, . 1. IPTV , . , .
, DSL-, 7 /. 2 /. , , 5 /. , MPEG-2 . MPEG-2 HDTV-, .
( 6 /), , . , 15...20 %. , 8...12 / , -, MPEG- MPEG- . , HDTV , MPEG-4 AVC VC-1. , DVB Simulcrypt.
, , :
(ASI, IP, ATM, SDI);
(, , , , multicast unicast);
(DSL);
, , , );
MPEG-2 MPEG-4-;
MPEG-2 MPEG-4-;
DVB CAS / IP CAS.
IPTV- :
, ;
, ;
.
IPTV- , Scopus Video Networks, Terayon Communication Systems, Optibase Tandberg Television.
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IPTV MediaPIex 20 Tandberg Television, SkyStream, Tandberg Television. MediaPlex 20 Tandberg Television IPTV- ( - ) .
MediaPIex 20 IP- . , . IPTV . MediaPIex 20 MPEG-4 AVC VC-1 / Windows Media VC-9.
IP- MediaPIex 20 :
Video- ( , , , , ..);
MPEG-2 MPEG-4 / .264 (encoding);
MPEG-2 MPEG-4 / .264 (transcoding);
(remultiplexing/ demultiplexing);
(transting);
QoS ( , .. , , QoS);
MPEG over IP-.
, , , :
ATM - / STM1 ;
ATM DS-3 / -3;
ASI-;
Gigabit Ethernet (4 );
10/100 Ethernet.
MPEG- , S-video SDI.
IPTV MediaPIex 20 Stream Replications ( ), ATM, ASI Gigabit Ethernet , . , , VDSL ADSL. Stream Replications , , IP-DSLAM- ATM-DSLAM-.
MediaPlex 20 . 86 . :
48 MPEG-2 / MPEG-4;
48 MPEG-4 ;
64 ASI- / , 1000 / ;
144 .
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. . , , .
, . , MPEG-4 AVC VC-1:
.264 MPEG-2 , ;
VC-1 , MPEG-4, ;
.264 VC-1 2 MPEG-2 ;
.264 (Main Profile);
VC-1 (Advance Profile);
(de-blocking filter) ;
Blu-ray
HD-DVD.
IPTV-. , , . , . , MPEG-2 4 / , 1990- 8 /.
, . , IPTV- MPEG-2 ( , ) , , , . . MPEG-2 . , : , unicast-, , VoD, HDTV.
. HDTV.
, (.264 VC-1). . , .
, .264 .264 . VC-1 , VC-1 .