Post on 12-Jan-2016
transcript
Philips Softworks
CONFIDENTIAL
Opportunities in MHP & MPEG-4Presentation at ITU MediaCOM
14th March 2002
Paul BristowStrategic Technologist, Philips Softworks
paul.bristow@philips.com
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Basics of MHP
Public Standard for Interactive TV Integrates Internet Connectivity 3 profiles
Enhanced TV, Interactive TV, Internet TV Uses Java as its foundation TV Centric Same system for Satellite, Cable, Terrestrial Unified Global Content Covers end-to-end chain Secure, Open, Extensible Framework Scalable Architecture Only Proven Interoperable Solution
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Basics of MPEG-4
Standard for A/V delivery on Internet and Mobile Networks
Main features of MPEG-4 Visual (Video & Graphics) Optimized quality at low bit rates : 10K to 1Mbps Object oriented BIFS (graphics format) Robust and scalable
Main features of MPEG-4 Audio (Speech & Audio) Suite of audio coding Speech coding Synthetic audio, and speech
Efficient low bit rate coding Separate streams for audio, video, graphics, etc. Allows streaming by any transport layers (RTP, MPEG2-TS…)
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MPEG-4 Features (1)
MPEG-4 visual natural textures, still images, video
textures and still images wavelets, video DCT based synthetic objects
face and body animation at very low bitrates arbitrary shapes transparency plane, in addition to YUV planes high coding efficiency at low bitrates
obvious choice for streaming over Internet scalability
spatial, temporal, FGS
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MPEG-4 Features (2)
MPEG-4 Audio a range of codecs for speech and music high level of scalability seamless adaptation to varying bandwidth
MPEG-4 Graphics VRML based binary format for transport streaming of animations at a few kbit/sec
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MPEG-4 Features (3)
MPEG-4 Scenes MPEG-4 is about Objects ! Scenes define how to compose objects Dynamic composition
composition may vary in time and space Suitable for Personalized Services
user specific composition Efficient transport format
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Object-Based Coding
Object Oriented Free composition of graphics, and
video objects into scenes (overlays) Audio and video objects can be
independently manipulated Arbitrary shapes (binary or alpha
blended) BIFS : text, 2D, and 3D binary format separate front and background multiple foreground objects variable spatial placing of objects alpha shape to blend visual objects
Object-Based Coding MPEG-4 is a great vehicle for:
Interaction at the end user level Capturing user profile Adding value to the content
Object #1: Main Program(Newscast)
Object #3:Graphic Overlay
(Sponsor)
Object #4:Graphic Overlay(Stock Ticker)
Philips 40%SONY 25% Panasonic 12%Thomson 34% Gemstar 30%
Object #2:Graphic Overlay
(Station ID)
Philips 40%SONY 25% Panasonic 12%Thomson 34% Gemstar 30%
Composed Image
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Personalised Video
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“Buy the Ball” PPV
MPEG-2 Video Encoder
MPEG-4 Visual Encoder
MPEG-4 Scene Encoder
MPEG-4 object: ballMPEG-4 object: ball
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The Digital Home
The Internet
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EncodeOnce for Various Networks
Robust Resync markers Error recovery tools : data
partitioning, reversible variable length coding
Error resilience tools
Scalable Encode only once for multiple
devices and circumstances Users unaware of bitrate choice Enhancement layers to basic
quality object Low priority objects can be
dropped to save bits
Base Layer
Enhancement Layer
Availa
ble
Bandw
idth
(b
itra
te)
MPEG-4 EncodeOnc
e for all Networks
PC
STB
MOBILE
IPDelivery
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Potential MPEG-4 applications
Streaming over IP Enhanced broadcast Storage in Set Top Boxes Personalized services Scalable services Combining all of the above
single application format (very) rich multimedia applications
But …. Already many existing formats HTML, SMIL, MHP, etc. Business Model ?
Can easily fit into MHP JMF, life cycle, signalling is all there
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MPEG4 enabled MHP:Immersive Broadcast
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Vertical businesses in a horizontal market
Networks / Transport (MPEG-2 & IP)
Conditional Access(Service Providers)
Programmes & Services(Broadcasters, Web Sites)
Applications & Content(Producers/Distributors)
Receivers / Terminals(CE devices / PCs)
All competing for consumers
Operator 2 Operator 3Operator 1
Provider 1 Provider 3Provider 2
Operator 1 Operator 2
Supplier 1 Supplier 2 Supplier 4Supplier 3
Manuf. 4Manuf. 1 Manuf. 2 Manuf. 3
Operator 4
Operator 3 Operator 4
MHP Market Model Evolution
Operator 2 Operator 3Operator 1
Provider 1 Provider 3Provider 2
Operator 1 Operator 2
Supplier 1 Supplier 2 Supplier 4Supplier 3
Manuf. 4Manuf. 1 Manuf. 2 Manuf. 3
Operator 4
Operator 3 Operator 4
BottomUp
“Pull”Trad.Net
ConsumersConsumersChooseChoose
TopDown“Push”Trad.TV
BroadcastersPush
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Conclusion
MHP allows rich applications for iTV MPEG-4 allows rich media types, which MHP does not cover Putting the two together makes sense MPEG-4 solves many IP streaming issues More than just a video codec
Video Audio Speech Media Synthesis 2D graphics 3D graphics Scene composition
Finally, H26L is MPEG4 Level 10!
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Questions?
Ask now… Email me paul.bristow@philips.com or go to http://www.mhp.philips.com and http://www.mpeg-4.philips.com
Other useful web sites: DVB: http://www.dvb.org MHP: http://www.mhp.org MPEG : http://www.cselt.it/mpeg/ M4IF : http://www.m4if.org/ ISMA : http://www.isma.tv/ 3GPP : http://www.3gpp.org/