In Broadcast - March 2014 - 49


WWW.INBROADCAST.COM | ISSUE 29 - MARCH 2014

InGEAR

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

N E W S

See at NAB!
t
B
Booth #C8008
o
0

Let's Get Objective
About QoE Systems
By Simen K. Frostad
Chairman, Bridge Technologies

E

veryone knows the joke about
the tourist winding down his car
window and asking a local man
how to get to the coast. The local
scratches his head and says: "Well
I wouldn't start from here."
It's good advice for anyone
thinking about implementing
a Quality Of Experience (QoE)
monitoring system. QoE is deemed
to be an essential facet of a good
monitoring strategy for digital media
operators, but the conventional
approach to QoE for digital media
has some surprising origins.
Monitoring QoE first began in
the telecoms industry, when telcos
wanted to assess how phone users
felt about the sound they were
hearing. They assembled panels
of experts who evaluated the
aural quality, often by listening to
a selection of stock phrases such
as 'You will have to be very quiet',
'There was nothing to be seen', and
'They worshipped wooden idols'.
The experts recorded their scores,
assessing impairments on a scale
of one to five, from 'imperceptible'
to 'very annoying'.
The scores were then averaged
and weighted using statistical
manipulations common in the
social sciences and market research.
This methodology was called
MOS (Mean Opinion Score), and
specified by the ITU-T (International
Telegraph Union).
It certainly made sense to use this
subjective approach for telephony,
because the quality and intelligibility
of sound over a phone line is difficult
to evaluate using more precise

and objective measures. But as a
methodology for visual media and
digital media transmissions? Well,
you wouldn't start from here...
And yet, that is precisely where
most conventional QoE monitoring
solutions for digital media do start.
MOS may have been reinvented
as VideoMOS, and the evaluation
panel may have been robotised - so
now it's algorithms that attempt to
simulate the subjective reactions
of a range of 'typical' viewers - but
the methodology is still based on
the premise that subjectivity is
the key to QoE.
Subjectivity is subtle: a human
viewer watching a top-quality 1080i
transmission of the Superbowl,
followed on the same channel by
the 1940s B&W movie Casablanca
knows that the two pieces of
content cannot be judged by the
same criteria. Yet in a robotised QoE
assessment based on MOS criteria,
the Superbowl would score highly,
while Casablanca would be marked
way down for 'blurriness', scratches
and other artifacts, and for its lack
of resolution and colour. These are
spurious and misleading results,
making the data from this kind of
QoE system of questionable value
to the provider.
Fortunately there are plenty of
criteria inherent to digital media that
are readily evaluated in a completely
objective way: lost packets, timeouts,
buffering, and so on.
By basing QoE monitoring on
these, it's no longer necessary to
confect an algorithmic 'opinion'
about Quality Of Experience.

49

Make the Impossible
m
Production a Reality.
c
l
In broadcast, you face unforeseeable production
road
fores
n
challenges. Bu a robust intercom so
But
solution can
empower you to do the impossible. Imagine a
t
gine
system that reacts to your changing needs in
stem
ur
seconds. Exp
xpands to include reliable wireless
liab
connections, indoor or outdoors. And eve
doors
d even
exte
extends your intercom across the world,
acro
over IP or fiber.
P
4
With Eclipse HX matrix and Tempest®2400
matr
wireless system , all of this is now possible.
eless
his

www.clearcom.com
Copyright © 2014. Clear-Com, LLC. All rights reserved. ® Clear-Com, the Clear-Com logo, and Eclipse are registered trademarks of HM Electronics, Inc.
Tempest and Tempest logo are registered trademarks of CoachComm, LLC.

QoE board at IBC 2013


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://nab14.mapyourshow.com/5_0/exhibitor_details.cfm?exhid=170 http://www.bridgetech.tv/ http://www.clearcom.com

