Your SlideShare is downloading. ×
0
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Audio and Video streaming.ppt
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

Audio and Video streaming.ppt

11,652

Published on

0 Comments
3 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total Views
11,652
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
666
Comments
0
Likes
3
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. Audio and Video Streaming Presented by: Thanh Ly Liqin Zhang Ronald Togelang Hector Frausto
  • 2. AGENDA <ul><li>Introduction </li></ul><ul><li>- D:Introduction. avi </li></ul><ul><li>Audio Streaming Overview </li></ul><ul><li>Video Streaming Overview </li></ul><ul><li>• Audio Streaming Demonstration </li></ul><ul><li>• Video Streaming Demonstration </li></ul><ul><li>Questions and Answers </li></ul>
  • 3. AUDIO STREAMING OVERVIEW <ul><li>Audio File Features </li></ul><ul><li>Audio Streaming Concept </li></ul><ul><li>Audio Streaming Advantages </li></ul><ul><li>Audio Streaming Applications </li></ul><ul><li>Audio Streaming Format </li></ul><ul><li>Audio Streaming Products </li></ul>
  • 4. Audio File Features <ul><li>Audio file is a record of captured sound that can be played back </li></ul><ul><ul><li>e.g. .WAV File </li></ul></ul><ul><li>Audio files are compressed for storage or faster transmission </li></ul><ul><li>Requires high bandwidth to transfer across the network </li></ul>
  • 5. Audio Streaming Concept LAN, Intranet, Internet .WAV Live Broadcast .ASF Real Producer .RM Windows Media Encoder Real Producer 7.0  PC Audio Format  PC Windows Media Streaming Software
  • 6. Audio Streaming Concept <ul><li>Analog-to-Digital modulation </li></ul><ul><li>Streaming audio technologies relies on: </li></ul><ul><ul><li>Sound sequences </li></ul></ul><ul><ul><li>Compression schemes </li></ul></ul><ul><li>Compression schemes (encoding) decreases the audio’s bandwidth requirements: </li></ul><ul><ul><li>Lowering the audio’s sampling rate </li></ul></ul><ul><ul><li>Filtering high frequencies </li></ul></ul><ul><ul><li>Performing other waveform </li></ul></ul>
  • 7. Audio Streaming Advantages <ul><li>Real time audio content. </li></ul><ul><li>Low bandwidth media used. </li></ul><ul><li>No waiting for downloading audio file. </li></ul><ul><li>Internet users can enjoy a live online program. </li></ul>
  • 8. Audio Streaming Applications <ul><li>Long-distance or automated training </li></ul><ul><li>Seminars </li></ul><ul><li>Concerts </li></ul><ul><li>Speeches </li></ul><ul><li>Music samples </li></ul><ul><li>Online corporate messages </li></ul><ul><li>Hear the news / Radio </li></ul>
  • 9. Audio Formats <ul><li>Microsoft Windows Media Formats </li></ul><ul><ul><li>.avi, .asf, .asx, .rmi, .wav </li></ul></ul><ul><li>Moving Pictures Experts Group (MPEG) </li></ul><ul><ul><li>.mp3 </li></ul></ul><ul><li>Musical Instrument Digital Interface (MIDI) </li></ul><ul><ul><li>.mid, .rmi </li></ul></ul><ul><li>Apple Quick Time, Macintosh AIFF Resource </li></ul><ul><ul><li>.qt, .aif, .aifc, .aiff, .mov </li></ul></ul><ul><li>UNIX Formats </li></ul><ul><ul><li>.au, .snd </li></ul></ul>
  • 10. Audio Streaming Products <ul><li>Window Media Technologies (Microsoft) </li></ul><ul><li>RealSystem G2 (RealNetworks) </li></ul><ul><li>Shockwave Streaming Audio (Macromedia) </li></ul><ul><li>IBM Bamba (IBM) </li></ul><ul><li>Streamworks (Xing Technology) </li></ul><ul><li>Media Player (Netscape) </li></ul>
