Delivering More Video Content at Half the Cost Using MPEG-4 AVC Bob Wilson Chairman & CEO .

Delivering More Video Content at Half the Cost Using MPEG-4 AVC

Bob WilsonChairman & CEO

www.modulusvideo.com

AVC Finally Delivers on the Technical Vision First Described in 1954 by RAND

Corporation!

Modulus Video Copyright


Modulus Video

• Real-time SD & HD “broadcast quality” encoders and decoders

• Powerful AVC platform

– Software centric encoding

– CPU’s and FPGA’s accelerate to real-time

• SD systems shipping now!

• HD systems 1st half 2005

• VC backed company founded by broadcast industry veterans


Video Compression is Mainstream!


AVC’s Impact on Content

• Less cost = more content• MPEG-4 AVC: the future for all consumer systems

– HD DVD’s & Blu-ray DVD’s– HD camcorders– Mobile video & cell phones

• Apple has already announced support for AVC in their Final Cut Pro professional editing solutions

AVC is the next generation encoding standard for content creation & delivery


A New Standard Arrives – MPEG-4 AVC!

MPEG-4 AVC Advanced Video Coding

• New worldwide standard approved in May 2003

• Delivering full resolution video at half the bit rate of

MPEG-2

• Hundreds of companies now working to deliver

practical solutions from “beginners to broadcasters”

• Both new HD DVD & Blu Ray formats utilize AVCISO/MPEG

ITU-T (VCEG)

Joint Video Team MPEG-4 AVC


Performance - AVC is on a Steep Improvement Curve• Near term - 50% less bit rate for many sequences• Benefits greatest for many sequences that are tough

for MPEG-2• Efficiency will continue to improve

0

0.5

1

1.5

2

2.5

3

2H200

4

1H200

5

2H200

5

1H200

6

2H200

6

1H200

7

Mbp

s

High End MPEG-2

Modulus AVCCBR Video Bit Rates


Evolution not Revolution• No fractals, wavelet or object coding • Block based processing• Familiar GOP Picture structure

– I- Intra coded pictures interleaved with P and B pictures– P- Forward motion predicted pictures– B- Bi directional motion predicted pictures

• Same rules apply – Familiar compression artifacts – Benefits from Statistical multiplexing and noise

reduction

I B B B P B B B P B B B

AVC Retains Familiar Picture Structure


Enhanced Toolset Delivers Efficiency

• Substantially better motion prediction

• Better intra prediction modes

• New entropy encoding technology

• In loop de-blocking filter

• New integer transform

• New quantization mechanisms

Temporal (motion)

and spatial prediction

Transform Quantization Entropy

Coding

Inverse

Transform

Inverse

Quantization

De-blocking

Filter

10X More Computational Complexity!


Enhanced Motion Prediction Modes

• ¼ pixel prediction doubles the accuracy• Hierarchical block size options track objects more

accurately• More references combinations• Weighted prediction helps convey fades and dissolve• MBAFF – Macro block adaptive field frame coding

Temporal (motion)



Coding

Inverse

Transform

Inverse

Quantization

De-blocking

Filter


Enhanced Entropy Coding • Entropy coding removes statistical redundancy from bit

stream • Fully defined loss less codec• Similar to ZIP application• AVC offers two advanced option

– Context Adaptive Variable Length Code (CAVLC)– Context Adaptive Binary Arithmetic Coding (CABAC)

• CABAC is very complex but powerful – Delivers around 15% efficiency gain

Temporal (motion)



Coding

Inverse

Transform

Inverse

Quantization

De-blocking

Filter


New Transforms and Quantization

• AVC has new 4x4 transform– Converts pixel array into string of coefficients– Coefficient string can be quantized to control bit rate

• Addresses inaccuracies that exist with MPEG-2• Ease of processing • Enhanced quantization tools

Temporal (motion)



Coding

Inverse

Transform

Inverse

Quantization

De-blocking

Filter


Smaller blocks

good for tracking

detail Large blocks

good for flat areas

4 x 4

8 x 4

8 x 8

4 x 8

16 x 16

16 x 16One New Tool: Adaptive Block Sizing

• MPEG-2 used large 16x16 blocks– Good for large objects– Not so good for tracking small objects

• AVC offers hierarchical block sizing– Adaptive block sizes

• Benefit is motion objects tracked accurately– Less residual error

More Tools, More Processing, but Fewer

Bits


New De-Blocking Filter

• NEW - MPEG-2 does not have this feature• Aggressive encoding will tend to result in block

artifacts• Block edges are processed- smoothed • Up to 3 pixels either side of block to reduce the

visible impact

Temporal (motion)



Coding

Inverse

Transform

Inverse

Quantization

De-blocking

Filter


AVC Compression = Broadcast Quality @1.5 Mbps

• Standard defines Decoder– Many low cost chips available this year

• AVC enables dramatic expansion of low cost video distribution– More channels at lower cost– New channels such as IPTV by Telcos

Remove temporal

redundancy

Transform and

quantize Entropy

reduction

Remove spatial

redundancy

Standardized

Decoder

Model

Tightly defined bit

Stream Syntax

Encoding Process Standardized Bit Stream and

Decoding Process


AVC Gets Better!Fidelity Rate EXTensions (FRExt)

• Extension approved in July 2004• Enhanced modes for SD and HD• 4:2:2, 4:4:4 chroma modes• Enhanced quantization

• Benefit - extend support to wider range of applications

Profile Name Maximum Chroma Format Maximum Sample Precision

"High" (HP) 4:2:0 8 bits

"High 10" (Hi10P) 4:2:0 10 bits

"High 4:2:2" (Hi422) 4:2:2 10 bits

"High 4:4:4" (Hi444) 4:4:4 12 bits


AVC Deployment Scenarios

• AVC complexity - incompatible with MPEG-2 receivers– Hence MPEG-2 will be around for years

• AVC will increasingly erode MPEG-2 market share

– Especially for HD & new applications (mobile video)

• Increasing use of IP networks for TV– Telco triple play– Professional point to point– Enterprise video– Homeland security

AVC

Encoder

IP Network

Tx Gateway

AVC

Decoder

IP Network

Rx GatewayWWW

IP NETWORK GATEWAYS

Protect from Network Anomalies

• Jitter

• Packet loss

• Packet re-ordering

• Delay


High Definition = 6x more Information AVC = Practical HDTV

• HD is exploding– More content being created– Receivers becoming

affordable – Service operators are

promoting it– A must have service for

many applications• HD is very bandwidth intensive

– Big benefits using AVC


Summary: AVC is Happening!

• AVC brings compelling performance benefits+ Enables new applications and economic models+ Open standards key for the industry growth+ AVC SD real-time solutions available now

+ AVC HD Available in 2005

= More Content @ Lower Cost

AVC as a Disruptive Technology is Opening Up New Business Opportunities

Delivering More Video Content at Half the Cost Using MPEG-4 AVC

Bob WilsonChairman & CEO

www.modulusvideo.com

Delivering More Video Content at Half the Cost Using MPEG-4 AVC Bob Wilson Chairman & CEO .

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