CaptainMarion’sVideographydeliversInternetdigitalvideousing9MPEGvideoencodersandastatisticalmultiplexer.Channelsarepackedintoa6-MHzchannelbandwidth.TheMPEGmultiplexemonitorsandallocatestheappropriatebandwidth.Themultiplexermeasuresavailable bandwidthandfeedsbacksignalingtotheMPEGencoders.Codingratesarethenincreasedordecreased.Packetgenerationfromeachinputsourceiscontrolledsuchthatnopacketsaredroppedandnoextranullpacketscanbegenerated.Thesebandwidthandtrafficrequirementsworkbestwithwhichmodeofvideodelivery？（）A. fixed broadcastB. open loopedC. quality equalizationD. VoD delivery

单项选择题

Captain Marion’s Videography delivers Internet digital video using 9 MPEG video encoders and astatistical multiplexer. Channels are packed into a 6-MHz channel bandwidth.The MPEGmultiplexe monitors and allocates the appropriate bandwidth. The multiplexer measures available bandwidth and feeds back signaling to the MPEG encoders. Coding rates are then increased ordecreased. Packet generation from each input source is controlled such that no packets aredropped and no extra null packets can be generated. These bandwidth and traffic requirements work best with which mode of video delivery？（）

A. fixed broadcast
B. open looped
C. quality equalization
D. VoD delivery

CCDP(642-874)