Open AccessBalancing MPEG Transcoding with Storage in Multiple‐Quality Video‐on‐Demand Services
Author(s) -
Song Minseok,
Sim Jeong Seop,
Go Jaedoo,
Lee Bumsun,
Park Soo Jun
Publication year - 2009
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.09.0208.0405
Subject(s) - transcoding , computer science , server , video server , scheme (mathematics) , video on demand , quality (philosophy) , computer network , storage management , quality of service , on demand , real time computing , distributed computing , multimedia , operating system , philosophy , epistemology , mathematical analysis , mathematics
To match the requirements of heterogeneous mobile devices, video objects may be transcoded, which requires considerable CPU resources. Alternatively, multiple versions of the same video may be stored on servers, but this requires a lot of disk space. We formulate the trade‐off between the versions that are stored on disk and the need for transcoding. We propose an optimal solution to this formulation based on dynamic programming. Experiments show that our scheme allows up to 68% more clients to be admitted than conventional schemes when a reasonable amount of storage is available.