Norm

NEN-ISO/IEC 23001-11:2015 en

Information technology - MPEG systems technologies - Part 11: Energy-efficient media consumption (green metadata)

Volledig inclusief:

143,10

Over deze norm

Status Definitief
Aantal pagina's 41
Commissie Coding of audio, picture, multimedia and hypermedia information
Gepubliceerd op 01-07-2015
Taal Engels
This part of ISO/IEC 23001 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.

Details

ICS-code 35.040
Engelse titel Information technology - MPEG systems technologies - Part 11: Energy-efficient media consumption (green metadata)
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