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Audio and Video Streaming

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1Audio and Video Streaming. Presented 24frames per second ASF (Advanced Streaming
by: Thanh Ly Liqin Zhang Ronald Togelang Format) - Has been submitted to ISO for
Hector Frausto. standardization - Expected to replace AVI
2AGENDA. Introduction - format.
D:\Introduction.avi Audio Streaming 25Codec (Compressor/Decompressor).
Overview Video Streaming Overview • Audio Coding techniques to compress video data
Streaming Demonstration • Video Streaming The newest codec change their sampling
Demonstration Questions and Answers. rate as they run Choice of codec is the
3AUDIO STREAMING OVERVIEW. Audio File biggest factor to determine the bandwidth
Features Audio Streaming Concept Audio needed to connect the server and receive
Streaming Advantages Audio Streaming content Many of the codecs follow
Applications Audio Streaming Format Audio international standards.
Streaming Products. 26Content Compression. MPEG (A working
4Audio File Features. Audio file is a group of ISO) - The most common standard
record of captured sound that can be for video compression and file formats -
played back e.g. .WAV File Audio files are Generally produce better quality video
compressed for storage or faster than other formats - High compression rate
transmission Requires high bandwidth to - MPEG1, MPEG2 and MPEG4.
transfer across the network. 27MPEG-1. MPEG-1 was designed for coding
5?PC Audio Format. ?PC Windows Media. progressive video at a transmission rate
Audio Streaming Concept. LAN, Intranet, of about 1.5 million bits per second. It
Internet. .ASF Real Producer .RM. .WAV was designed specifically for Video-CD and
Live Broadcast. Windows Media Encoder Real CD-i media. MPEG-1 audio layer-3 (MP3) has
Producer 7.0. Streaming Software. also evolved from early MPEG work.
6Audio Streaming Concept. 28MPEG-2. MPEG-2 was designed for coding
Analog-to-Digital modulation Streaming interlaced images at transmission rates
audio technologies relies on: Sound above 4 million bits per second. MPEG-2 is
sequences Compression schemes Compression used for digital TV broadcast and DVD. An
schemes (encoding) decreases the audio’s MPEG-2 player can handle MPEG-1 data as
bandwidth requirements: Lowering the well.
audio’s sampling rate Filtering high 29MPEG-3. A proposed MPEG-3 standard,
frequencies Performing other waveform. intended for High Definition TV (HDTV),
7Audio Streaming Advantages. Real time was merged with the MPEG-2 standard when
audio content. Low bandwidth media used. it became apparent that the MPEG-2
No waiting for downloading audio file. standard met the HDTV requirements.
Internet users can enjoy a live online 30MPEG-4. An MPEG-4 standard is in the
program. final stages of development and release.
8Audio Streaming Applications. It is a much more ambitious standard and
Long-distance or automated training addresses speech and video synthesis,
Seminars Concerts Speeches Music samples fractal geometry, computer visualization,
Online corporate messages Hear the news / and an artificial intelligence (AI)
Radio. approach to reconstructing images.
9Audio Formats. Microsoft Windows Media 31Major Products. Microsoft Windows
Formats .avi, .asf, .asx, .rmi, .wav Media Technologies
Moving Pictures Experts Group (MPEG) .mp3 http://www.microsoft.com/windows/windowsme
Musical Instrument Digital Interface ia/ RealSystem G2
(MIDI) .mid, .rmi Apple Quick Time, http://www.realnetwork.com.
Macintosh AIFF Resource .qt, .aif, .aifc, 32Comparison WMT –vs- RealSystem G2.
.aiff, .mov UNIX Formats .au, .snd. Head to head comparison Feature Comparison
10Audio Streaming Products. Window Media More Information
Technologies (Microsoft) RealSystem G2 http://www.microsoft.com/windows/windowsme
(RealNetworks) Shockwave Streaming Audio ia/.
(Macromedia) IBM Bamba (IBM) Streamworks 33Comparison WMT –vs- RealSystem G2.
(Xing Technology) Media Player (Netscape). Cost Analysis - Prepared by Approach,
11Windows Media Technologies by Inc., Key findings - Both streaming
Microsoft. Leading digital media platform. products results in positive returns on
Windows Media Technologies consist of : investment - Microsoft solution is more
Windows Media Player Windows Media economical than the RealNetwork solution
Services Windows Media Tools Windows Media Download in Word format.
SDK Free download at 34Audio Streaming Architecture. Creating
http://www.microsoft.com/windows/windowsme Audio File Demonstration of Streaming
ia/. Software Demo of Streaming Process Windows
12Windows Media Technologies. Windows Media Encoder RealProducer 7 Basic Play
Media Audio codec provides the Audio File.
FM-radio-quality sound at half the bit 35Creating Audio File. Record From File
rate of MP3 Integration with other Audio files located in your hard drive
Microsoft products (Windows NT Server, Record Form Media Device Media device such
Microsoft Site Server, Microsoft as Microphone, CD Player, PC Camera, etc.
