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Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Multiple_description_coding> ?p ?o }

• Multiple_description_coding abstract "Multiple description coding (MDC) is a coding technique that fragments a single media stream into n substreams (n ≥ 2) referred to as descriptions. The packets of each description are routed over multiple, (partially) disjoint paths. In order to decode the media stream, any description can be used, however, the quality improves with the number of descriptions received in parallel. The idea of MDC is to provide error resilience to media streams. Since an arbitrary subset of descriptions can be used to decode the original stream, network congestion or packet loss — which are common in best-effort networks such as the Internet — will not interrupt the stream but only cause a (temporary) loss of quality. The quality of a stream can be expected to be roughly proportional to data rate sustained by the receiver.MDC is a form of data partitioning, thus comparable to layered coding as it is used in MPEG-2 and MPEG-4. Yet, in contrast to MDC, layered coding mechanisms generate a base layer and n enhancement layers. The base layer is necessary for the media stream to be decoded, enhancement layers are applied to improve stream quality. However, the first enhancement layer depends on the base layer and each enhancement layer n + 1 depends on its subordinate layer n, thus can only be applied if n was already applied. Hence, media streams using the layered approach are interrupted whenever the base layer is missing and, as a consequence, the data of the respective enhancement layers is rendered useless. The same applies for missing enhancement layers. In general, this implies that in lossy networks the quality of a media stream is not proportional to the amount of correctly received data.Besides increased fault tolerance, MDC allows for rate-adaptive streaming: Content providers send all descriptions of a stream without paying attention to the download limitations of clients. Receivers that cannot sustain the data rate only subscribe to a subset of these streams, thus freeing the content provider from sending additional streams at lower data rates.The vast majority of state-of-the art codecs uses single description (SD) video coding. This approach does not partition any data at all. Despite the aforementioned advantages of MDC, SD codecs are still predominant. The reasons are probably the comparingly high complexity of codec development, the loss of some compression efficiency as well as the caused transmission overhead.Though MDC has its practical roots in media communication, it is widely researched in the area of Information Theory.".
• Multiple_description_coding wikiPageID "5411727".
• Multiple_description_coding wikiPageLength "3685".
• Multiple_description_coding wikiPageOutDegree "10".
• Multiple_description_coding wikiPageRevisionID "644227786".
• Multiple_description_coding wikiPageWikiLink Best-effort_delivery.
• Multiple_description_coding wikiPageWikiLink Best-effort_network.
• Multiple_description_coding wikiPageWikiLink Category:Coding_theory.
• Multiple_description_coding wikiPageWikiLink Channel_coding.
• Multiple_description_coding wikiPageWikiLink Codec.
• Multiple_description_coding wikiPageWikiLink Forward_error_correction.
• Multiple_description_coding wikiPageWikiLink Internet.
• Multiple_description_coding wikiPageWikiLink MPEG-2.
• Multiple_description_coding wikiPageWikiLink MPEG-4.
• Multiple_description_coding wikiPageWikiLink Network_congestion.
• Multiple_description_coding wikiPageWikiLink Network_packet.
• Multiple_description_coding wikiPageWikiLink Packet_(information_technology).
• Multiple_description_coding wikiPageWikiLink Streaming_media.
• Multiple_description_coding wikiPageWikiLinkText "Multiple description coding".
• Multiple_description_coding hasPhotoCollection Multiple_description_coding.
• Multiple_description_coding wikiPageUsesTemplate Template:Multiple_issues.
• Multiple_description_coding subject Category:Coding_theory.
• Multiple_description_coding hypernym Technique.
• Multiple_description_coding type Article.
• Multiple_description_coding type Software.
• Multiple_description_coding type Article.
• Multiple_description_coding type Encoding.
• Multiple_description_coding type Page.
• Multiple_description_coding comment "Multiple description coding (MDC) is a coding technique that fragments a single media stream into n substreams (n ≥ 2) referred to as descriptions. The packets of each description are routed over multiple, (partially) disjoint paths. In order to decode the media stream, any description can be used, however, the quality improves with the number of descriptions received in parallel. The idea of MDC is to provide error resilience to media streams.".
• Multiple_description_coding label "Multiple description coding".
• Multiple_description_coding sameAs Codifica_a_descrizioni_multiple.
• Multiple_description_coding sameAs m.0dkprc.
• Multiple_description_coding sameAs Q3682206.
• Multiple_description_coding sameAs Q3682206.
• Multiple_description_coding wasDerivedFrom Multiple_description_coding?oldid=644227786.
• Multiple_description_coding isPrimaryTopicOf Multiple_description_coding.