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BS ISO/IEC 23001-11:2015+A1:2016
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Information technology. MPEG systems technologies-Energy-efficient media consumption (green metadata)
信息技术 MPEG系统技术
BS ISO/IEC 23001-11:2015+A1:2016规定了用于节能解码、编码、表示的元数据,
以及媒体的选择。用于节能解码的元数据指定了两组信息:复杂性度量
(CM)元数据和解码操作缩减请求(DOR Req)元数据。解码器使用CM
元数据可以改变工作频率,从而降低解码器功耗。以点对点的方式
在视频会议应用程序中,远程编码器使用DOR Req元数据修改解码
位流的复杂性,从而降低本地解码器的功耗。用于节能编码的元数据指定了解码器用于降低能耗的质量指标
低成本造成的质量损失-
能量编码。节能演示的元数据指定RGB组件统计信息和质量级别。A.
表示子系统使用此元数据,通过根据需要调整显示参数来降低功耗
统计数据,以提供元数据中提供的所需质量级别。用于节能媒体选择的元数据指定解码器操作减少率
(DOR比率)、RGB成分统计和质量水平。自适应流式会话中的客户端
使用此元数据确定解码器并显示可用视频的节电特性
并为给定的节能模式选择具有最佳质量的模式。交叉引用:
ISO/IEC 13818-1:2013ISO/IEC 14496-10ISO/IEC 14496-12ISO/IEC 23001-10ISO/IEC 23008-2ISO/IEC 23009-1ISO/IEC 23009-1:2015/Amd 2:2015ISO/IEC/TR 23009-3:2015包含以下内容:修订,2016年8月。修订并替换BS ISO/IEC 23001-11:2015
BS ISO/IEC 23001-11:2015+A1:2016 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.Cross References:ISO/IEC 13818-1:2013ISO/IEC 14496-10ISO/IEC 14496-12ISO/IEC 23001-10ISO/IEC 23008-2ISO/IEC 23009-1ISO/IEC 23009-1:2015/Amd 2:2015ISO/IEC/TR 23009-3:2015Incorporates the following:Amendment, August 2016. Amends and replaces BS ISO/IEC 23001-11:2015