In Broadcast - October 2012 - 26
I N T E R N A T I O N A L
N E W S
WWW.INBROADCAST.COM | ISSUE 13 - OCTOBER 2012
InGEAR
Evolution In Camera And Audio Links Cont.
someone has not been able to find “clean spectrum”. As Meridian operates only over short distances Boxx TV developed a longer-range system for location work, the Zenith. This also works in the 5GHz range - specifically 5.1-5.9GHz, giving approximately 30 channels – and runs on H.264 compression. The links for this system are carried over WiFi but Walker emphasises this is the industrial band version, not the kind of connection found in your nearest hotspot. BSI (Broadcast Sports International) produces a range of camera control systems, as well as point-of-view and on-board cameras. It also holds what it claims is the largest stock of Link SD/HD wireless transmitters and receivers in the world. The company started out in the US nearly 30 years ago, providing camera systems to go in NASCAR racing cars. The company has expanded over the years; the technology now also used for coverage of Indy car races, the World Series and the Super Bowl. Last year BSI opened a UK office and it will enable it to supply equipment on a dry hire basis to more sports productions; it has already provided RF systems for Formula 1 Grand Prix in Australia and Malaysia. The miniature on-board cameras remain a key part of BSI’s offering; Business Development Director Dave Remnant says the major difference between these and other systems is that the BSI technology is not locked off but can be panned to follow any vehicles passing or being passed by the car with the camera. Another part of the BSI range is a dual stream transmitter that sends signals using FDM (Frequency Division Multiplexing) technology over 20MHz bandwidth links. Remnant explains that BSI works in the microwave portions of the RF spectrum because “there is more bandwidth available”. He acknowledges that the changes in spectrum allocation currently will put “everyone under pressure”, with uncertainty over where frequencies will be. BSI’s technology uses MPEG4 H.264 compression but Remnant agrees that people are already looking at what advantages H.265 might bring in the future, observing that “all algorithms improve as encoding chips get more efficient”. Telecast, comments that although there is still “a good amount of RF” to be used, fibre has advantages in providing bandwidth over long distances and has become “de facto” for transmission, replacing triax, which was the main carrier ten years ago.
Rise Of IP
While more traditional broadcast engineering systems are still mainstays in TV distribution, IT-based techniques, notably IP (internet protocol), are making themselves felt in this field. In the last five years several developers and service companies have appeared offering IP codecs and processors for live broadcasting, notably LiveU, Mobile Viewpoint and Groovy Gecko and its associate company SatStream. Groovy Gecko works on web conferences for international companies such as Microsoft and live broadcasts, running transmissions in formats to suit the application, including Flash, iPhone and iPad MP4, Windows Media, Real Networks, QuickTime and 3GP. Earlier this year the company was involved in providing the infrastructure for round-theclock live streams over satellite on the Channel 4 programme Foxes Live: Wild in the City, covering two remote fox dens. While the pictures are the main focus, Craig Moehl, Chief Executive of Groovy Gecko and a Director of SatStream, says that in IP broadcast “audio is more important than video”. This is because, he explains, the human brain is more forgiving when a picture frame drops out but if the sound cuts or is distorted, the ear is not as accommodating, making the glitch much more of a problem. “Things become problematic when the audio stream stops so we’ve got to ensure that it is absolutely consistent,” Moehl says. To guarantee a more stable audio
Craig Moehl, Chief Executive, Groovy Gecko
“...Things become problematic when
the audio stream stops so we’ve got to ensure that it is absolutely consistent.
feed technology companies have in recent years moved away from older streaming protocols and media players to established technologies HTTP (Hypertext Transfer Protocol), which is the basis of the emerging MPEG DASH (Dynamic Adaptive Streaming over HTTP) format. Moehl says AAC (Advanced Audio Coding) is part of this, giving scope for Dolby Digital Plus to be used, although surround sound is not yet a major consideration in the new multiplatform/device consumer world.
