(EN)
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Coding Concept Allowing Parallel Processing, Transport Demultiplexer and Video
Bitstream
Abstract
5
A raw byte sequence payload describing a picture in slices, WPP substreams or tiles and
coded using context-adaptive binary arithmetic coding is subdivided or chopped into
tranches with continuing the context-adaptive binary arithmetic coding probability
adaptation across tranche boundaries. By this measure, tranche boundaries additionally
introduced within slices, WPP substreams or tiles do not lead to a reduction in the entropy 10
coding efficiency of these elements. On the other hand, however, the tranches are smaller
than the original slices, WPP substreams or tiles and accordingly they may be transmitted
earlier, i.e. with lower delay, than the un-chopped original entities, i.e. slices, WPP
substreams or tiles. In accordance with another aspect, which is combinable with the first
aspect, substream marker NAL units are used within a sequence of NAL units of a video 15
bitstream in order to enable a transport demultiplexer to assign data of slices within NAL
units to the corresponding substreams or tiles so as to be able to, in parallel, serve a multi-
threaded decoder with the corresponding substreams or tiles.
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FIG.3