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

In Broadcast - March 2014
Contents
InNews: Eyevis Acquires Teracue
InNews: Columbus Crew Upgrades With Grass Valley
InPreview: Imt Rf Central Microlite Hd
InForm: Facilities Belong in the Cloud
InForm: Playbox: 15 Years & 14,000 Channels
InFile: Elemental Live - Accelerating Pay Tv Everywhere
InStudio: Voicewriters – Live Captioners
In Broadcast - March 2014 - Intro
In Broadcast - March 2014 - In Broadcast - March 2014
In Broadcast - March 2014 - Cover2
In Broadcast - March 2014 - Contents
In Broadcast - March 2014 - InNews: Eyevis Acquires Teracue
In Broadcast - March 2014 - 5
In Broadcast - March 2014 - InNews: Columbus Crew Upgrades With Grass Valley
In Broadcast - March 2014 - 7
In Broadcast - March 2014 - 8
In Broadcast - March 2014 - 9
In Broadcast - March 2014 - 10
In Broadcast - March 2014 - 11
In Broadcast - March 2014 - 12
In Broadcast - March 2014 - 13
In Broadcast - March 2014 - 14
In Broadcast - March 2014 - 15
In Broadcast - March 2014 - 16
In Broadcast - March 2014 - 17
In Broadcast - March 2014 - 18
In Broadcast - March 2014 - 19
In Broadcast - March 2014 - 20
In Broadcast - March 2014 - 21
In Broadcast - March 2014 - 22
In Broadcast - March 2014 - 23
In Broadcast - March 2014 - 24
In Broadcast - March 2014 - 25
In Broadcast - March 2014 - 26
In Broadcast - March 2014 - 27
In Broadcast - March 2014 - InPreview: Imt Rf Central Microlite Hd
In Broadcast - March 2014 - 29
In Broadcast - March 2014 - InForm: Facilities Belong in the Cloud
In Broadcast - March 2014 - 31
In Broadcast - March 2014 - InForm: Playbox: 15 Years & 14,000 Channels
In Broadcast - March 2014 - 33
In Broadcast - March 2014 - 34
In Broadcast - March 2014 - 35
In Broadcast - March 2014 - 36
In Broadcast - March 2014 - 37
In Broadcast - March 2014 - 38
In Broadcast - March 2014 - InFile: Elemental Live - Accelerating Pay Tv Everywhere
In Broadcast - March 2014 - 40
In Broadcast - March 2014 - 41
In Broadcast - March 2014 - 42
In Broadcast - March 2014 - 43
In Broadcast - March 2014 - 44
In Broadcast - March 2014 - 45
In Broadcast - March 2014 - InStudio: Voicewriters – Live Captioners
In Broadcast - March 2014 - 47
In Broadcast - March 2014 - 48
In Broadcast - March 2014 - 49
In Broadcast - March 2014 - 50
In Broadcast - March 2014 - 51
In Broadcast - March 2014 - 52
In Broadcast - March 2014 - 53
In Broadcast - March 2014 - 54
In Broadcast - March 2014 - 55
In Broadcast - March 2014 - 56
In Broadcast - March 2014 - 57
In Broadcast - March 2014 - 58
In Broadcast - March 2014 - 59
In Broadcast - March 2014 - 60
In Broadcast - March 2014 - 61
In Broadcast - March 2014 - 62
In Broadcast - March 2014 - 63
In Broadcast - March 2014 - 64
In Broadcast - March 2014 - 65
In Broadcast - March 2014 - 66
In Broadcast - March 2014 - 67
In Broadcast - March 2014 - 68
In Broadcast - March 2014 - 69
In Broadcast - March 2014 - 70
In Broadcast - March 2014 - 71
In Broadcast - March 2014 - 72
In Broadcast - March 2014 - 73
In Broadcast - March 2014 - 74
In Broadcast - March 2014 - 75
In Broadcast - March 2014 - 76
In Broadcast - March 2014 - 77
In Broadcast - March 2014 - 78
In Broadcast - March 2014 - 79
In Broadcast - March 2014 - 80
In Broadcast - March 2014 - 81
In Broadcast - March 2014 - 82
In Broadcast - March 2014 - 83
In Broadcast - March 2014 - S1
In Broadcast - March 2014 - S2
In Broadcast - March 2014 - S3
In Broadcast - March 2014 - S4
In Broadcast - March 2014 - S5
In Broadcast - March 2014 - S6
In Broadcast - March 2014 - S7
In Broadcast - March 2014 - S8
In Broadcast - March 2014 - S9
In Broadcast - March 2014 - S10
In Broadcast - March 2014 - S11
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_NewYork2019
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201910
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201909
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_inshowguide2019
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201908
http://europe.nxtbook.com/nxteu/lesommet/CTA-DAY3
http://europe.nxtbook.com/nxteu/lesommet/CTA-DAY2
http://europe.nxtbook.com/nxteu/lesommet/CTA-DAY1
http://europe.nxtbook.com/nxteu/lesommet/CTA-VISITOR
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201906
http://europe.nxtbook.com/nxteu/lesommet/CTA-PREVIEW
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201905
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201904
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_NABSHOW2019
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201903
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_cabsat2019
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201902
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201901
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_INREVIEW2018
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201812
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201811
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_NewYork2018
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201810
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_inshowguide2018
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201809
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201808
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201806
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201805
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201804
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_NABSHOW2018
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201803
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201802
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_cabsat2018
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
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201601
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
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201508
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201507
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201506
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_BROADCASTASIA2015
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201505
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
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201501
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201412
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201411
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201410
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201409
http://europe.nxtbook.com/nxteu/lesommet/inbroadcastIBCPRINTEDGUIDE_201409
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201408
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201407
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201406
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201405
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201404
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201403
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201402
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201401
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201312
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201311
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201310
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201309
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201308
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201307
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201306
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201305
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201304
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201303
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201302
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201301
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201211
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201210
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201209
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201208
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201207
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201206
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201205
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201204
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201203
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201202
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_20121201
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_20111011
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_20110708
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_20110506
http://www.nxtbookMEDIA.com