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Sura/Vide 2004 Workshop

Digital Video Working Group – RNP - Brazil. Using a Grid of Servers for Distributing High Quality Video over IP Networks. Guido Lemos de Souza Filho, PhD Departamento de Informática Universidade Federal da Paraíba. March 200 4. Sura/Vide 2004 Workshop. Outline. GTVD context

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Sura/Vide 2004 Workshop

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  1. Digital Video Working Group – RNP - Brazil • Using a Grid of Servers for Distributing High Quality Video over IP Networks Guido Lemos de Souza Filho, PhD Departamento de Informática Universidade Federal da Paraíba March 2004 Sura/Vide 2004 Workshop

  2. Outline • GTVD context • Server Grid Architecture • Implementation Issues • Initial Results • Conclusion

  3. GTVD Context • Brazilian digital video working group main goals: • Structure the Brazilian digital video community in a way that promotes cooperation • Set up a “Digital Video Network” over the RNP backbone • Computers, network resources, and software to provide a video distribution service • We have technical cooperation projects involving: • Loci-University of Tennessee, Canal Saúde, Mast (Astronomy Museum), Educational TV Networks, UFRN, UFPE, UFBA, UNIFACS, PUC-Rio, USP-SP, UFSC. • Telemedicine, Digital Television, Communication in Mixed Reality Environments • We are sponsored by RNP (Rede Nacional de Ensino e Pesquisa – National Research and Education Network)

  4. Servers Grid Architecture CS CS IBP Server IBP Server IBP Server IBP Server Storage Layer AS AS AS AS Access Layer Coordination Layer Client Client Client Client

  5. RNPDigital Video Working Group Search Engine Application Web Client Web clients find videos by accessing applications with relevant metadata and URLs... Video Distribution Scheme Coordination Layer Video Access Layer Storage Layer

  6. RNPDigital Video Working Group Web Client Coordination Server The client activates the URL that is processed by the coordination layer, which redirects the client to the nearest video server... Video Distribution Scheme Coordination Layer Video Access Layer Storage Layer

  7. RNPDigital Video Working Group Web Client Video Access Server Video Access Server Video Access Server The URL used in the redirection includes the video identifier and a route to the server with a persistent copy of the video... Video Distribution Scheme Coordination Layer Video Access Layer Storage Layer

  8. RNPDigital Video Working Group IBP Video Access Server IBP IBP The last video access server in the chain interacts with the IBP network to recover the stored video. The data stream then flows through the chain of access servers and is stored in each server´s cache while being played by the client... Video Distribution Schema coordination Layer Video Access Layer Storage Layer

  9. Implementation Issues - Video Servers

  10. Implementation Issues – Source Component

  11. Link Bandwidth RNPDigital Video Network CE  RJ CE  SP RN  RJ RN  SP PB  RJ PB  SP PE  RJ PE  SP DF  RJ DF  SP SC  RJ SC  SP RS  RJ RS  SP 6 MBps4 MBps4 MBps4 MBps2 MBps2 MBps8 MBps5 MBps22 MBps20 MBps24 MBps12 MBps25 MBps15 MBps DV-Net: Storage Servers (2) Video Access Servers (7)

  12. Initial Results

  13. Conclusion • We have implemented and tested a nation-wide video distribution service • The initial results have shown that the service is able to provide high-quality video, in spite of the low- speed network used

  14. On-going Activities • Integration with IBP network of storage servers • Integration of real time (already implemented) and VoD servers • Implementation of a scheduler application in order to organize the use and configuration of the backbone

  15. Digital Video Working Group – RNP - Brazil • Using a Grid of Servers for Distributing High Quality Video over IP Networks Guido Lemos de Souza Filho, PhD Departamento de Informática Universidade Federal da Paraíba March 2004 Sura/Vide 2004 Workshop

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