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Автор: Rudolph Balaz; Dave Marsh. Чтобы познакомиться с картинкой полного размера, нажмите на её эскиз. Чтобы можно было использовать все картинки для урока информатики, скачайте бесплатно презентацию «Video Improvements In Windows 7.pptx» со всеми картинками в zip-архиве размером 2462 КБ.
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1 | 18 | video streaming capture Will open up a | |
2 | Video Improvements In Windows 7. Dave | whole host of webcam capture app scenarios | |
Marsh Principal Program Manager Lead for | For webcams UVC1.1 class driver with | ||
Media in Windows Microsoft Corporation | driver extensibility Made it nice and | ||
Rudolph Balaz Senior Program Manager Lead, | simple for the user. | ||
DirectX team Microsoft Corporation. | 19 | Developer Support. | |
3 | This Session: GRA-T585. Windows 7 | 20 | Media Foundation Technology. Ease of |
provides a rich platform for video. This | use enhancements Performance enhancements | ||
session highlights the video improvement | New components such as SourceReader and | ||
in Windows 7 and discusses how components | SinkWriter Many more containers and codecs | ||
plug into the Windows 7 video architecture | Hardware pipeline support Intelligent | ||
Topics covered will include playback and | proxies MF stream capture Trusted merit | ||
transcoding of different video formats, | DirectShow and FSDK still supported, but | ||
DirectX Video Acceleration-High Definition | all new investments are on Media | ||
(DXVA-HD), and overlays. | Foundation. | ||
4 | Agenda. Video playback and transcode | 21 | Pipeline Transcoding. Media Session. |
functionality Meeting ISV video rendering | Media Source. Media Sink. Source Resolver. | ||
needs. | Topology & Loader. Encoding Profile | ||
5 | Windows 7 Investments. Optimized | Management. Scheme Handler. Byte Stream | |
Playback Play all the common media formats | Handler. File, Network. Proc. File, | ||
Fast transcode Make the PC the center of | Network. MFT Decoder. MFT Encoder. Byte | ||
an ecosystem of portable video player | Stream. Byte Stream. or. or. Custom Input. | ||
devices New camera support Webcams, Point | Custom Output. or. Hardware Acceleration. | ||
and shoot, and AVCHD Developer Support | Webcam. Video Scaling/Conversion, Audio | ||
Ways to access Media Foundation | Processing, Other. Pipeline Topology. | ||
technology. | 22 | New MF Components Source Reader, Sink | |
6 | Optimized Playback. | Writer. Direct access to consume, modify, | |
7 | Media Formats. Containers and Codecs | and create media samples. Sink Writer. | |
Tenuous relationship between Popular | Source Reader. Media Source. Media Sink. | ||
format name MP4, DivX, MJPEG File | Encoding Profile Mgmt. File, Network. | ||
extension mappings .mp4, .m4a, .mp4v, | File, Network. Custom Input. Custom | ||
.mov, .avi, .divx, … Characteristics of | Output. Webcam. Specific Conversions *. | ||
container used Streaming support, markers, | MFT Decoder *. Processing MFT *. MFT | ||
… Video and audio codecs Proprietary DRM | Encoder *. * Optional. Hardware | ||
Makes the realization of “format X just | Acceleration. Specify URL, Byte Stream, or | ||
plays” rather complex. | Media Source. Sync or Async Control and | ||
8 | Simplified Statement. Many new popular | Status. Sync or Async Control and Status. | |
media formats have emerged over the years, | Specify URL, Byte Stream, or Media Sink. | ||
but the average computer user couldn’t | 23 | Developer Interface layers. Ways to | |
care less We've made mainstream media | access MF technology Media Foundation | ||
playback just work in Windows 7 Win7 can | interfaces MF Play API and Transcode API | ||
play these Containers MP4, AVI, MOV, 3GP, | WMP.OCX WPF Silverlight For specialized | ||
AVCHD, ADTS, M4A, DVR-MS, WTV Win7 can | low level needs Raw Video Rendering | ||
play these Codecs H.264, MPEG4-SP, | interfaces. Video is just a data type | ||
ASP/Divx/Xvid, MJPEG, DV, AAC-LC, AAC-HE | Video is just a 3D texture. WPF XAML. | ||
Efficient on power usage Efficient on low | 24 | demo. H.264 In 3D WPF On Windows 7. | |
cost PCs Consistent metadata. | 25 | demo. Play Almost Anything. | |
9 | New Inbox MF Decode Detail Additions | 26 | demo. Drag And Drop Transcode. |
relative to Vista Inbox Decoders. H.264: | 27 | demo. Hardware Codecs. | |
Baseline, Main, and High Profiles @ all | 28 | Video Improvements In Windows7. | |
levels IDCT, MoComp, and VLD DXVA AAC: LC | Rudolph Balaz Senior Program Manager Lead, | ||
multichannel, HE v1 (SBR), HE v2 (PS) | Windows Graphics/DirectX Microsoft | ||
MJPEG and DV native MFT decoders added for | Corporation. | ||
AVI. Generic Format Name. File Extensions. | 29 | Media Foundation+Infrastructure. Media | |
