chapter 6 digital television. distribution local terrestrial dtv / 4k / uhd ota: over the air oculus...
TRANSCRIPT
Chapter 6
Digital Television
Distribution
Local terrestrial DTV / 4K / UHD OTA: over the air
Oculus Rift example – HMD OTT – over the top television
non-broadcast, Internet-streamed video content viewed on a digital display
What is the line between broadcast/cable/DBS-delivered “linear” television and that of on-demand streamed content
We had this discussion as we started video
Digital Distribution
All-encompassing term: Internet-Delivered Television or I-DTV.
The use of this meta-term would include current things called OTT, Connected, and IPTV streamed programming
Digital Distribution Displays are also changing.
Screen size LCD, LED, OLED, (plasma), DLP Consider a 4K TV if you want your TV to be
acceptable five years from now. OLED TVs look much better than a typical
LED/LCD, but they are very expensive. Curved TVs are a fashion statement. They don’t
benefit image quality. “smart” televisions now common
Chap 6—History & Development Evolution of digital OTA TV Today: HD vs. multicasting
Network & syndication deals Extra channels: HD or SD Local market stations and local programming vs.
national
Local creation and distribution…
Do we need local OTA signals?
Two primary areas affecting the diffusion of digital television and video in the United States— An ongoing battle over the digital television
spectrum between broadcasters, regulators, and mobile telecommunication providers—and
the diffusion of new digital technologies such as 4K-resolution DTV, mobile DTV, thin-screen displays such as OLED, and the advent of smart televisions.
Communication Technology
RTV 151
Multichannel TV ServicesAnd
Streaming Media
MVPD
Multichannel Video Program Distributors Cable, DBS, IPTV SMATV, MMDS, TVRO (see earlier chapter) Pay TV
PPV, VOD, NVOD
Cable TV
Started late 1940s Growth began in 1970s (HBO) Tree and branch architecture
Headend Reception from -- , conversion, channel assignment
Trunk Line Feeder lines Drop lines Backfeed lines amplifiers
Local geographic areas - but MSOs
Some Cable TV issues
A la carte Must carry Franchising / IPTV -- statewide -- FCC Digital cable Telephony (VoIP) -- Skype, Vonage, Google Voice... High speed internet (slow down issue) Coax / copper wires / hybrid / all fiber Multicasting DTV channels
DBS issues
Location of satellites (dishpointer) Location of uplink facilities
DirecTV: Castle Rock, CO DISH: Cheyenne, WY
Local into local HD roll-out -- MPEG-4 AVC Satellites
Launching / How launched video / multiple dishes HD locals
HD bandwidth problem Ultra HD program production and distribution For cable, satellite … any distributor:
bandwidth High-Efficiency Video Coding (HEVC) uses
advanced compression algorithms in a new global H.265 DTV standard adopted in January of 2013 by the International Telecommunications Union. It superseded their H.264 AVC standard and uses half the bit rate of MPEG-4
Handling 4K One of the things holding 4K back has been a
lack of programming and content. Netflix got the ball rolling earlier this year by
streaming of House of Cards and other original series in 4K
DirecTV started development for providing 4K video on demand last year.
“Currently, 4K is being streamed in H.265/HEVC BT.709 color gamut, 4:2:0 color subsampling, and 8-bit dynamic range.”
Handling 4K But current advancements and standards
committees also looking at an ultra high definition spec of 10-bit color and…
Google has a competing VP9 UHD codec. StreamingMedia.com article
IPTV issues
Service locations / regulations FiOS vs. U-verse IPTV vs. cable vs. DBS vs. --- Internet
broadband 2-way benefits vs. other MVPDs Bundles -- benefits?
The Aereo Controversy
Aereo, a U.S. company founded in 2012, was a unique Over-The-Top MVPD service designed to ‘provide a remote, over-the-air antenna to each subscriber.’
What about it… ?
Streaming Media
UStream Netflix, Hulu, Pandora, iHeart, etc. Live radio stations and live ‘TV stations’
Copyright issues (who owns what?) Original site or extra distribution outlet?
Roku, Apple TV ‘you’ll need somebody to log in from their cable’ Siri demo, Google Now OK Google demo And do you need a thingcharger?
Established streaming platforms
Microsoft / Windows Media Player RealPlayer / RealProducer as encoder Apple QuickTime Apple iTunes Streaming sites
Livestream Ustream
Also... Macromedia/Flash -- technically a plug-in
Podcasting, etc.
RSS - really simple syndication ; not live streaming EV-DO -- Verizon’s Evolution Data Only Network --
‘V-cast’ wireless mobile video service (or ‘optimized)
Compare to mobile TV? (mDTV)
DVB example FiOS TV -- Verizon’s fiber optic to the home service
that offers broadband Internet, IPTV and phone service
AT&T’s U-verse IPTV service
Other terms and ideas…
Streaming architecture -- handles and synchronizes digital files: QuickTime, Flash…
Codec -- compression/decompression: a compression algorithm (or coder - decoder) A codec (the program) is not the coding or compression
format or standard – a format is the standard, a way of storing data; The codec is the program used to read or write such files.
ISMA / interoperability -- Internet Streaming Media Alliance
Other interactive TV issues
Streaming players: (comparison) Apple TV Roku Google TV Boxee
Sling Player / Sling box (‘TV anywhere’) UGC / licensing content and channels
Social issues
Who is using what type media? Teen and younger use of and access to
Predators? Subversion of parental roles? (webcams, online videos, social impact)
Loss of public service journalism Mobile media, new narrative conventions University and business training -- podcasts,
streams, online training and education