DCN November 2016 - Page 32

video latency

CCTV cameras are now part of our everyday life and many are connected to the Internet .
‘ restricted to the play out services He explains that if you put 512 byte companies may provide to consumers block of data on a 1Gbs network with or internal personnel through training 20ms of latency , it would still take videos and the like but also video 20ms to the other end and then be production companies .’ acknowledged . He says this leads
There are many advertising to no performance gain , but it does companies shooting generic video , lead to a ten-fold drop in utilisation . then localising it in the various regions ‘ You have increased your costs and around the world . Trossell explains , not improved your user experience ,’ ‘ Moving these high quality large he underlines . Data centres therefore videos files around is becoming a need to assist their customers major issue because of the effects of by using methods that increase latency over the WAN . Many of the bandwidth utilisation , as this in turn WANs also compound the problem increases performance and makes for with packet loss , which magnifies the a better user experience by mitigating issue by several orders .’ the impact that latency has on it .
Increase bandwidth ? IoT : Data storage So , should data centres and
Let ’ s also not forget that we ’ re now their customers up their network in an Internet of Things world , which connectivity ’ s bandwidth ? means that video is more than ever Unfortunately that often doesn ’ t used for more applications . ‘ CCTV sufficiently mitigate latency , as cameras are part of our everyday life Trossell explains , ‘ When faced now and many are now connected with poor performance , the typical to the Internet ,’ says Trossell . He response is to increase the WAN rightly says that many people see bandwidth , and so this very rarely them as an invasion of their privacy , increases the WAN performance .’ but there are many others who also see them as an important security tool in a troubled world , with the key benefit of helping police forces to fight against crime .
‘ One large supermarket pays out over 12 million pounds a year in what they call “ slip and trip ” claims and each store has a myriad of cameras covering every point in each store , but the problem is about storing all of this data from all these cameras ,’ he explains . The supermarket found it hard to store this data locally , and he says that it found that ‘ transporting the data over long distance to a central data store could not be achieved every night without considerable loss of evidence .’ He therefore claims that if the effects of latency are mitigated , then each store could upload this video data into a private cloud every night while allowing the client to search for the footage online .
Adopt new approaches The trouble is that latency , as Trossell says , is a fact of life : the only way to reduce it is to move the points closer together . ‘ Purchasing low latency networks can improve the situation but the additional high cost normally outweighs the benefit ,’ he claims . But , he warns that latency and packet loss are the two biggest killers of WAN performance . When they come together , your network will suffer from a massive hit in its performance capability . So what ’ s the answer ? In his view , data centres should be considering a new approach and new solutions , which use machine intelligence to accelerate data and to mitigate latency and reduce packet loss . With new approaches to an old problem , and new solutions , data centres can support the growing volumes of video data .
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