DocumentCode :
1944347
Title :
Scalable codec architectures for Internet video-on-demand
Author :
Girod, Bernd ; Färber, Niko ; Horn, Uwe
Author_Institution :
Telecommun. Lab., Erlangen-Nurnberg Univ., Germany
Volume :
1
fYear :
1997
fDate :
2-5 Nov. 1997
Firstpage :
357
Abstract :
The heterogeneous structure of the Internet is a great obstacle for establishing real-time video services. Scalable video codecs, generating bit-streams decodable at different rates, have been proposed to address the heterogeneity problem. In this paper, we review standard-compliant and non-compliant codec architectures for Internet video-on-demand. For compression based on the H.263 standard, we have developed a compatible architecture that allows to switch between pre-encoded bit-streamers of different bitrates. This architecture provides excellent streaming performance for point-to-point communication scenarios that offer a low delay feedback channel. Then we present a non-compliant fully scalable video codec based on a spatiotemporal resolution pyramid. This approach can encode embedded lower bit-rate layers at the same overall hit-rate as needed by H.263 single-layer coding and can also support multicasting. The complexity of both schemes is sufficiently low to allow software-only implementations of Internet video services. This is demonstrated by means of an implemented World Wide Web video server application.
Keywords :
Internet; computational complexity; interactive video; network servers; telecommunication standards; video codecs; H.263 standard; Internet video services; Internet video-on-demand; World Wide Web video server application; bit-streams; bitrates; complexity; compression; embedded lower bit-rate layers; heterogeneity problem; heterogeneous structure; low delay feedback channel; multicasting; noncompliant codec architectures; noncompliant fully scalable video codec; point-to-point communication scenarios; pre-encoded bit-streamers; real-time video services; scalable codec architectures; software-only implementations; spatiotemporal resolution pyramid; standard-compliant architectures; streaming performance; Bit rate; Communication switching; Decoding; Delay; Standards development; Streaming media; Switches; Video codecs; Video compression; Web and internet services;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signals, Systems & Computers, 1997. Conference Record of the Thirty-First Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
ISSN :
1058-6393
Print_ISBN :
0-8186-8316-3
Type :
conf
DOI :
10.1109/ACSSC.1997.680241
Filename :
680241
Link To Document :
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