In Broadcast - June 2013 - 57


ISSUE 20 - JUNE 2013 | WWW.INBROADCAST.COM

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

N E W S

InFILE
Wireless Video Links: An Overview Cont.
flexible you are in the production.
Note that the range is measured
in clear line-of-site and the actual
range will be determined by the
number and material of obstacles
in the way between the transmitter
and receiver;
Compression: Most wireless
video links in the market utilise
a compression CODEC to
reduce content size, as wireless
transmission has limited capacity.
Wireless systems use compression
CODECs like MPEG-2, H.264,
JPEG2000 and in the future the
upcoming H.265. Most systems
compress the video before wireless
transmission and un-compress it at
the receiver side. Some solutions, in
an effort to save cost, transfer the
video directly without compression.
This can be done only for a very
short range (of few meters) and it
compromises image quality;
Unlicensed / Licensed
Frequencies: Until a few years
ago, only large networks could
use wireless equipment because
it required purchasing expensive
frequency licenses from the
regulator. In recent years, however,
governments and regulators around

ABonAir demonstrate Wireless HD

the world provide unlicensed
frequencies for public use for
any purpose – including video
transmission – allowing even smaller
productions to use wireless links
easily and free of charge. To answer
this demand, manufacturers started
to develop unlicensed solutions.
Unlicensed systems’ volume grew
and drove cost down, motivating
big networks to also use them even

though they own frequencies;
Uni-directional / Bi-directional
Technologies: In uni-directional links,
the transmitter sends video content
to the receiver without receiving
any feedback. In bi-directional
links, both transmitter and receiver
can send and receive data and
control information: a packet
acknowledgment mechanism
identifies errors and quickly fixes

them (by re-transmitting the
corrupted data), before the frame
is presented. This enables bidirectional solutions to assure that
all the data is well received without
errors hence increase picture quality;
Delay between transmission and
reception can vary from 1ms in
short range solutions to up to 10
seconds for cellular based solution.
In most applications like ENG and
Sports, delay of 100ms does not
pose a problem; in live concerts
minimal delay is preferred. Most
OFDM based solutions offer delay
between 40ms to 200ms.
The WiFi and Cellular solution
typically have 1-2 second delay
and uncompressed solutions have
about 1ms of latency.
Wireless video link solutions also
differ in their feature set. Some
support CCU (Camera Control
Unit) to control the camera from the
central point, other support Intercom
for communication between the
Cameraman and the director and
some have Tally light. Some high
end solutions support all these
features that are mainly needed for
more complex productions, where
more than one camera is used.
57


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Table of Contents for the Digital Edition of In Broadcast - June 2013