Container. Video Codecs. Audio Codecs. | Foundation. Source Reader. Sink Writer. | ||
MPEG-4. .mp4 (A, V, A+V) .m4a (A). ISO | Custom Output. Hardware Acceleration. | ||
MPEG-4. H.264, MPEG-4 ASP and SP. AAC, | Media Source. Media Sink. File, Network. | ||
MP3. 3GPP/3GPP2. .3gp, .3g2 (A, V, A+V). | File, Network. Encoding Profile Mgmt. | ||
3GP. H.264, MPEG-4 SP. AAC. AAC. .aac (A). | Custom Input. Direct3D. Webcam. Desktop | ||
ADTS. AAC. ASP in AVI (compatible with | Window Manager. Specific Conversions *. | ||
DivX ® 4-6 video codec, Xvid, 3ivx. .avi | MFT Decoder *. Processing MFT *. MFT | ||
(V, A+V). AVI. MPEG-4 ASP. MP3, MS ADPCM. | Encoder *. COPP/OPM. WDDM. Video Memory. | ||
AVCHD. .m2t, .m2ts, .mts (A, V, A+V). | GPU. Direct3D. DirectX Video Acceleration | ||
MPEG-2 TS. H.264. Dolby Digital, LPCM. | (DXVA). Cable. Windows Display Driver | ||
HDV. .m2t, .m2ts, .mts (A, V, A+V). MPEG-2 | Model (WDDM). Display Driver / GPU | ||
TS. MPEG-2. MPEG-1 L2. | Hardware. Display. * Optional. | ||
10 | Fast Transcode. | 30 | Third Party ISV Needs. World class |
11 | PC Is Center Of The Devices Ecosystem. | applications Robust playback Existing | |
PC is central media store Often you want | playback applications Maybe not Media | ||
to be able to watch the content when | Foundation based Performance expectations | ||
you're out and about Great examples of a | Playback – low end hardware Power – | ||
Portable Media Players are Sony Walkman | battery life Contractual obligations. | ||
and Creative Zen W People want simple ways | 31 | 3rd Party ISV Pain points. Existing | |
of transferring content to devices without | code bases/Legacy Desktop composition | ||
having to be bothered with the underlying | turned disabled Unexpected | ||
complexities We have integrated great | glitching/scalability On low end hardware | ||
transcode technology into the Windows 7 | Hard to meet content output rules Private | ||
shell When you do a drag and drop on your | App to Driver side channels Business | ||
device, the necessary conversions happen | requirements. | ||
automatically. | 32 | Addressing 3rd Party Requirements In | |
12 | Different Formats. Different portable | Windows 7. | |
video players need different video formats | 33 | Publishing OPM. Addressing Legacy | |
Format needed will not be format in which | issues OPM (Output Protection Management) | ||
video is stored on PC Format on your PC | Specification and headers Usable directly | ||
will be whatever format content was | by applications DirectShow or Media | ||
delivered in Typically TV is MPEG2 More | Foundation or other… Updated base on new | ||
and more in the future it'll be HD | industry requirements Supports for Display | ||
resolution Typically, portable video | Clone, HDMI repeaters. | ||
devices need a lower resolution format to | 34 | Reducing Private Side Channels. | |
match their screens More and more in the | Preventing Screen Scraping D3D9Ex/DWM | ||
future they'll use H.264 video and AAC | enhancements Driver software protection | ||
audio Change format of video and audio | IHV Implementation using public interfaces | ||
content as part of the process of | Hardware based protection AES 128 for | ||
transferring content from PC store to | Encryption between CPU/GPU Support for | ||
device. | hardware crypto engines SHED scenarios. | ||
13 | Simple For User, Complex Underneath. | 35 | Use Of Overlays In playback. The bad |
User doesn't even have to think about | Desktop Composition disabled Video Memory | ||
transcode The whole process just looks | Pinned Available only via Legacy API’s | ||
like a drag and drop file copy Topology of | Hardware issues Hardware | ||
Media Foundation building blocks | (Availability/features) Only one overlay | ||
underneath that… Reads the source such as | The good Proven code in existing apps | ||
a recorded HDTV file Decodes using eg an | Assumed to be faster/more secure? | ||
MPEG2 decoder Processes it to get it into | 36 | Embracing - Overlay Support. Supported | |
the resolution that the portable player | with Desktop Composition Improved user | ||
needs Encodes it using the codec that the | experience No flashes No per frame | ||
portable player supports, eg H.264/AAC in | composition costs Available via D3D9 APIs | ||
MP4 container Only problem is that it | Simplifies code paths in application | ||
takes a while to do all this processing if | Simplifies use with existing applications. | ||
doing it on the CPU But we have hardware | 37 | Optimizations Playback. Memory | |
encode support to solve this. | pressure reporting Many processes compete | ||
14 | New Inbox MF Encode Detail Additions | for Video Memory Video application | |
