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Audio and Video Streaming
Audio and Video Streaming
AGENDA
AGENDA
AUDIO STREAMING OVERVIEW
AUDIO STREAMING OVERVIEW
Audio File Features
Audio File Features
?PC Audio Format
?PC Audio Format
Audio Streaming Concept
Audio Streaming Concept
Audio Streaming Advantages
Audio Streaming Advantages
Audio Streaming Applications
Audio Streaming Applications
Audio Formats
Audio Formats
Audio Streaming Products
Audio Streaming Products
Windows Media Technologies by Microsoft
Windows Media Technologies by Microsoft
Windows Media Technologies
Windows Media Technologies
WMT Advantages
WMT Advantages
Real Networks
Real Networks
Real System G2 Products & Advantages
Real System G2 Products & Advantages
RealSystem G2 Products & Advantages
RealSystem G2 Products & Advantages
Video Streaming
Video Streaming
Video Streaming Objective
Video Streaming Objective
Streaming Advantages
Streaming Advantages
Video Streaming Architecture
Video Streaming Architecture
Video Capture
Video Capture
Content Management
Content Management
Video Input Formats
Video Input Formats
Video Formats AVI & ASF
Video Formats AVI & ASF
Codec (Compressor/Decompressor)
Codec (Compressor/Decompressor)
Content Compression
Content Compression
MPEG-1
MPEG-1
MPEG-2
MPEG-2
MPEG-3
MPEG-3
MPEG-4
MPEG-4
Major Products
Major Products
Comparison WMT –vs- RealSystem G2
Comparison WMT –vs- RealSystem G2
Comparison WMT –vs- RealSystem G2
Comparison WMT –vs- RealSystem G2
Audio Streaming Architecture
Audio Streaming Architecture
Creating Audio File
Creating Audio File
Installation of Streaming Software
Installation of Streaming Software
Windows Media Technologies
Windows Media Technologies
RealSystem G2 Download RealProducer
RealSystem G2 Download RealProducer
Playing Audio File
Playing Audio File
Windows Media Player 6.4
Windows Media Player 6.4
Download RealPlayer
Download RealPlayer
Real Player 7.0 Basic
Real Player 7.0 Basic
Video Streaming Presentation
Video Streaming Presentation
Video Streaming
Video Streaming
Video Streaming
Video Streaming
Video Streaming
Video Streaming
Video Streaming
Video Streaming
Video Streaming
Video Streaming
Video Streaming
Video Streaming
Video Streaming Statistics
Video Streaming Statistics
Video Streaming Statistics
Video Streaming Statistics
Video Streaming
Video Streaming
Audio/Video Streaming Summary
Audio/Video Streaming Summary
Audio/Video Streaming Summary
Audio/Video Streaming Summary
Questions and Answers
Questions and Answers

Презентация: «Audio and Video Streaming». Автор: HP Authorized Customer. Файл: «Audio and Video Streaming.ppt». Размер zip-архива: 746 КБ.

Audio and Video Streaming

содержание презентации «Audio and Video Streaming.ppt»
СлайдТекст
1 Audio and Video Streaming

Audio and Video Streaming

Presented by: Thanh Ly Liqin Zhang Ronald Togelang Hector Frausto

2 AGENDA

AGENDA

Introduction - D:\Introduction.avi Audio Streaming Overview Video Streaming Overview • Audio Streaming Demonstration • Video Streaming Demonstration Questions and Answers

3 AUDIO STREAMING OVERVIEW

AUDIO STREAMING OVERVIEW

Audio File Features Audio Streaming Concept Audio Streaming Advantages Audio Streaming Applications Audio Streaming Format Audio Streaming Products

4 Audio File Features

Audio File Features

Audio file is a record of captured sound that can be played back e.g. .WAV File Audio files are compressed for storage or faster transmission Requires high bandwidth to transfer across the network

5 ?PC Audio Format

?PC Audio Format

?PC Windows Media

Audio Streaming Concept

LAN, Intranet, Internet

.ASF Real Producer .RM

.WAV Live Broadcast

Windows Media Encoder Real Producer 7.0

Streaming Software

6 Audio Streaming Concept

Audio Streaming Concept

Analog-to-Digital modulation Streaming audio technologies relies on: Sound sequences Compression schemes Compression schemes (encoding) decreases the audio’s bandwidth requirements: Lowering the audio’s sampling rate Filtering high frequencies Performing other waveform

7 Audio Streaming Advantages

Audio Streaming Advantages

Real time audio content. Low bandwidth media used. No waiting for downloading audio file. Internet users can enjoy a live online program.

