?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Optimal+set+of+video+representations+in+adaptive+streaming&rft.creator=Toni%2C+L&rft.creator=Aparicio-Pardo%2C+R&rft.creator=Simon%2C+G&rft.creator=Blanc%2C+A&rft.creator=Frossard%2C+P&rft.description=Adaptive+streaming+addresses+the+increasing+and+heterogenous+demand+of+multimedia+content+over+the+Internet+by+o%C3%A9ring+several+streams+for+each+video.+Each+stream+has+a+di%C3%A9rent+resolution+and+bit+rate%2C+aimed+at+a+specific+set+of+users%2C+e.g.%2C+TV%2C+mobile+phone.+While+most+existing+works+on+adaptive+streaming+deal+with+optimal+playout-control+strategies+at+the+client+side%2C+in+this+paper+we+concentrate+on+the+providers'+side%2C+showing+how+to+improve+user+satisfaction+by+optimizing+the+encoding+parameters.+We+formulate+an+integer+linear+program+that+maximizes+users'+average+satisfaction%2C+taking+into+account+the+network+characteristics%2C+the+type+of+video+content%2C+and+the+user+population.+The+solution+of+the+optimization+is+a+set+of+encoding+parameters+that+outperforms+commonly+used+vendor+recommendations%2C+in+terms+of+user+satisfaction+and+total+delivery+cost.+Results+show+that+video+content+information+as+well+as+network+constraints+and+users'+statistics+play+a+crucial+role+in+selecting+proper+encoding+parameters+to+provide+fairness+among+users+and+reduce+network+usage.+By+combining+patterns+common+to+several+representative+cases%2C+we+propose+a+few+practical+guidelines+that+can+be+used+to+choose+the+encoding+parameters+based+on+the+user+base+characteristics%2C+the+network+capacity+and+the+type+of+video+content.&rft.publisher=ACM&rft.contributor=Zimmermann%2C+R&rft.date=2014-03-19&rft.type=Proceedings+paper&rft.language=eng&rft.source=+++++In%3A+Zimmermann%2C+R%2C+(ed.)+MMSys+'14%3A+Proceedings+of+the+5th+ACM+Multimedia+Systems+Conference.++(pp.+pp.+271-282).++ACM%3A+New+York%2C+USA.+(2014)+++++&rft.format=text&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F1533083%2F1%2FToni_optimal_set_of_video_representations.pdf&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F1533083%2F&rft.rights=open