In Broadcast - December 2011/January 2012 - 92

WWW.INBROADCAST.COM | DECEMBER 2011/JANUARY 2012

InFILE Transcoding: Getting There Faster
By John Pallett, Telestream Director of Product Marketing
The ongoing extension of digital video into new realms has brought with it a proliferation of specialised c o m p re s s i o n / d e c o m p re s s i o n algorithms (codecs), some used for content acquisition, others for editing and post-production, still others for storage and archiving, and still more for delivery to viewers on everything from big-screen TVs to mobile devices. Because content is increasingly used in a multitude of settings, it is become ever more important to be able to move it efficiently from one digital format to another without degrading its quality. Simply put, that is the purpose of transcoding. Transcoding allows programs to be converted from codec to codec faster than realtime using standard IT hardware rather than more costly video routers and switches. And it facilitates automation because it avoids manual steps such as routing signal or transporting storage media. Intelligently implemented and managed, transcoding vastly improves throughput while preserving quality. In many cases transcoding is required between file formats because of the codecs they support and the amount of compression applied to elementary video and audio streams. Those factors are determined by the purposes for which various codecs are defined, which, for video, fall into the following general categories: • Editing applications typically use formats (eg DV, Apple ProRes, Avid DNxHD, Sony IMX) that involve only intra-frame compression, resulting in video streams comprised entirely of I-frames, which can each be decompressed independently. The quality of the source is maintained and the material is easy to seek and edit on individual frames, but resulting bitrates are high. • Archiving applications also require high quality, such as JPEG 2000 or DV video elementary streams within a QuickTime or AVI container. But reducing storage requirements is often a higher priority than maintaining independent access to every frame, so inter-frame compression may be applied, typically using long-GOP (15frame) formats such as MXFwrapped MPEG-2 at 36 Mbps or higher.
John Pallett

92

• Broadcast server formats are designed for use with proprietary systems, such as the Grass Valley K2, Omneon Media Stream, or Harris Nexio, that serve as the source from which stations pull programme for the feed to the broadcast transmitter or cable signal distribution system. Suitability for editing is not a requirement, so video compression is typically longGOP MPEG-2 and increasingly H.264. • Distribution is a diverse category covering everything from CableLabs MPEG-2 transport streams for video on demand (VOD) to adaptive streaming formats (Apple HLS, Microsoft Smooth Streaming, Adobe HDS) for “new media” distribution via desktop or mobile device. A single container may include streams of different bitrates and resolutions. H.264 is a common video codec for this application. • Proxy formats are small, highlycompressed stand-ins for full-quality source files, used by stock footage libraries for online viewing and by editors when finding takes outside of an editing suite. Since the priority is to make the files small, proxies typically use lossy inter-frame video compression. The need for efficient media exchange between these diverse types of formats is clear. Transcoding bridges the gaps between production,
CONTINUED ON PAGE 93

MERlin DVB-T2 and DVB-T terrestrial monitoring receiver

• DVB-T2 & DVB-T terrestrial COFDM to DVB-ASI • SNMP interface • Web browser A 1RU self-contained terrestrial receiver for continuous off-air reception and monitoring of DVB-T2 and DVB-T. The unit monitors key parameters such as MER and LDPC and includes programmable templates to compare the received RF with the expected signal. MERlin is extremely cost effective enabling wide scale deployment.

www.dbbroadcast.co.uk

T +44 (0)1353 661117


http://itunes.apple.com/gb/app/inbroadcast/id468652679?mt=8 http://www.linkedin.com/home?trk=hb_tab_home_top http://www.twitter.com/inbroadcast http://www.youtube.com/watch?v=qpzEatLsHdE&feature=youtube_gdata_player http://www.facebook.com/pages/InBroadcast-e-zine/226166444076212 http://WWW.INBROADCAST.COM http://www.truelens.co.uk http://www.truelens.co.uk http://www.dbbroadcast.co.uk http://www.dbbroadcast.co.uk

In Broadcast - December 2011/January 2012

Table of Contents for the Digital Edition of In Broadcast - December 2011/January 2012

