The recent H. 264 video coding standard introduces an innovative compression tool allowing fast bit-rate switching. The tool, based on the novel syntactic element Switching Pictures (SP), allows flexible rate adaptation and is expecially suitable for streaming applications in wireless networks. This work addresses the modeling of a H. 264 source performing bit-rate switching using SP frames. The coded bitstream structure is modelled as a Markov chain with frame size distribution depending on the frame coding mode. The performances of the model are assessed by comparison of the cell loss rate of a fixed size buffer filled with a synthetic source implementing the model and by a real H. 264 codec.
Modeling of H.264 video source performing bitstream switching / Colonnese, Stefania; Panci, G; Rinauro, Stefano; Scarano, Gaetano. - ELETTRONICO. - (2007). (Intervento presentato al convegno 26th Picture Coding Symposium. tenutosi a Lisbon; Portugal nel Novembre 2007).
Modeling of H.264 video source performing bitstream switching
COLONNESE, Stefania;RINAURO, STEFANO;SCARANO, Gaetano
2007
Abstract
The recent H. 264 video coding standard introduces an innovative compression tool allowing fast bit-rate switching. The tool, based on the novel syntactic element Switching Pictures (SP), allows flexible rate adaptation and is expecially suitable for streaming applications in wireless networks. This work addresses the modeling of a H. 264 source performing bit-rate switching using SP frames. The coded bitstream structure is modelled as a Markov chain with frame size distribution depending on the frame coding mode. The performances of the model are assessed by comparison of the cell loss rate of a fixed size buffer filled with a synthetic source implementing the model and by a real H. 264 codec.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.