  • 11. Windows Media Technologies by Microsoft <ul><li>Leading digital media platform. </li></ul><ul><li>Windows Media Technologies consist of : </li></ul><ul><ul><li>Windows Media Player </li></ul></ul><ul><ul><li>Windows Media Services </li></ul></ul><ul><ul><li>Windows Media Tools </li></ul></ul><ul><ul><li>Windows Media SDK </li></ul></ul><ul><li>Free download at http://www. microsoft .com/windows/ windowsmedia / </li></ul>
  • 12. Windows Media Technologies <ul><li>Windows Media Audio codec provides FM-radio-quality sound at half the bit rate of MP3 </li></ul><ul><li>Integration with other Microsoft products (Windows NT Server, Microsoft Site Server, Microsoft BackOffice) </li></ul><ul><li>Digital rights management </li></ul><ul><li>Advanced Compression Technology Broadcasting </li></ul>
  • 13. WMT Advantages <ul><li>Wide bandwidth range </li></ul><ul><li>Intelligent streaming </li></ul><ul><li>Multiple bit rate encoding </li></ul><ul><li>High scalability </li></ul><ul><li>Built-in multicast service </li></ul><ul><li>Seamless stream switching </li></ul><ul><li>Easy Internet Radio Distribution </li></ul>
  • 14. Real Networks <ul><li>High quality streaming audio at all bandwidths on both the Internet and corporate Intranets. </li></ul><ul><li>Support realtime and on-demand, all sounds (stereo and mono) </li></ul><ul><li>Take advantage of key features of Window 2000 (load balancing, clustering, stability) </li></ul><ul><li>Operating systems as Window NT, Linux, Sun Solaris </li></ul>
  • 15. Real System G2 Products &amp; Advantages <ul><li>RealPlayer 7 </li></ul><ul><ul><li>Over 150 live radio stations built-in, superb audio </li></ul></ul><ul><li>RealProducer 7 </li></ul><ul><ul><li>Streaming Software; Efficient encoding; Reach the widest possible audience; choice of operating systems </li></ul></ul><ul><li>RealPresenter G2 </li></ul><ul><ul><li>Live/recorded capability; Presentation Manager </li></ul></ul>
  • 16. RealSystem G2 Products &amp; Advantages <ul><li>RealSlideshow 2 </li></ul><ul><ul><li>Combine pictures with music or speech, customize the layout of presentation </li></ul></ul><ul><li>RealServer 7 </li></ul><ul><ul><li>60 simultaneous sessions of live or on-demand streaming; Near CD quality Internet audio </li></ul></ul><ul><li>Free download at: </li></ul><ul><ul><li>http://www.realnetworks.com/products/ </li></ul></ul>
  • 17. Video Streaming <ul><li>Video Streaming Objective </li></ul><ul><li>Streaming Advantages </li></ul><ul><li>Video Streaming Architecture </li></ul><ul><li>Compression and Decompression-codec </li></ul><ul><li>MPEG 1-4 Introduction </li></ul><ul><li>Major Products and Features Comparison </li></ul>
  • 18. Video Streaming Objective <ul><li>The object is to overcome the negative effects of physical distance and network technology limitation. </li></ul>
  • 19. Streaming Advantages <ul><li>Reduce setup time </li></ul><ul><li>Reduction in client storage requirement </li></ul><ul><li>Video can be viewed in real time </li></ul><ul><li>Transmission signals over low bandwidth facilities </li></ul>
  • 20. Video Streaming Architecture <ul><li>Content Creation/Capture </li></ul><ul><li>Content Management </li></ul><ul><li>Content Formatting (Compression) </li></ul><ul><li>Delivery </li></ul><ul><li>Distribution </li></ul><ul><li>Presentation (Viewing) </li></ul><ul><li>View Control </li></ul>