Fibre Benefits
Another veteran of the camera transmission market is Telecast, which has been around for 23 years and is now part of the Belden group. Its main product is the CopperHead fibre optic transceiver, which is used widely in sports and ENG/SNG broadcasting, as well as digital cinematography. CopperHead is in its third generation version, able to handle 3D or Dual-Link signals. In the last ten years sports venue operators have been installing fibre infrastructures for both IT and broadcasting. Premier League football stadia in England have been equipped with fibre to meet the requirements of broadcasters now working in HD and 3D, while golf’s governing body, the Royal & Ancient, has been installing the technology at the courses being used for the Open tournament. Darren Fordham, Manager of Sports Business Development for
”
26
Bonded Mobile
LiveU made its first moves into broadcasting during the 2008 Beijing Olympics, since when its backpack and handheld 4GLTE/3G, HSPA+, WiMAX and WiFi cellular systems have been used on events
CONTINUED ON PAGE 30
BSI’s pan tilt roll zoom camera and remote control panel
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In Broadcast - October 2012
Table of Contents for the Digital Edition of In Broadcast - October 2012
In Broadcast - October 2012
Contents
PO Group Invest in 4k SGO Mistika Solution
BBC Entertainment Launches in Malaysia
AJA KI Pro Eases Elton John Show Workflow Transition
Bolshoi Theatre Install RTS System
Canal+ Sports Opts for Orad Power Wall
SIS LIVE Rolls Out OB 14 HD Truck
OCC’s Bill Smith Answers on the Technical Challenges
4KTV? Not So Fast!
ChyronIP Powers Graphics on Newtek Tricaster
Take Control With Rascular’s Helm
In Broadcast - October 2012 - Intro
In Broadcast - October 2012 - In Broadcast - October 2012
In Broadcast - October 2012 - 2
In Broadcast - October 2012 - Contents
In Broadcast - October 2012 - PO Group Invest in 4k SGO Mistika Solution
In Broadcast - October 2012 - 5
In Broadcast - October 2012 - BBC Entertainment Launches in Malaysia
In Broadcast - October 2012 - 7
In Broadcast - October 2012 - 8
In Broadcast - October 2012 - 9
In Broadcast - October 2012 - 10
In Broadcast - October 2012 - 11
In Broadcast - October 2012 - 12
In Broadcast - October 2012 - 13
In Broadcast - October 2012 - 14
In Broadcast - October 2012 - 15
In Broadcast - October 2012 - 16
In Broadcast - October 2012 - 17
In Broadcast - October 2012 - 18
In Broadcast - October 2012 - 19
In Broadcast - October 2012 - 20
In Broadcast - October 2012 - 21
In Broadcast - October 2012 - 22
In Broadcast - October 2012 - 23
In Broadcast - October 2012 - 24
In Broadcast - October 2012 - 25
In Broadcast - October 2012 - 26
In Broadcast - October 2012 - 27
In Broadcast - October 2012 - 28
In Broadcast - October 2012 - 29
In Broadcast - October 2012 - AJA KI Pro Eases Elton John Show Workflow Transition
In Broadcast - October 2012 - 31
In Broadcast - October 2012 - 32
In Broadcast - October 2012 - 33
In Broadcast - October 2012 - 34
In Broadcast - October 2012 - 35
In Broadcast - October 2012 - 36
In Broadcast - October 2012 - 37
In Broadcast - October 2012 - Bolshoi Theatre Install RTS System
In Broadcast - October 2012 - 39
In Broadcast - October 2012 - 40
In Broadcast - October 2012 - 41
In Broadcast - October 2012 - Canal+ Sports Opts for Orad Power Wall
In Broadcast - October 2012 - 43
In Broadcast - October 2012 - 44
In Broadcast - October 2012 - 45
In Broadcast - October 2012 - 46
In Broadcast - October 2012 - 47
In Broadcast - October 2012 - 48
In Broadcast - October 2012 - SIS LIVE Rolls Out OB 14 HD Truck
In Broadcast - October 2012 - 50
In Broadcast - October 2012 - 51
In Broadcast - October 2012 - 52
In Broadcast - October 2012 - 53
In Broadcast - October 2012 - OCC’s Bill Smith Answers on the Technical Challenges
In Broadcast - October 2012 - 55
In Broadcast - October 2012 - 4KTV? Not So Fast!
In Broadcast - October 2012 - 57
In Broadcast - October 2012 - 58
In Broadcast - October 2012 - 59
In Broadcast - October 2012 - ChyronIP Powers Graphics on Newtek Tricaster
In Broadcast - October 2012 - 61
In Broadcast - October 2012 - 62
In Broadcast - October 2012 - 63
In Broadcast - October 2012 - Take Control With Rascular’s Helm
In Broadcast - October 2012 - 65
In Broadcast - October 2012 - 66
In Broadcast - October 2012 - 67
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In Broadcast - October 2012 - S1
In Broadcast - October 2012 - S2
In Broadcast - October 2012 - S3
In Broadcast - October 2012 - S4
In Broadcast - October 2012 - S5
In Broadcast - October 2012 - S6
In Broadcast - October 2012 - S7
In Broadcast - October 2012 - S8
In Broadcast - October 2012 - S9
In Broadcast - October 2012 - S10
In Broadcast - October 2012 - S11
In Broadcast - October 2012 - S12
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