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6 © 2005 VBrick Systems, Inc.
demand content or live video streams, select a stream, and begin viewing television-quality
video. Set-Top Box users can also record video directly on the ETV Portal Server using the
remote control or the wireless keyboard.
VBrick Encoders/Decoders
VBrick's VB4000-5000-6000 Series MPEG-2 network video appliances provide DVD quality
video and CD quality audio at 1–15 Mbps of bandwidth. MPEG-2 is the world's most
popular digital compression technology and is used to encode DVDs as well as Digital Cable
and Digital Satellite broadcasts. VBrick's VB4000-5000-6000 Series MPEG-4 encoders and
decoders are versatile and reliable video appliances for one or two-way interactive
communications over low or medium bandwidth IP networks. The VBrick MPEG-4
encoder/decoder can be used for webcasting, multicasting, transcoding, and two-way
interactive video. Designed for streaming over the Internet at lower bit rates (56K, 128K,
384K0 and over a LAN at higher rates (1Mbps and above).
Additional Portal Server Components
The ETV Network Video Recorder and the ETV Live Portal Server are optional components
that are purchased and installed separately. They have different license files that must be
installed separately. See Portal Server License Files
on page 7.
ETV Network Video Recorder
The ETV Network Video Recorder lets you off-load all recording tasks from the ETV Portal
Server machine to a separate "recorder server" machine. This optimizes recording
performance as well as ETV Portal Server performance. The Network Video Recorder uses
ETV Portal Server components and requires two machines: the ETV Portal Server is installed
on one machine; the Network Video Recorder software is installed on a different machine.
Once installed, the NVR machine is used for all ETV Portal Server recording tasks. The NVR
has no GUI and runs continually as a background service. You simply install the NVR
software and change the Recorder Server configuration to match the new server. See the
ETV Network Video Recorder Release Notes for more details and installation instructions.
ETV Live Portal Server
The ETV Live Portal Server provides ETV functionality that is limited to scheduling and
viewing live streams. It does not integrate with a VoD server and there is no functionality for
browsing the video library.
Note A standard ETV Portal Server permits two concurrent recording operations. If you
purchase and install a Network Video Recorder, the number of concurrent
recording operations is fixed by the terms of your licensing agreement with VBrick.