Title :
XML-driven Exploitation of Combined Scalability in Scalable H.264/AVC Bitstreams
Author :
De Schrijver, Davy ; De Neve, Wesley ; De Wolf, Koen ; Lambert, Peter ; Van Deursen, Davy ; Van de Walle, Rik
Author_Institution :
Dept. of Electron. & Inf. Syst., Ghent Univ.
Abstract :
The heterogeneity in the contemporary multimedia environments requires a format-agnostic adaptation framework for the consumption of digital video content. Scalable bitstreams can be used in order to satisfy as many circumstances as possible. In this paper, the scalable extension on the H.264/AVC specification is used to obtain the parent bitstreams. The adaptation along the combined scalability axis of the bitstreams is done in a format-independent manner. Therefore, an abstraction layer of the bitstream is needed. In this paper, XML descriptions are used representing the high-level structure of the bitstreams by relying on the MPEG-21 bitstream syntax description language standard. The exploitation of the combined scalability is executed in the XML domain by implementing the adaptation process in a streaming transformation for XML (STX) stylesheet. The algorithm used in the transformation of the XML description is discussed in detail in this paper. From the performance measurements, one can conclude that the STX transformation in the XML domain and the generation of the corresponding adapted bitstream can be realized in real time.
Keywords :
XML; video coding; H.264/AVC; MPEG-21 bitstream syntax description language standard; XML descriptions; XML stylesheet; XML-driven exploitation; contemporary multimedia environments; digital video content; format-agnostic adaptation framework; parent bitstreams; scalable bitstreams; streaming transformation; Automatic voltage control; Engines; Information systems; Measurement; Multimedia systems; Scalability; Static VAr compensators; Video coding; Video sequences; XML;
Conference_Titel :
Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on
Conference_Location :
New Orleans, LA
Print_ISBN :
1-4244-0920-9
Electronic_ISBN :
1-4244-0921-7
DOI :
10.1109/ISCAS.2007.378700