption (green metadata)
发布日期：2019-03
标准范围
ISO/IEC 23001-11:20 19本文件规定了用于媒体的节能解码、编码、呈现和选择的元数据。用于节能解码的元数据指定两组信息:复杂性度量(CM)元数据和解码操作减少请求(DOR-Req)元数据。解码器使用CM元数据来改变操作频率，从而降低解码器功耗。在点对点视频会议应用中，远程编码器使用DOR-Req元数据来修改比特流的解码复杂度，从而降低本地解码器功耗。用于节能编码的元数据指定由解码器用于减少来自低功率编码的质量损失的质量度量。节能演示的元数据指定RGB-组件统计和质量级别。呈现子系统使用该元数据通过基于统计调整显示参数来降低功率，以提供来自元数据中提供的那些的期望质量水平。用于节能媒体选择的元数据指定解码器操作减少比率(DOR比率)、RGB分量统计和质量水平。自适应流式传输会话中的客户端使用该元数据来确定可用视频表示的解码器和显示器省电特性，并为给定省电选择具有最佳质量的表示。
ISO/IEC 23001-11:2019 This document specifies metadata for energy-efficient decoding, encoding, presentation and selection of media.
The metadata for energy-efficient decoding specifies two sets of information: complexity metrics (CM) metadata and decoding operation reduction request (DOR-Req) metadata. A decoder uses CM metadata to vary operating frequency and thus reduce decoder power consumption. In a point-to-point video conferencing application, the remote encoder uses the DOR-Req metadata to modify the decoding complexity of the bitstream and thus reduce local decoder power consumption.
The metadata for energy-efficient encoding specifies a quality metric that is used by a decoder to reduce the quality loss from low-power encoding.
The metadata for energy-efficient presentation specifies RGB-component statistics and quality levels. A presentation subsystem uses this metadata to reduce power by adjusting display parameters, based on the statistics, to provide a desired quality level from those provided in the metadata.
The metadata for energy-efficient media selection specifies decoder operation reduction ratios (DOR-Ratios), RGB-component statistics and quality levels. The client in an adaptive streaming session uses this metadata to determine decoder and display power-saving characteristics of available video representations and to select the representation with the optimal quality for a given power-saving.
标准预览图
