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BS EN ISO/IEC 11172-4:1995 Information technology. Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s - Part 4. Compliance testing

Description Printed version of this is available at library. To request, please e-mail to referencepk@usm.my and include a copy of this record in your e-mail. Abstract This part of ISO/IEC 11172 specifies how tests can be designed to verify whether bitstreams and decoders meet requirements specified in parts 1,2 and 3 of ISO/IEC 11172. In this part of ISO/IEC 11172, encoders are not addressed specifically. An encoder is entitled to be an ISO/IEC 11172 encoder if it generates bitstreams compliant with the syntactic and semantic bitstream requirements specified in parts 1,2 and 3 of ISO/IEC 11172. Characteristics of coded bitstreams and decoders are defined for parts 1,2 and 3 of ISO/IEC 11172. The characteristics of a bitstream define the subset of the standard that is exploited in the bitstream. Examples are the applied values or range of the picture size and bitrate parameters. Decoder characteristics define the properties and capabilities of the applied decoding process. An example of a property is the applied arithmetic accuracy. The capabilities of a decoder specify which coded bitstreams the decoder can decode and reconstruct, by defining the subset of the standard that may be exploited in decodable bitstreams. A bitstream can be decoded by a decoder if the characteristics of the coded bitstream are within the subset of the standard specified by the decoder capabilities. Procedures are descibed for testing compliance of bitstreams and decoders to the requirements defined in parts 1, 2 and 3 of ISO/IEC 11172. Given the set of characteristics claimed, the requirements that must be met are fully determined by parts 1,2 and 3 of ISO/IEC 11172. This part of ISO/IEC 11172 summarizes the requirements, cross references them to characteristics, and defines how compliance with them can be tested. Guidelines are given how to construct tests and determine their outcome. Some actual tests are defined only for audio.

Contributor(s): MAR - Data Entry Person Primary Item Type: British Standard Identifiers: ICS 35.040.40 Coding of audio, video, multimedia and hypermedia information ISBN 0580243699 Language: English Subject Keywords: Data media; Recording systems; Definitions; Conformity; Computer storage devices; Digital signals; Signal processing; Symbols; Motion-picture film; Digital recording methods; Magnetic storage; Data compression; Decoding; Coded representation; Video signals; Films (cinema); Sound recording; Code conversion; Approval testing; Data conversion; Video recording; Computer applications; Coding (data conversion) First presented to the public: 8/4/2023 Original Publication Date: 7/15/1995 Previously Published By: British Standards Institution Place Of Publication: London, United Kingdom Citation: Extents: Number of Pages - 42 License Grantor / Date Granted:   / ( View License ) Date Deposited 2023-08-04 12:26:24.188 Submitter: Muhamad Azmil Ramli

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