8 Audio Streaming Applications

Audio Streaming Applications

Long-distance or automated training Seminars Concerts Speeches Music samples Online corporate messages Hear the news / Radio

9 Audio Formats

Audio Formats

Microsoft Windows Media Formats .avi, .asf, .asx, .rmi, .wav Moving Pictures Experts Group (MPEG) .mp3 Musical Instrument Digital Interface (MIDI) .mid, .rmi Apple Quick Time, Macintosh AIFF Resource .qt, .aif, .aifc, .aiff, .mov UNIX Formats .au, .snd

10 Audio Streaming Products

Audio Streaming Products

Window Media Technologies (Microsoft) RealSystem G2 (RealNetworks) Shockwave Streaming Audio (Macromedia) IBM Bamba (IBM) Streamworks (Xing Technology) Media Player (Netscape)

11 Windows Media Technologies by Microsoft

Windows Media Technologies by Microsoft

Leading digital media platform. Windows Media Technologies consist of : Windows Media Player Windows Media Services Windows Media Tools Windows Media SDK Free download at http://www.microsoft.com/windows/windowsmedia/

12 Windows Media Technologies

Windows Media Technologies

Windows Media Audio codec provides FM-radio-quality sound at half the bit rate of MP3 Integration with other Microsoft products (Windows NT Server, Microsoft Site Server, Microsoft BackOffice) Digital rights management Advanced Compression Technology Broadcasting

13 WMT Advantages

WMT Advantages

Wide bandwidth range Intelligent streaming Multiple bit rate encoding High scalability Built-in multicast service Seamless stream switching Easy Internet Radio Distribution

14 Real Networks

Real Networks

High quality streaming audio at all bandwidths on both the Internet and corporate Intranets. Support realtime and on-demand, all sounds (stereo and mono) Take advantage of key features of Window 2000 (load balancing, clustering, stability) Operating systems as Window NT, Linux, Sun Solaris

15 Real System G2 Products & Advantages

Real System G2 Products & Advantages

RealPlayer 7 Over 150 live radio stations built-in, superb audio RealProducer 7 Streaming Software; Efficient encoding; Reach the widest possible audience; choice of operating systems RealPresenter G2 Live/recorded capability; Presentation Manager

16 RealSystem G2 Products & Advantages

RealSystem G2 Products & Advantages

RealSlideshow 2 Combine pictures with music or speech, customize the layout of presentation RealServer 7 60 simultaneous sessions of live or on-demand streaming; Near CD quality Internet audio Free download at: http://www.realnetworks.com/products/

17 Video Streaming

Video Streaming

Video Streaming Objective Streaming Advantages Video Streaming Architecture Compression and Decompression-codec MPEG 1-4 Introduction Major Products and Features Comparison

18 Video Streaming Objective

Video Streaming Objective

The object is to overcome the negative effects of physical distance and network technology limitation.

19 Streaming Advantages

Streaming Advantages

Reduce setup time Reduction in client storage requirement Video can be viewed in real time Transmission signals over low bandwidth facilities

20 Video Streaming Architecture

Video Streaming Architecture

Content Creation/Capture Content Management Content Formatting (Compression) Delivery Distribution Presentation (Viewing) View Control

21 Video Capture

Video Capture

Converting analog to video signals A special video capture card to convert the analog signals to digital form and compresses the data. Also digital video devices that can capture images and transfer to a computer

22 Content Management

Content Management

Critical in video server The purpose including create, collect, catalog, organize, store, and access to massive multimedia information database

23 Video Input Formats

Video Input Formats

AVI ActiveMovie Cinepak Indeo motion-JPEG

MPEG QuickTime RealVideo Video for Windows XGA

24 Video Formats AVI & ASF

Video Formats AVI & ASF

Developed by Microsoft AVI (Audio Video Interleaved) - limited to 320x240 resolution - 30 frames per second ASF (Advanced Streaming Format) - Has been submitted to ISO for standardization - Expected to replace AVI format

25 Codec (Compressor/Decompressor)

Codec (Compressor/Decompressor)

Coding techniques to compress video data The newest codec change their sampling rate as they run Choice of codec is the biggest factor to determine the bandwidth needed to connect the server and receive content Many of the codecs follow international standards

26 Content Compression

Content Compression

MPEG (A working group of ISO) - The most common standard for video compression and file formats - Generally produce better quality video than other formats - High compression rate - MPEG1, MPEG2 and MPEG4

27 MPEG-1

MPEG-1

MPEG-1 was designed for coding progressive video at a transmission rate of about 1.5 million bits per second. It was designed specifically for Video-CD and CD-i media. MPEG-1 audio layer-3 (MP3) has also evolved from early MPEG work.

