ip based media services

IP MEDIA SERVICES

VINAYAGAM M

DIRECTOR

eSILICON LABS, INDIA

eSILICON LABS 2015 1

Media Services

IPTV

OTT

Netflix

CDN

ABR

Agenda

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Media Services

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• Terrestrial TV

• Satellite TV

• Cable TV

• Mobile TV

• IPTV

Traditional Media Services

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Media Services Trends

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• Interactive TV

• Video on demand (VOD)

• Time shifted− Catch-up TV (replays a TV show that was broadcast hours or days ago)

− Start-over TV(replays the current TV show from its beginning)

IPTV

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• Content: the media (video, audio)

• Video Head end: converts the content into suitable format, e.g. MPEG2, MPEG4

• Service Provider IP Network: the backbone network of the service provider (ormultiple service providers).

• Service Provider Access Network: often called the “last mile” to the users premise(house, office). Technologies such as ADSL, FTTH and Ethernet

• Home Network: set-top-box, TV’s, PCs, Smart TV, game consoles and etc…)

VideoHeadend

Content Service Provider IP Network

Service Provider Access Network

Home Network

IPTV Network Elements

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• Broadcast

• Unicast

• Multicast

IP Media Transfer

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• Broadcast (send to everyone)− Mainly used for TV guide distribution, and informational updates

• Unicast (send to individual)− video-on-demand of specialise content− Unicast allows an individual to view content whenever desired,

but is expensive (in terms of network overhead)

• Multicast (send to group of users)− Main form of delivery, especially for popular content− Users select a channel/content (equivalent of joining multicast

group), and that is efficiently delivered to all users− Even used for video-on-demand (even for specialised content,

likely there will be multiple users wanting to watch at the sametime)

IPTV Delivery

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• Delivery of audio, video, and other media over the Internet without theinvolvement of a multiple-system operator

• The Internet provider may be aware of the contents of the InternetProtocol packets but is not responsible for, nor able to control, the viewingabilities, copyrights, and/or other redistribution of the content.

OTT (Over The Top)

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• Easy to get confused OTT with IPTV, but the key difference is that IPTV is providedover managed networks.

• IPTV networks fully manage and control the traffic, delay and bandwidthcharacteristics, so as to guarantee a predictable viewer experience.

• OTT in particular refers to content that arrives from a third party – such as Netflix,Hulu, Amazon, YouTube and is delivered to an end-user device, leaving the ISPonly the role of transporting IP packets.

OTT vs IPTV


$7.99 per month

$8.39 per month

OTT Service Providers


NETFLIX


• Netflix pokes fun at Amazon with explosive new drone-delivery video

• Amazon Prime Air is a conceptual drone-based delivery system currently indevelopment by

NETFLIX


• The company was established in 1997 and is headquartered in California andstarted its subscription-based service in 1999.

• Netflix grew as DVD sales fell from 2006 to 2011

• By 2009, Netflix was offering a collection of 100,000 titles on DVD and hadsurpassed 10 million subscribers.

• On February 25, 2007, Netflix delivered its billionth DVD.

• As of October 2015, Netflix reported 69.17 million subscribers worldwide,including more than 43 million in the U.S.

NETFLIX


• While numerous companies throughout the world have started OTT services, itcan be argued that Netflix of the United States is the most successful.

• Originally, DVD rental-via-mail business

• Netflix online allows you to watch as many videos as you want for a flat monthlyrate – all conveniently streamed directly to your home. Initially only viewable ona PC-based player, Netflix now supports direct playback on a wide variety ofdevices including game consoles, mobile devices and Internet connected TV sets.

NETFLIX


NETFLIX


HOW IT WORKS?

• simply, it is a web server.

• Viewing devices use the exact same technologies and protocols as any standard website.

• As with accessing any web page, the client device uses the HTTP GET command to retrieve a file from a particularweb server. The host to access and the specific file asset are identified by the familiar URL

• http://euronews.com/sport

NETFLIX


NETFLIX

Delivering Methods

- Fixed rate – early streaming system

- Chunks: TV contents divided into multiple

segments.(actual size of chunks is

dependent on the bit rate encoding)

- Screen size, bit-rate, internet connection

etc. will be handles


CDN (Contents Delivery Network)

- Players network is divided into Contents Providers and Service Providers

CDN


Cache server / Origin server

- Sometimes many cache servers are needed.