In Broadcast - December 2011/January 2012
Content
Immortal Images: Nuoda & Film Factory
Film Tails Out
IABM Report Revieals New Insights
Masstech Emerald 7.5 LE Preserves Vital Assets
Sneak Peek
Robotics in the Newsroom
Sislive America's World Cup
Expo World Travel Comments on Services
Transcoding: Getting There Faster
In Broadcast - December 2011/January 2012 - In Broadcast - December 2011/January 2012
In Broadcast - December 2011/January 2012 - 2
In Broadcast - December 2011/January 2012 - Content
In Broadcast - December 2011/January 2012 - Immortal Images: Nuoda & Film Factory
In Broadcast - December 2011/January 2012 - 5
In Broadcast - December 2011/January 2012 - 6
In Broadcast - December 2011/January 2012 - 7
In Broadcast - December 2011/January 2012 - 8
In Broadcast - December 2011/January 2012 - 9
In Broadcast - December 2011/January 2012 - 10
In Broadcast - December 2011/January 2012 - 11
In Broadcast - December 2011/January 2012 - 12
In Broadcast - December 2011/January 2012 - 13
In Broadcast - December 2011/January 2012 - 14
In Broadcast - December 2011/January 2012 - 15
In Broadcast - December 2011/January 2012 - 16
In Broadcast - December 2011/January 2012 - 17
In Broadcast - December 2011/January 2012 - 18
In Broadcast - December 2011/January 2012 - 19
In Broadcast - December 2011/January 2012 - Film Tails Out
In Broadcast - December 2011/January 2012 - IABM Report Revieals New Insights
In Broadcast - December 2011/January 2012 - 22
In Broadcast - December 2011/January 2012 - 23
In Broadcast - December 2011/January 2012 - 24
In Broadcast - December 2011/January 2012 - 25
In Broadcast - December 2011/January 2012 - 26
In Broadcast - December 2011/January 2012 - Masstech Emerald 7.5 LE Preserves Vital Assets
In Broadcast - December 2011/January 2012 - Sneak Peek
In Broadcast - December 2011/January 2012 - 29
In Broadcast - December 2011/January 2012 - 30
In Broadcast - December 2011/January 2012 - 31
In Broadcast - December 2011/January 2012 - 32
In Broadcast - December 2011/January 2012 - 33
In Broadcast - December 2011/January 2012 - 34
In Broadcast - December 2011/January 2012 - 35
In Broadcast - December 2011/January 2012 - 36
In Broadcast - December 2011/January 2012 - 37
In Broadcast - December 2011/January 2012 - 38
In Broadcast - December 2011/January 2012 - 39
In Broadcast - December 2011/January 2012 - 40
In Broadcast - December 2011/January 2012 - 41
In Broadcast - December 2011/January 2012 - 42
In Broadcast - December 2011/January 2012 - 43
In Broadcast - December 2011/January 2012 - 44
In Broadcast - December 2011/January 2012 - 45
In Broadcast - December 2011/January 2012 - 46
In Broadcast - December 2011/January 2012 - 47
In Broadcast - December 2011/January 2012 - 48
In Broadcast - December 2011/January 2012 - 49
In Broadcast - December 2011/January 2012 - 50
In Broadcast - December 2011/January 2012 - 51
In Broadcast - December 2011/January 2012 - 52
In Broadcast - December 2011/January 2012 - 53
In Broadcast - December 2011/January 2012 - 54
In Broadcast - December 2011/January 2012 - Robotics in the Newsroom
In Broadcast - December 2011/January 2012 - 56
In Broadcast - December 2011/January 2012 - 57
In Broadcast - December 2011/January 2012 - 58
In Broadcast - December 2011/January 2012 - 59
In Broadcast - December 2011/January 2012 - 60
In Broadcast - December 2011/January 2012 - 61
In Broadcast - December 2011/January 2012 - 62
In Broadcast - December 2011/January 2012 - 63
In Broadcast - December 2011/January 2012 - 64
In Broadcast - December 2011/January 2012 - 65
In Broadcast - December 2011/January 2012 - 66
In Broadcast - December 2011/January 2012 - 67
In Broadcast - December 2011/January 2012 - Sislive America's World Cup
In Broadcast - December 2011/January 2012 - 69
In Broadcast - December 2011/January 2012 - 70
In Broadcast - December 2011/January 2012 - 71
In Broadcast - December 2011/January 2012 - 72
In Broadcast - December 2011/January 2012 - 73
In Broadcast - December 2011/January 2012 - Expo World Travel Comments on Services
In Broadcast - December 2011/January 2012 - 75
In Broadcast - December 2011/January 2012 - 76
In Broadcast - December 2011/January 2012 - 77
In Broadcast - December 2011/January 2012 - 78
In Broadcast - December 2011/January 2012 - 79
In Broadcast - December 2011/January 2012 - 80
In Broadcast - December 2011/January 2012 - 81
In Broadcast - December 2011/January 2012 - 82
In Broadcast - December 2011/January 2012 - 83
In Broadcast - December 2011/January 2012 - 84
In Broadcast - December 2011/January 2012 - 85
In Broadcast - December 2011/January 2012 - 86
In Broadcast - December 2011/January 2012 - 87
In Broadcast - December 2011/January 2012 - 88
In Broadcast - December 2011/January 2012 - 89
In Broadcast - December 2011/January 2012 - 90
In Broadcast - December 2011/January 2012 - 91
In Broadcast - December 2011/January 2012 - Transcoding: Getting There Faster
In Broadcast - December 2011/January 2012 - 93
In Broadcast - December 2011/January 2012 - 94
In Broadcast - December 2011/January 2012 - 95
In Broadcast - December 2011/January 2012 - 96
In Broadcast - December 2011/January 2012 - 97
In Broadcast - December 2011/January 2012 - 98
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202403
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202402
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202401
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202312
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202311
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202310
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202309
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202308
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202307
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202306
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202305
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202304
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202303
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202302
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202301
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202212
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202211
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202210
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202209
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202208
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202207
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202206
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202205
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202204
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202203
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202202
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202201
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202112
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202111
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202110
https://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202109
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202108
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202107
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202106
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202105
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_PTZ
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202104
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202103
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202102
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202101
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202012
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202011
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202010
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202009
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202008
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202007
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202006
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202005
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202004
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202003
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202002
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_202001
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_INREVIEW2019
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201912
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201911
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
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_201611
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_NABSHOWNYexpo
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_20110708_DEMO
https://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
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_201602
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201601
https://www.nxtbook.com/nxtbooks/lesommet/inbroadcast_APAC02
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_201512
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_201511
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_CCW15expo
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_201510
https://www.nxtbook.com/nxtbooks/lesommet/inbroadcast_APAC01
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_201509
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_IBC2015
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_201508
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_201507
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_201506
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_BROADCASTASIA2015
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_201505
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_201504
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_NABSHOW2015
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_201503
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_cabsat2015
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_201502
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_201501
https://www.nxtbook.com/nxteu/lesommet/inbroadcast_201412
https://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
https://www.nxtbookmedia.com