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Efficient rate-distortion optimized media streaming for tree-reducible packet dependencies

par Röder, Martin;Cardinal, Jean ;Hamzaoui, Raouf
Editeur scientifique Surendar, Chandra;Griwodz, Carsten
Référence (18-19 January 2006: San Jose, California, USA), Multimedia computing and networking 2006, SPIE, Bellingham, Wash., page (40-51)
Publication Publié, 2006

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Résumé :

In packetized media streaming systems, packet dependencies are often modeled as a directed acyclic graph called the dependency graph. We consider the situation where the dependency graph is reducible to a tree. This occurs, for instance, in MPEG1 video streams that are packetized at the frame level. Other video coding standards such as H.264 also allow tree-reducible dependencies. We propose in this context efficient dynamic programming algorithms for finding rate-distortion optimal transmission policies. The proposed algorithms are much faster than previous exact algorithms developed for arbitrary dependency graphs. © 2006 SPIE-IS&T.