Once content is requested by a client, the network first checks if it is available in a cache server, and if not,

the content is then pulled in from the origin server to the cache.

CDN


Sample protocol files (Manifest files)

- Manifest files are divided into several files.

- Master file has the list of bit files

CDN


CDN

Sample protocol files (Manifest files)

- The master file lists the bit rates available for a particular movie. Each bit rate is

linked to another manifest, which lists in sequence, the URLs of each file chunk for

that bit rate.

- To date, the format of the manifest file and detailed adaptive bit rate mechanisms

have been vendor specific.


TCP (Transmission Control Protocol) based system

- IP network (data transmission): UDP system and TCP system

- UDP is good for Multicasting (IPTV is using this).

CDN


Multi-rate Encoding system

- Latest = Adaptive Bit Rate Network.

- Different Devices use different bit-rates

Adaptive Bitrate Control


• Detecting a user's bandwidth and CPU capacity in real time andadjusting the quality of a video stream accordingly

• Requires the use of an encoder which can encode a single sourcevideo at multiple bit rates

• The player client switches between streaming the different encodingsdepending on available resources

• The result: very little buffering, fast start time and a good experiencefor both high-end and low-end connections

Adaptive Bitrate Streaming


• Multi-screen services are based on ABR and video streaming over HTTP.

• HLS - from Apple (HTTP Live Streaming)

• HSS - from Microsoft (HTTP Smooth Streaming)

• HDS - from Adobe (HTTP Dynamic Streaming)

• MPEG-DASH from MPEG.

ABR (Adaptive Bitrate) Technologies


• HLS stands for HTTP Live Streaming and is Apple’s proprietarystreaming format based on MPEG2-TS. It’s popular since it provides theonly way to deliver advanced streaming to iOS devices.

• HDS stands for HTTP Dynamic Streaming and is Adobe’s format todeliver fragmented mp4 files (fMP4). HLS uses MPEG-2 Part 1, whileHDS uses MPEG-4 Part 14 and Part 12.

• MPEG-DASH. MPEG, the standards body responsible for MPEG-2 and MPEG-4, isaddressing dynamic adaptive streaming over HTTP (MPEG-DASH) through theuse of four key profiles—two around CFF for fMP4 and two for MPEG-2 TS.



Recommended Bit-rates and Network Speed- Codec used: initially VC-1 for video and WMA

for audio, now H.264 (AVC), VC-1, H.263 andH.265 (HEVC) for video, and Dolby Digital,Dolby Digital Plus, AAC and Ogg Vorbis foraudio.

- According to Netflix, encode the same title 120different times before it can be delivered.

- Netflix uses adaptive bitrate streamingtechnology to adjust the video and audioquality to match a customer’s broadbandconnection speed and real-time networkconditions.

Quality Required download speed

Minimum (low) 1.5Mbit/s

DVD quality (480p) 3Mbit/s

HD (720p) 5Mbit/s

Super HD (1080p) 7Mbit/s

3D Streaming 12Mbit/s

4K UHD (2160p) 25Mbit/s



http://en.wikipedia.org/wiki/Windows_Media_Audio

http://en.wikipedia.org/wiki/H.264

http://en.wikipedia.org/wiki/VC-1

http://en.wikipedia.org/wiki/H.263

http://en.wikipedia.org/wiki/High_Efficiency_Video_Coding

http://en.wikipedia.org/wiki/Dolby_Digital

http://en.wikipedia.org/wiki/Dolby_Digital_Plus

http://en.wikipedia.org/wiki/Advanced_Audio_Coding

http://en.wikipedia.org/wiki/Ogg_Vorbis

http://en.wikipedia.org/wiki/Adaptive_bitrate_streaming

http://en.wikipedia.org/wiki/480p



http://en.wikipedia.org/wiki/3D_television


Future Media Services


THANK YOU


ip based media services

Technology