In Broadcast - November 2014 - 66

I N T E R N A T I O N A L

WWW.INBROADCAST.COM | ISSUE 37 - NOVEMBER 2014

N E W S

InTECH

Transmitting Broadcast Video
With No Strings Attached
Getting video moved around wirelessly has become more commonplace, but the twin bugbears
that the systems must overcome are centred on latency and range...

By Kieron Seth
Contributing Editor

D

espite being relatively light on
actual product launches, JVC's
IBC2014 press conference was very
enlightening. The continuing rollout
of advanced connectivity through
its camera range is an important
development and indicative of the
direction production equipment
is evolving. Whether it's the GYHM890 shoulder-mount camera
with interchangeable lenses or the
lightweight GY-HM650 camcorder,
live streaming is built in.

66

for distribution, and automatic
transcoding allows live, direct to
the web content delivery to content
providers. The service also provides
secure FTP file transfer from the field,
plus live monitoring and camera and
lens control via Wi-Fi from a smart
device (iPhone, iPad, or Android) or
from the studio via a 4G connection.
The system supports full metadata
which can be edited by operators
in the field.
JVC is certainly not
alone in rolling out this
kind of connectivity -
Sony and Panasonic
have both developed
competitive
offerings. Given
the sophistication
of this kind of
built-in technology,
GY-HM650 camcorder with LTE modem
supported by dedicated and
seemingly comprehensive delivery
"We believe the future is with the
live video streaming and FTP service
services, what is the role of third
fully integrated into the camera,"
party manufacturers in this area?
explained Edgar Shane, General
Manager of Engineering, JVC
Latency Issues
Professional Products, at the release
of the cameras earlier this year.
JVC's Professional Streaming
Services are designed to deliver
live HD content to the web and to
broadcast facilities. A built-in Zixi
engine streams to a 4G LTE, 3G,
or Wi-Fi network for transmission
to a broadcast facility in real-time.
Advanced Streaming Technology
provides content-aware error
correction, bandwidth shaping, and
real-time feedback of the streaming
status; this delivers error correction
to compensate for up to 30% packet
loss. When used in conjunction with
the cloud-based service, video
delivery can be delivered to the
Boxx TV's Meridian is a zero delay
Internet simply by entering an IP
system
address. Content can be directed
to multiple destinations, including
The specialist suppliers are clear
decoders for live broadcast. In this
on the advantages.
way, JVC allows stations to handle
"It is all about latency. Our systems
multiple camera coverage at any
are used for camera-back to OB
remote event: streams received by
truck or Satellite truck applications
the central broadcast facility can
where either zero or a small delay
simply be switched live.
of a few frames is needed. I have
Matrix switching manages signals
not seen any inbuilt camera systems

that have that capability.
Cameras like the JVC
GY-HM650 stream H.264
over 4G or WiFi with delay
of a few seconds," says
Alicia Young, Distribution
& Marketing Manager Real-time confidence monitoring for shoots
with Boxx TV.
Teradek's Michael Gailing agrees:
than one millisecond. The system
"Having a dedicated H.264 encoder
includes a built-in HDMI to HDoffers a number of benefits over
SDI converter, as well as external
integrated solutions that are
antennae for connection stability.
beginning to pop up in cameras.
Transmission distances are claimed
Encoders are typically a second
to extend to up to 300m in open
thought in cameras, with the primary
space and the product allows
focus and attention being paid to
for one transmitter to connect to
the camera and then the encoder."
multiple receivers. For peace of
IDX's new CW-F25 transmitter /
mind, XW-HDU04 HD has a backreceiver pair which can send video
up power failure function - if the
over long distances - up-to two
external power is disconnected,
it automatically switches to a
kilometres with optional external
antennae - with around six frames
connected battery.
of latency. The product supports
The material difference between
H.264 video at 25Mbps with four
the IDX and Pro-X systems are the
channels of embedded audio and
underlying technology: the former
timecode. It also carries a second
relies on H.264 encoding while
video stream over the link from an
the latter is underpinned by WHDI
IP camera or the Gigabit Ethernet
(Wireless Home Digital Interface).
connector on the receiver which can
This is almost certainly the same
route the feed into an IP server or
technology
onto a network. As well as offering
as is used
H.264 encoding and transmission,
by
other
the device incorporates video return,
manufacturers
intercom, tally and remote camera
including
Te l e t e s t i n
control. This level of functionality
its popular
and performance should easily
outstrip standard WiFi technology
Te l e s e n d
device and
built into camcorders.
Another launch at IBC was
Teradek's Bolt
Pro-X's XW-HDU04 HD wireless
range.
transmission system, optimised
According
to Teradek's
G a i l i n g ,
H.264-based
systems are
ideal for news
operations
where users
pass video
feeds from
The HD-SDI &
one
s t a t i o n HDMI Telesend
to
a n o t h e r, transmitter for
Pro-X's XW-HDU04 HD wireless
p r o d u c t i o n real-time
transmission system
companies need monitoring
for live real-time viewing on field
monitors, with latency of less
CONTINUED ON PAGE 68


http://www.linkedin.com/pub/dir/?first=Phillip&last=Izzard&search=Go https://twitter.com/inbroadcast http://www.youtube.com/watch?v=qpzEatLsHdE&feature=youtube_gdata_player https://www.facebook.com/InBroadcast http://itunes.apple.com/gb/app/inbroadcast/id468652679?mt=8 https://play.google.com/store/apps/details?id=com.branded.inbroadcast&feature=search_result#?t=W251bGwsMSwyLDEsImNvbS5icmFuZGVkLmluYnJvYWRjYXN0Il0 http://WWW.INBROADCAST.COM http://pro.jvc.com/prof/attributes/features.jsp?model_id=MDL102154 http://boxx.tv/products/meridian/ https://www.teletest.tv/hd-video-wireless-link/oze3645-hd-sdi-hdmi-digital-composite-video-pal-ntsc-analogue-receiver-sender-wireless-video-link-5-8-ghz-embedded-audio.aplos?type=product&rpid=2129&addHistory=productType&clearTabCookies=true http://www.pro-x.biz/product/xw-hdu04.htm

In Broadcast - November 2014

Table of Contents for the Digital Edition of In Broadcast - November 2014

In Broadcast - November 2014 - Intro
In Broadcast - November 2014 - Cover1
In Broadcast - November 2014 - Cover2
In Broadcast - November 2014 - 3
In Broadcast - November 2014 - 4
In Broadcast - November 2014 - 5
In Broadcast - November 2014 - 6
In Broadcast - November 2014 - 7
In Broadcast - November 2014 - 8
In Broadcast - November 2014 - 9
In Broadcast - November 2014 - 10
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In Broadcast - November 2014 - 14
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In Broadcast - November 2014 - 20
In Broadcast - November 2014 - 21
In Broadcast - November 2014 - 22
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In Broadcast - November 2014 - 26
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In Broadcast - November 2014 - Cover4
In Broadcast - November 2014 - S1
In Broadcast - November 2014 - S2
In Broadcast - November 2014 - S3
In Broadcast - November 2014 - S4
In Broadcast - November 2014 - S5
In Broadcast - November 2014 - S6
In Broadcast - November 2014 - S7
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In Broadcast - November 2014 - S9
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In Broadcast - November 2014 - S11
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