BackOffice) Digital rights management Live Broadcast Broadcast live media stream
Advanced Compression Technology from your computer.
Broadcasting. 36Installation of Streaming Software.
13WMT Advantages. Wide bandwidth range Windows Media Tools Windows Media Encoder
Intelligent streaming Multiple bit rate RealSystems G2 RealProducer 7 Basic.
encoding High scalability Built-in 37Windows Media Technologies. Download
multicast service Seamless stream Windows Media Tools.
switching Easy Internet Radio http://www.microsoft.com/windows/windowsme
Distribution. ia.
14Real Networks. High quality streaming 38RealSystem G2 Download RealProducer.
audio at all bandwidths on both the http://www.realnetworks.com/products/produ
Internet and corporate Intranets. Support er/.
realtime and on-demand, all sounds (stereo 39Playing Audio File. Windows Media
and mono) Take advantage of key features Player RealPlayer.
of Window 2000 (load balancing, 40Windows Media Player 6.4.
clustering, stability) Operating systems http://www.microsoft.com/windows/windowsme
as Window NT, Linux, Sun Solaris. ia/.
15Real System G2 Products & 41Download RealPlayer.
Advantages. RealPlayer 7 Over 150 live http://www.real.com/player/index.
radio stations built-in, superb audio 42Real Player 7.0 Basic.
RealProducer 7 Streaming Software; 43Video Streaming Presentation. Active
Efficient encoding; Reach the widest Streaming Format (ASF) - MS Defacto
possible audience; choice of operating standard for streaming video. Real Media
systems RealPresenter G2 Live/recorded (RM) - Real’s standard for streaming
capability; Presentation Manager. video.
16RealSystem G2 Products & 44Video Streaming. Codec selections from
Advantages. RealSlideshow 2 Combine Real Media.
pictures with music or speech, customize 45Video Streaming. Codec Selections from
the layout of presentation RealServer 7 60 Windows Media.
simultaneous sessions of live or on-demand 46Video Streaming. Streaming with Real
streaming; Near CD quality Internet audio Producer. Real Producer. - C:\Program
Free download at: Files\REAL\RealProducer\realprod.exe.
http://www.realnetworks.com/products/. 47Video Streaming. Streaming with
17Video Streaming. Video Streaming Windows Media Encoder . Windows Media. -
Objective Streaming Advantages Video C:\Program Files\Windows Media
Streaming Architecture Compression and Components\Tools\NsRex.exe.
Decompression-codec MPEG 1-4 Introduction 48Video Streaming. Using Windows Media
Major Products and Features Comparison. Player. - C:\Program Files\Windows Media
18Video Streaming Objective. The object Player\mplayer2.exe.
is to overcome the negative effects of 49Video Streaming. Streamed file size
physical distance and network technology comparison. - C:\WINDOWS\EXPLORER.SCF
limitation. Unstreamed *.AVI file = 155,290 KB
19Streaming Advantages. Reduce setup RealMedia Streamed file *.RM = 483 KB
time Reduction in client storage Windows Media Streamed file *.ASF = 1,283
requirement Video can be viewed in real KB.
time Transmission signals over low 50Video Streaming Statistics.
bandwidth facilities. 51Video Streaming Statistics.
20Video Streaming Architecture. Content 52Video Streaming. Live feed Video
Creation/Capture Content Management Capture. - C:\Program
Content Formatting (Compression) Delivery Files\Logitech\Logitech
Distribution Presentation (Viewing) View QuickCam\QuickCam.exe Stream from live
Control. feed. - C:\Program
21Video Capture. Converting analog to Files\REAL\RealProducer\realprod.exe -
video signals A special video capture card C:\Program Files\Windows Media
to convert the analog signals to digital Components\Tools\NsRex.exe.
form and compresses the data. Also digital 53Audio/Video Streaming Summary. Capture
video devices that can capture images and Audio/Video Create your file Install the
transfer to a computer. streaming software Windows Media Tools
22Content Management. Critical in video http://www.microsoft.com/windows/windowsme
server The purpose including create, ia/ RealProducer 7 Basic
collect, catalog, organize, store, and http://www.realnetworks.com/products/.
access to massive multimedia information 54Audio/Video Streaming Summary. Play
database. the Audio Stream File Windows Media Player
23Video Input Formats. AVI ActiveMovie 6.4
Cinepak Indeo motion-JPEG. MPEG QuickTime http://www.microsoft.com/windows/windowsme
RealVideo Video for Windows XGA. ia/ RealPlayer 7 Basic
24Video Formats AVI & ASF. Developed http://www.real.com/player/index.
by Microsoft AVI (Audio Video Interleaved) 55Questions and Answers.
- limited to 320x240 resolution - 30
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