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MPEG-4 & Windows Media
MPEG-4 & Windows Media
Overview
Overview
Digital Media World
Digital Media World
Windows Media Tech
Windows Media Tech
Windows Media Tech and MPEG4
Windows Media Tech and MPEG4
MPEG-4 Status in Industry
MPEG-4 Status in Industry
Benefits of MPEG-4
Benefits of MPEG-4
Microsoft Efforts in MPEG-4
Microsoft Efforts in MPEG-4
Challenges Facing MPEG-4
Challenges Facing MPEG-4
Microsoft’s Position on MPEG-4
Microsoft’s Position on MPEG-4
Summary
Summary
Q & A
Q & A
MPEG-4 & Windows Media
MPEG-4 & Windows Media

Презентация: «MPEG-4 & Windows Media». Автор: Jordi Ribas. Файл: «MPEG-4 & Windows Media.ppt». Размер zip-архива: 2009 КБ.

MPEG-4 & Windows Media

содержание презентации «MPEG-4 & Windows Media.ppt»
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1 MPEG-4 & Windows Media

MPEG-4 & Windows Media

Dr. Jordi Ribas-Corbera Lead Program Manager, Codecs Digital Media Division Microsoft Corp JordiR@microsoft.com

2 Overview

Overview

Digital Media Introduction Windows Media Technologies and MPEG-4 MPEG-4 status in industry Benefits of MPEG-4 Microsoft efforts in MPEG-4 Challenges facing MPEG-4 Microsoft’s position on MPEG-4 Summary

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3 Digital Media World

Digital Media World

Rich Services

Many devices Wired or wireless Access from anywhere Software Integration Personalized delivery

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4 Windows Media Tech

Windows Media Tech

Authoring

Playback

Distribution

Live Content

License Server

On-demand Content

Windows Media Encoder

Windows Media Services Server

Windows Media Player PC, Hand-held, STB

Download & Play Streaming

Live Feed

Streaming from a WM Server (or Web Server)

Stored Content

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5 Windows Media Tech and MPEG4

Windows Media Tech and MPEG4

WMT

WM Format CODECS: Windows Media Video Windows Media Audio ISO MPEG-4 Video Windows Media Screen

Windows Media Embedded PAK

Windows Media Player

Windows Media Encoder

Windows Media Rights Manager

Windows Media Format (ASF + Codecs + DRM)

Windows Media SDK

Windows Media Services

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6 MPEG-4 Status in Industry

MPEG-4 Status in Industry

Several companies are implementing different parts of MPEG-4 in their products Apple, Envivio.com, E-vue, Fraunhofer, Ivast, Matsushita, Microsoft, Philips, Sharp, Toshiba, … First successful interoperable products (developed independently) using MPEG-4 Video Sharp’s Internet ViewCam and Microsoft’s Windows Media Player, in 1999 NTT DoCoMo “Eggy” wireless terminal and Microsoft’s Windows Media Encoder and Player, in 2000 Some tools for creating and authoring MPEG-4 format emerging

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7 Benefits of MPEG-4

Benefits of MPEG-4

Standards are helpful for interoperability Follows successful MPEG-1 and MPEG-2 efforts Improved quality over previous MPEG standards E.g., MPEG-4 Video (version 1) saves 15-25% of bit rate over MPEG-2 -- according to MPEG-4 tests Larger set of target applications over previous MPEG standards From very low to very high bit rates Multiple codecs for different media (voice, still image, etc.) Several companies are already implementing parts of the standard

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8 Microsoft Efforts in MPEG-4

Microsoft Efforts in MPEG-4

Actively participant since 1995 to help develop MPEG-4 100+ contributions ? focused on Video coding Contributed C++ official version of Verification Model (VM) Video software (enc/dec) to ISO Current MPEG Video Chairman is from Microsoft Created essential IP used in standard Participating in MPEG-4 Video Patent Pool (currently there are 19 companies in M4VisualPHG) Helped make MPEG-4 popular in industry Supported MPEG-4 Video codec in Windows Media Technologies Partnered with companies using MPEG-4 Video Interoperating with products / services from NTT DoCoMo, Sharp, … Demo

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9 Challenges Facing MPEG-4

Challenges Facing MPEG-4

Huge standard ? limits interoperability Video with ~20 profiles (simple, core, main, still texture, streaming, advanced simple, etc.), Graphics (SHNC, FAPs), Audio, Speech, Systems (File Format, Bifs, DMIF) Many versions: V1, V2, V3, V4 … MPEG-4 is a large set of tools that companies pick and choose MPEG-4 video quality not competitive with state of the art in compression Other emerging Standards such as ITU-T H.26L claim better performance E.g., see Q15-H-21 in ftp://standard.pictel.com/video-site/9908_Ber, 1999. Popular internet codecs already providing better quality E.g., Real Video 8 and Windows Media Video 8 New video codec effort starting in MPEG Some features are unproven commercially as of now E.g., object-based coding, sprites, SHNC, FAPs, Bifs, … MPEG-4 lacks complete solution for end-to-end delivery No Digital Rights Management, Screen codec, Networking protocols/Server (with system layer) Licensing of MPEG-4 not yet clear

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10 Microsoft’s Position on MPEG-4

Microsoft’s Position on MPEG-4

Microsoft continues support of MPEG-4 video for interoperability Microsoft continues to innovate with Windows Media Customers demand the best quality State-of-the-art Windows Media Video and Audio codecs Complete end-to-end solutions Digital Rights Management High-performance streaming protocols/server Specialized codecs such as Windows Media Screen

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11 Summary

Summary

Microsoft provides support for MPEG-4 video today for interoperability MPEG-4 is a broad standard and likely not all components will achieve commercial viability Other technologies are also needed to meet customers requirements Customers can choose interoperability or better quality / feature set with Windows Media

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12 Q & A

Q & A

For more information http://microsoft.com/windowsmedia http://msdn.microsoft.com/windowsmedia

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13 MPEG-4 & Windows Media
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