Brochure

Live Wireless Low-
Latency Video Over IP
LiveShot
Comrex LiveShot™ delivers live video over a range of IP networks. LiveShot
is used by TV stations and networks to deliver high quality, low latency video
from anywhere Internet access is available. LiveShot leverages the success
of Comrex ACCESS audio IP codecs and uses the same technology to
smooth out the “bumps” on the public Internet to allow broadcast-quality
live video streaming. LiveShot is especially optimized to perform well on
challenging IP networks like 3G, 4G and satellite-based links.
Video
LiveShot encodes and decodes video
to the H.264 codec standard, which
is the state-of-the art codec for high
quality video using low network
bandwidth. For optimal video quality,
LiveShot encodes with H.264 HIGH
profile. Several other options within
the H.264 standard, many of which
are not implemented by competing
products due to complexity, are default
in LiveShot. All H.264 options that
maximize quality over poor networks
and decrease latency are implemented.
Audio
Comrex has years of experience encoding
live, low latency audio over IP networks
for broadcast, and LiveShot shows it. In
addition to standard AAC audio coding,
LiveShot utilizes HE-AAC and AAC-ELD
audio coding, both reducing network
bandwidth and lowering delay.
Latency
LiveShot can encode and decode an
audio/video stream with less than
200mS delay. Delay may be higher
based on encoding mode and network
factors. LiveShot uses an automatic
decoder buffer manager to keep delay to
an absolute minimum. This technology
was perfected over years of experience
with the BRIC series of audio codecs.
Channels
LiveShot delivers full-duplex video and
stereo audio between the field portable
and studio rackmount systems. In
addition, a full-duplex cue channel
is available between the systems.
On the portable, the return audio/
video channel is delivered via output
connectors, or streamed to a mobile
device via the built-in Wi-Fi access
point. The cue channel is accessible
on the portable via wired headset.
LIVESHOT
Comrex has developed Connect
Modems – pro-grade, high
performance cellular data
modems. To ensure that Comrex
customers experience the
highest degree of broadcast
reliable data transmission, each
device comes in a ruggedized,
industrial case with a carrier-
certified, high gain antenna
(2.1 dBi) and sturdy, customized
mounting hardware for LiveShot
Portable. LiveShot Connect
Modems are available for
Verizon, AT&T, and international
carriers.
LiveShot Connect Modems
LiveShot Portable