Definition
An encryption scheme enabling fine granularity scalable access control of multimedia with a single encrypted code stream.
When it comes to the transmission of video, it is often desired that the data is encoded in a scalable manner, i.e., various quality representations can be extracted from a single code stream. Traditional encryption method may destroy the scalability of the original code stream. Layered Access Control (LAC) for MPEG-4 Fine Granularity Scalable (FGS) video preserves scalabilities in a cipherstream, controls the access to each quality layer with different keys, and supports multiple access types (PSNR and bitrate) simultaneously [1]. This provides support for business models in which a consumer pays according to the quality of service he or she requests. PSNR layers are usually used for quality-based access such as local play, while bitrate layers are used for streaming and other applications where bandwidth constraints are of a major concern.
PSNR layers...
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
C. Yuan, B.B. Zhu, M. Su, X. Wang, S. Li, and Y. Zhong, “Layered Access Control for MPEG-4 FGS Video,” IEEE International Conference on Image Processing, Vol. 1, 2003, pp. 517–520.
J. Stern and S. Vaudenay. “CS-Cipher.” Fifth International Workshop on Fast Software Encryption, Berlin, Germany, March 1998.
B.B. Zhu, M. Feng, S. Li, “An Efficient Key Scheme for Layered Access Control of MPEG-4 FGS Video,” IEEE International Conference on Multimedia and Expo, Vol. 1, 2004, pp. 443–446.
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2008 Springer-Verlag
About this entry
Cite this entry
(2008). Layered Access Control for Mpeg-4 Fine Granularity Scalable Video. In: Furht, B. (eds) Encyclopedia of Multimedia. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-78414-4_34
Download citation
DOI: https://doi.org/10.1007/978-0-387-78414-4_34
Publisher Name: Springer, Boston, MA
Print ISBN: 978-0-387-74724-8
Online ISBN: 978-0-387-78414-4
eBook Packages: Computer ScienceReference Module Computer Science and Engineering