28 MPEG-2

MPEG-2

MPEG-2 was designed for coding interlaced images at transmission rates above 4 million bits per second. MPEG-2 is used for digital TV broadcast and DVD. An MPEG-2 player can handle MPEG-1 data as well.

29 MPEG-3

MPEG-3

A proposed MPEG-3 standard, intended for High Definition TV (HDTV), was merged with the MPEG-2 standard when it became apparent that the MPEG-2 standard met the HDTV requirements.

30 MPEG-4

MPEG-4

An MPEG-4 standard is in the final stages of development and release. It is a much more ambitious standard and addresses speech and video synthesis, fractal geometry, computer visualization, and an artificial intelligence (AI) approach to reconstructing images.

31 Major Products

Major Products

Microsoft Windows Media Technologies http://www.microsoft.com/windows/windowsmedia/ RealSystem G2 http://www.realnetwork.com

32 Comparison WMT –vs- RealSystem G2

Comparison WMT –vs- RealSystem G2

Head to head comparison Feature Comparison More Information http://www.microsoft.com/windows/windowsmedia/

33 Comparison WMT –vs- RealSystem G2

Comparison WMT –vs- RealSystem G2

Cost Analysis - Prepared by Approach, Inc., Key findings - Both streaming products results in positive returns on investment - Microsoft solution is more economical than the RealNetwork solution Download in Word format

34 Audio Streaming Architecture

Audio Streaming Architecture

Creating Audio File Demonstration of Streaming Software Demo of Streaming Process Windows Media Encoder RealProducer 7 Basic Play the Audio File

35 Creating Audio File

Creating Audio File

Record From File Audio files located in your hard drive Record Form Media Device Media device such as Microphone, CD Player, PC Camera, etc. Live Broadcast Broadcast live media stream from your computer

36 Installation of Streaming Software

Installation of Streaming Software

Windows Media Tools Windows Media Encoder RealSystems G2 RealProducer 7 Basic

37 Windows Media Technologies

Windows Media Technologies

Download Windows Media Tools

http://www.microsoft.com/windows/windowsmedia

38 RealSystem G2 Download RealProducer

RealSystem G2 Download RealProducer

http://www.realnetworks.com/products/producer/

39 Playing Audio File

Playing Audio File

Windows Media Player RealPlayer

40 Windows Media Player 6.4

Windows Media Player 6.4

http://www.microsoft.com/windows/windowsmedia/

41 Download RealPlayer

Download RealPlayer

http://www.real.com/player/index

42 Real Player 7.0 Basic

Real Player 7.0 Basic

43 Video Streaming Presentation

Video Streaming Presentation

Active Streaming Format (ASF) - MS Defacto standard for streaming video. Real Media (RM) - Real’s standard for streaming video

44 Video Streaming

Video Streaming

Codec selections from Real Media.

45 Video Streaming

Video Streaming

Codec Selections from Windows Media.

46 Video Streaming

Video Streaming

Streaming with Real Producer. Real Producer. - C:\Program Files\REAL\RealProducer\realprod.exe

47 Video Streaming

Video Streaming

Streaming with Windows Media Encoder . Windows Media. - C:\Program Files\Windows Media Components\Tools\NsRex.exe

48 Video Streaming

Video Streaming

Using Windows Media Player. - C:\Program Files\Windows Media Player\mplayer2.exe

49 Video Streaming

Video Streaming

Streamed file size comparison. - C:\WINDOWS\EXPLORER.SCF Unstreamed *.AVI file = 155,290 KB RealMedia Streamed file *.RM = 483 KB Windows Media Streamed file *.ASF = 1,283 KB

50 Video Streaming Statistics

Video Streaming Statistics

51 Video Streaming Statistics

Video Streaming Statistics

52 Video Streaming

Video Streaming

Live feed Video Capture. - C:\Program Files\Logitech\Logitech QuickCam\QuickCam.exe Stream from live feed. - C:\Program Files\REAL\RealProducer\realprod.exe - C:\Program Files\Windows Media Components\Tools\NsRex.exe

53 Audio/Video Streaming Summary

Audio/Video Streaming Summary

Capture Audio/Video Create your file Install the streaming software Windows Media Tools http://www.microsoft.com/windows/windowsmedia/ RealProducer 7 Basic http://www.realnetworks.com/products/

54 Audio/Video Streaming Summary

Audio/Video Streaming Summary

Play the Audio Stream File Windows Media Player 6.4 http://www.microsoft.com/windows/windowsmedia/ RealPlayer 7 Basic http://www.real.com/player/index

55 Questions and Answers

Questions and Answers

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