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the MPEG-4 Part 2 encoder) for prescribed link capacities and loss constraints. ... In this paper we examine the implications of video traffic smoothing on the numbers of statistically multiplexed H.264 SVC, H.264/AVC, and MPEG-4 Part 2 streams, the bandwidth requirements for streaming ... Lina Karam, Arizona State University, for insightful discussions on video coding, and to Prasanth T. David for developing the automated scheduler of the encoding jobs. ...doi:10.1109/tbc.2009.2027399 fatcat:qtqhkzgqbzfxdptjzevkxxelzy
SEES Video Distribution Networks Using Remote Statistical Multiplexing > By lan Trow 5] 1 < ends for some time now. ... Direct-to-Home systems based on MPEG-2 video encoding are now = commonplace thus there is considerable pressure on content providers to make programming y available on multiple platforms, with voice and ...doi:10.5594/j16019 fatcat:botkzzqh6ffohepy35wxhzj7qm
Replacement of MPEG-2 by the H.264/AVC codec for satellite video services, including aggregated video for the DVB-RCS uplink, presents an opportunity to develop efficient statistical multiplexing. ... The number of channels in the multiplex can be increased through the scheme if there is a need to achieve an average of 40 dB PSNR across all inputs. ... H.264/AVC can use the same MPEG-2 Transport Stream (TS)  as previously employed by the MPEG-2 codec itself. ...doi:10.1007/978-3-642-13618-4_12 fatcat:zxfumw3iubeallond2epp3rrde
SMPTE Motion Imaging Journal
The purpose of this paper is to propose a new allocation method based on video impairment metrics.2> Statcast, the Statistical Multiplex System A statistical multiplexing system includes several MPEG-2 ... computation, so that each encoder produces an MPEG-2-compliant bit Pascal van Kesteren stream. ...
A wide array of video transport mechanisms has been developed and evaluated, based primarily on the characteristics of MPEG-2 and MPEG-4 Part 2 encoded video , . ... as statistical multiplexing of streams. ... We consider the five long CIF sequences described in Section IV, and encode them with H.264/AVC using GoP structure G16-B3, with H.264 SVC using GoP structure G16-B15, and with MPEG-4 Part 2 using GoP ...doi:10.1109/tbc.2008.2000422 fatcat:mltzqyhjb5cr7awxj6sz7bwjh4
This study revealed that not all DVB providers are using statistical multiplexing. ... The method developed in this research can be implemented even in optimized statistical multiplexing systems, due to a residual use of null packets for data rate adjustment. ... The multiplexer evaluates the output bit rate of each encoder (MPEG Video) and adjust (using Mquant output) the encoding algorithm to keep the Transport Stream bit rate within allowed limits. ...arXiv:1402.0812v1 fatcat:ewrjnss2prgvhkg72d5m2cvkda
Frame level H.264/MPEG encoded VBR video traffic is highly bursty in nature because of inherent coding techniques employed. ... We have tested the technique with high quality frame size traces of Star Wars-IV encoded using H.264/SVC and H.264/AVC to justify our claims. ... INTRODUCTION With the ever growing demand for network resources, allocation of resources for a bursty frame size VBR video traffic from MPEG/H.264 encoders is quite challenging. ...doi:10.5121/ijcsit.2010.2205 fatcat:cybywafmm5bozkgw2pc6qdqrla
Broadband Access Systems
Two layer encoding is shown to have significantly better statistical multiplexing gains than one-layer video, when the network admits calls based on a leaky-bucket characterization. ... We consider the problem of delivering constant quality video using variable bit rate encoding. A traffic model is proposed for three different encoding types (H.261, MPEG2: one and two layer). ... VIDEO ALGORITHMS AND DATA COLLECTION One-layer encoder In this paper we model both video-conferencing data generated using the H.261 recommendation [17, 18] and full-motion video coded using MPEG-2 ...doi:10.1117/12.257358 fatcat:ny7qwtvurfentiomtjifsee2me
In addition, the majority of the complete MPEG-2 encoders are replaced by much less complex MPEG-2 transcoders. ... The freeing of numerous transponders, the elimination of numerous playback systems, and the replacement of the complete MPEG-2 encoders with MPEG-2 transcoders provide a much more cost-effective solution ... MPEG-2 video specification  , specifies the syntax and the decoding semantic for an MPEG-2 compliant video stream. ...doi:10.1109/icassp.1999.758379 dblp:conf/icassp/KooNW99 fatcat:unz64j2kl5ff3haw7inbfvp7jm
2007 International Conference on Intelligent and Advanced Systems
Each program can be independently encoded or jointly encoded resulting thus in a more efficient way to distribute the available channel bandwidth. ... This paper presents a combined coding scheme for multi-program video transmission in which the channel capacity is distributed among the programs according to the program complexities. ... Video Encoder 1 Encoder Buffer 1 Bitstrea m Video Source Encoder Buffer 2 Bitstrea m Video Source Multiplexer R R 2 R n Channel Joint Rate Control Video Encoder 2 ...doi:10.1109/icias.2007.4658462 fatcat:jquekm6vbvh2jhj664idmntqhu
SMPTE Motion Imaging Journal
NOISE REDUGTION PREPROCESSING FOR MPEG-2 ENCODING domain, led engineers to begin working with embed- ding the noise reduction as a preprocessing stage in MPEG-2 encoders. ... For example, in a statistical multiplexing system (with a closed loop architecture), the statistical multiplex con- troller has adequate time to efficiently allocate bit rates to all members of the pool ...
SMPTE Motion Imaging Journal
It makes some provisions for supporting switching of program segments, but the results of using MPEG-2 switching facilities alone can be relatively crude by enter- tainment media standards. ... receivers and other devices into which MPEG-2 decoders will be incorporated. ...
Still, our results on attempting to model single MPEG-4 videoconference sources provide significant insight and help to build a Discrete Autoregressive (DAR(1)) model to "capture" the behavior of multiplexed ... Due to the burstiness of video traffic, video modeling is very important in order to evaluate the performance of future wired and wireless networks. ... Their valuable remarks and suggestions have significantly helped us enhance our work. ...doi:10.1016/j.peva.2007.02.004 fatcat:j7pj5yqiergj3lqbpmfjgwtm3y
Multimedia Computing and Networking 1995
In this paper, we statistically characterized four VBR encoded video sequences, containing I/B/P frames, at the Slice layer with the goal of developing an accurate source model to better understand the ... We showed that coefficient-of-variation reduced in half and bandwidth requirements reduced by 41% using TSM. 1 ... ACKNOWLEDGEMENTS We would like to thank the Portable Video Research Group for providing the four video sequences as well as encoding information. ...doi:10.1117/12.206053 fatcat:dl2dm3x53zbjbg2ydxiwd44qcq
High Performance Networking
While many methods for coding and compressing this video have been proposed, it is likely that the MPEG standard will be commonly used for the delivery of new video services over high speed networks, such ... In this paper, we explore the effect of the MPEG Group of Pictures (GOP) structure on the performance of a multiplexer carrying this video traffic from a number of independent sources. ... This unique property of MPEG coded videos prevents us from using video models which are based on statistical data from video sequences which have only one frame type or ignore the GOP structure, like ...doi:10.1007/978-0-387-34949-7_12 fatcat:byey5c47frfshbup7wf3ng3mea
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