relative to Vista Inbox Encoders. H.264 | typically use many buffers Enable | ||
Baseline profile level 3 with 1-pass CBR | applications to optimize playback by | ||
Bit rate up to 1.5Mbps Maximum size: 640 x | reducing buffering Can result in smoother | ||
480, maximum frame rate: 30fps AAC LC | playback. | ||
stereo with 44.1 or 48KHz sample rate 96, | 38 | Optimizations Playback. D3D9 Flip | |
128, 160, or 192KHz bit rate. Generic | model Improves Composition Performance | ||
Format Name. File Extensions. Container. | (similar to overlay) Reduces memory | ||
Video Codecs. Audio Codecs. MPEG-4. .mp4 | bandwidth needs Full screen exclusive with | ||
(A, V, A+V) .m4a (A). ISO MPEG-4. H.264 | DWM Eliminates flash MCE can be full | ||
Baseline. AAC-LC. 3GPP/3GPP2. .3gp, .3g2 | screen with composition. | ||
(A, V, A+V). 3GP. H.264 Baseline. AAC-LC. | 39 | Optimizing Playback. DXVA-HD - Extends | |
15 | Hardware Transcode. Lots of processing | DXVA HD video processing and composition | |
needed to transcode a file Transcoding a | models Examples BD, ISDB-T Standardized | ||
whole movie using software based | application Interfaces Drivers provide | ||
processing can take a couple of hours, | different private implementations | ||
even on a very fast processor Taking a | Available via Windows 7 optimized drivers | ||
long time to process is incompatible with | WDDM 1.1 optional driver features. | ||
the desire to hide all the transcode | 40 | Call To Action. Use the new video | |
rigmarole from the user New class of chips | format support Use the shell drag and drop | ||
coming along that provide hardware codecs | Make use of the new camera support Make | ||
These chips provide high speed | use of Media Foundation technology in your | ||
transcoding, ie hardware decoding of the | own apps Make use of playback | ||
input format, and hardware scaling, and | optimizations DXVA-HD, D3D9 Flip, Overlays | ||
hardware encoding to a different output | OPM, AES128, etc… | ||
format Also additional features to allow | 41 | Additional Resources. Media Foundation | |
ISVs to provide better Blu-ray player apps | http://msdn.microsoft.com/en-us/library/ms | ||
Various companies will be launching | 94197(VS.85).aspx DirectShow | ||
Hardware Codec chips These chips will be | http://msdn.microsoft.com/en-us/library/ms | ||
packaged as plugin modules Chips will also | 83323(VS.85).aspx DirectX | ||
go onto motherboards Even better is to | http://msdn.microsoft.com/directx | ||
make it a standard motherboard chipset | Whitepapers | ||
feature. | http://www.microsoft.com/whdc/device/displ | ||
16 | IHV Supplied MFTs. AV-Stream is the | y/ Related Sessions GRA-T515: DirectX – | |
preferred way It’s the easiest way, but | Core Graphics for Windows 7 GRA-T518: WDDM | ||
not the only way Or third parties can | v1.1 GRA-T634: GPU Performance and GPU/CPU | ||
produce their own MFT and use a private | Interactions in Windows 7 MBL-T579: | ||
interface to communicate with their | Connecting Projectors and Using Docking | ||
hardware Conform to the MFT input/output | Stations with Windows 7. | ||
interfaces so that it looks like a | 42 | © 2008 Microsoft Corporation. All | |
software decoder or encoder Expose decode | rights reserved. Microsoft, Windows, | ||
and encode as separate MFTs Codec | Windows Vista and other product names are | ||
certification for hardware accelerated | or may be registered trademarks and/or | ||
MFTs will provide mechanism for topology | trademarks in the U.S. and/or other | ||
builder to choose them Provides robust way | countries. The information herein is for | ||
to know supplier and know it really is | informational purposes only and represents | ||
hardware Tied to new robust merit scheme | the current view of Microsoft Corporation | ||
Uses PVP-OPM-like embedded challenge | as of the date of this presentation. | ||
certificate Best to store certificate in | Because Microsoft must respond to changing | ||
hardware, but can be obfuscated in driver. | market conditions, it should not be | ||
17 | New Camera Support. | interpreted to be a commitment on the part | |
18 | Wide Variety Of Support. Play and | of Microsoft, and Microsoft cannot | |
transcode whole range of formats that come | guarantee the accuracy of any information | ||
from cameras Camcorders using AVCHD | provided after the date of this | ||
container H.264 in MP4 from next year’s | presentation. MICROSOFT MAKES NO | ||
‘still’ cameras FlipVideo using Xvid In | WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, | ||
the past you would have had to install a | AS TO THE INFORMATION IN THIS | ||
special separate app Media Foundation | PRESENTATION. | ||
Video Improvements In Windows 7.pptx |
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