In Broadcast - June 2013
Contents
InNews: Rogers Opts for Quantel at City Montreal
InNews: Vizrt and Mosart Enter Newsroom Partnership
InForm: Istreamplanet Live-Video Workflow
InReply: BSI Wireless Camera Captures the Action
InFocus: Sound Devices Pix 240 Sprints Ahead
InView: Bradley Engineering Focuses on Remote Camera Control Systems
InView: Government Tax Breaks: The Devil Is in the Detail
InMedia: In Demand Uses Aja to Create Promotional Content
InMedia: Ihse Draco Kvm-Matrix Switchers Support Broadcast It Workflow
InMedia: Media Production - the Next Generation
In Broadcast - June 2013 - Intro
In Broadcast - June 2013 - In Broadcast - June 2013
In Broadcast - June 2013 - Cover2
In Broadcast - June 2013 - Contents
In Broadcast - June 2013 - InNews: Rogers Opts for Quantel at City Montreal
In Broadcast - June 2013 - 5
In Broadcast - June 2013 - InNews: Vizrt and Mosart Enter Newsroom Partnership
In Broadcast - June 2013 - 7
In Broadcast - June 2013 - 8
In Broadcast - June 2013 - 9
In Broadcast - June 2013 - 10
In Broadcast - June 2013 - 11
In Broadcast - June 2013 - 12
In Broadcast - June 2013 - 13
In Broadcast - June 2013 - 14
In Broadcast - June 2013 - 15
In Broadcast - June 2013 - 16
In Broadcast - June 2013 - 17
In Broadcast - June 2013 - 18
In Broadcast - June 2013 - 19
In Broadcast - June 2013 - 20
In Broadcast - June 2013 - 21
In Broadcast - June 2013 - InForm: Istreamplanet Live-Video Workflow
In Broadcast - June 2013 - 23
In Broadcast - June 2013 - InReply: BSI Wireless Camera Captures the Action
In Broadcast - June 2013 - 25
In Broadcast - June 2013 - 26
In Broadcast - June 2013 - 27
In Broadcast - June 2013 - 28
In Broadcast - June 2013 - 29
In Broadcast - June 2013 - 30
In Broadcast - June 2013 - 31
In Broadcast - June 2013 - 32
In Broadcast - June 2013 - 33
In Broadcast - June 2013 - 34
In Broadcast - June 2013 - 35
In Broadcast - June 2013 - 36
In Broadcast - June 2013 - 37
In Broadcast - June 2013 - 38
In Broadcast - June 2013 - 39
In Broadcast - June 2013 - 40
In Broadcast - June 2013 - 41
In Broadcast - June 2013 - 42
In Broadcast - June 2013 - 43
In Broadcast - June 2013 - InFocus: Sound Devices Pix 240 Sprints Ahead
In Broadcast - June 2013 - 45
In Broadcast - June 2013 - 46
In Broadcast - June 2013 - 47
In Broadcast - June 2013 - 48
In Broadcast - June 2013 - 49
In Broadcast - June 2013 - 50
In Broadcast - June 2013 - 51
In Broadcast - June 2013 - 52
In Broadcast - June 2013 - 53
In Broadcast - June 2013 - 54
In Broadcast - June 2013 - 55
In Broadcast - June 2013 - 56
In Broadcast - June 2013 - 57
In Broadcast - June 2013 - 58
In Broadcast - June 2013 - 59
In Broadcast - June 2013 - InView: Bradley Engineering Focuses on Remote Camera Control Systems
In Broadcast - June 2013 - 61
In Broadcast - June 2013 - InView: Government Tax Breaks: The Devil Is in the Detail
In Broadcast - June 2013 - 63
In Broadcast - June 2013 - 64
In Broadcast - June 2013 - 65
In Broadcast - June 2013 - 66
In Broadcast - June 2013 - 67
In Broadcast - June 2013 - InMedia: In Demand Uses Aja to Create Promotional Content
In Broadcast - June 2013 - 69
In Broadcast - June 2013 - 70
In Broadcast - June 2013 - 71
In Broadcast - June 2013 - InMedia: Ihse Draco Kvm-Matrix Switchers Support Broadcast It Workflow
In Broadcast - June 2013 - 73
In Broadcast - June 2013 - InMedia: Media Production - the Next Generation
In Broadcast - June 2013 - 75
In Broadcast - June 2013 - 76
In Broadcast - June 2013 - 77
In Broadcast - June 2013 - 78
In Broadcast - June 2013 - 79
In Broadcast - June 2013 - 80
In Broadcast - June 2013 - 81
In Broadcast - June 2013 - Cover3
In Broadcast - June 2013 - Cover4
In Broadcast - June 2013 - S1
In Broadcast - June 2013 - S2
In Broadcast - June 2013 - S3
In Broadcast - June 2013 - S4
In Broadcast - June 2013 - S5
In Broadcast - June 2013 - S6
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http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201812
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http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_NewYork2018
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http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201803
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http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201801
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201712
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201711
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201710
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_NABSHOWNYexpo2017
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201709
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_inshowguide2017
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201708
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201707
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201705
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_NABSHOW2017
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201704
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_cabsat2017
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201703
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201702
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201701
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_INREVIEW2016
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201612
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201611
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_NABSHOWNYexpo
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_20110708_DEMO
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201610
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_inshowguide2016
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201609
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201608
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201607
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201606
http://europe.nxtbook.com/nxtbooks/lesommet/inbroadcast_APAC03
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201605
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_NABSHOW2016
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201604
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201603
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_cabsat2016
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201602
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http://www.nxtbook.com/nxtbooks/lesommet/inbroadcast_APAC02
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201512
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201511
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_CCW15expo
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201510
http://www.nxtbook.com/nxtbooks/lesommet/inbroadcast_APAC01
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201509
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_IBC2015
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http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_BROADCASTASIA2015
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http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201504
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_NABSHOW2015
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201503
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_cabsat2015
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201502
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http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201412
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