@InProceedings{Ransburg2005a, author = {Ransburg, Michael and Timmerer, Christian and Hellwagner, Hermann}, booktitle = {Proceedings of the First International Conference on Multimedia Services Access Networks (MSAN 2005)}, title = {Transport mechanisms for metadata-driven distributed multimedia adaptation}, year = {2005}, address = {Orlando, USA}, editor = {N,A}, month = jun, pages = {25-29}, publisher = {IEEE CS Press}, abstract = {The information revolution of the last decade has resulted in a phenomenal increase in the quantity of multimedia content available to an increasing number of different users with different preferences who access it through a plethora of devices and over heterogeneous networks. In order to address the amount of different content types, MPEG-21 Digital Item Adaptation (DIA) introduces interoperable description tools which enable coding format independent adaptation. Bandwidthefficient transport of the content to terminals with different capabilities and through a variety of access networks with various characteristics requires adaptation facilities not only on the server but also within the network. In this paper we present transport mechanisms for MPEG-21-based metadata enabling generic adaptation within the network. Three different transport mechanisms for delivering this metadata in conjunction with the corresponding multimedia content are evaluated and a payload format for the transport of this metadata is presented. Furthermore, we performed measurements which demonstrate the bandwidth benefits of our distributed adaptation approach compared to server-centric adaptation in a multicast scenario. Finally, we applied various encoding formats for the metadata which further reduces the metadata overhead.}, doi = {10.1109/MSAN.2005.1489936}, isbn10 = {0-7803-9319-8}, keywords = {MPEG-21 Digital Item Adaptation; distributed multimedia adaptation; metadata transport}, language = {EN}, pdf = {https://www.itec.aau.at/bib/files/Transport Mechanisms for Metadata-driven Distributed Multimedia Adaptation.pdf}, talktype = {none} }