  • 21. Video Capture <ul><li>Converting analog to video signals </li></ul><ul><ul><li>A special video capture card to convert the analog signals to digital form and compresses the data. </li></ul></ul><ul><ul><li>Also digital video devices that can capture images and transfer to a computer </li></ul></ul>
  • 22. Content Management <ul><li>Critical in video server </li></ul><ul><li>The purpose including create, collect, catalog, organize, store, and access to massive multimedia information database </li></ul>
  • 23. Video Input Formats <ul><li>AVI </li></ul><ul><li>ActiveMovie </li></ul><ul><li>Cinepak </li></ul><ul><li>Indeo </li></ul><ul><li>motion-JPEG </li></ul><ul><li>MPEG </li></ul><ul><li>QuickTime </li></ul><ul><li>RealVideo </li></ul><ul><li>Video for Windows </li></ul><ul><li>XGA </li></ul>
  • 24. Video Formats AVI &amp; ASF <ul><li>Developed by Microsoft </li></ul><ul><li>AVI (Audio Video Interleaved) </li></ul><ul><li>- limited to 320x240 resolution </li></ul><ul><li>- 30 frames per second </li></ul><ul><li>ASF (Advanced Streaming Format) </li></ul><ul><li>- Has been submitted to ISO for standardization </li></ul><ul><li>- Expected to replace AVI format </li></ul>
  • 25. Codec (Compressor/Decompressor) <ul><li>Coding techniques to compress video data </li></ul><ul><li>The newest codec change their sampling rate as they run </li></ul><ul><li>Choice of codec is the biggest factor to determine the bandwidth needed to connect the server and receive content </li></ul><ul><li>Many of the codecs follow international standards </li></ul>
  • 26. Content Compression <ul><li>MPEG (A working group of ISO) </li></ul><ul><li>- The most common standard for video </li></ul><ul><li>compression and file formats </li></ul><ul><li>- Generally produce better quality video than other </li></ul><ul><li>formats </li></ul><ul><li>- High compression rate </li></ul><ul><li>- MPEG1, MPEG2 and MPEG4 </li></ul>
  • 27. MPEG-1 <ul><li>MPEG-1 was designed for coding progressive video at a transmission rate of about 1.5 million bits per second. </li></ul><ul><li>It was designed specifically for Video-CD and CD-i media. </li></ul><ul><li>MPEG-1 audio layer-3 (MP3) has also evolved from early MPEG work. </li></ul>
  • 28. MPEG-2 <ul><li>MPEG-2 was designed for coding interlaced images at transmission rates above 4 million bits per second. </li></ul><ul><li>MPEG-2 is used for digital TV broadcast and </li></ul><ul><li>DVD. </li></ul><ul><li>An MPEG-2 player can handle MPEG-1 data as well. </li></ul>
  • 29. MPEG-3 <ul><li>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. </li></ul>
  • 30. MPEG-4 <ul><li>An MPEG-4 standard is in the final stages of development and release. </li></ul><ul><li>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. </li></ul>
  • 31. Major Products <ul><li>Microsoft Windows Media Technologies </li></ul><ul><li>http://www. microsoft .com/windows/ windowsmedia / </li></ul><ul><li>RealSystem G2 </li></ul><ul><li>http://www. realnetwork .com </li></ul>
  • 32. Comparison WMT –vs- RealSystem G2 <ul><li>Head to head comparison </li></ul><ul><li>Feature Comparison </li></ul><ul><li>M ore Information http://www. microsoft .com/windows/ windowsmedia / </li></ul>
  • 33. Comparison WMT –vs- RealSystem G2 <ul><li>Cost Analysis </li></ul><ul><li>- Prepared by Approach, Inc., </li></ul><ul><li>Key findings </li></ul><ul><li>- Both streaming products results in positive </li></ul><ul><li>returns on investment </li></ul><ul><li>- Microsoft solution is more economical than the </li></ul><ul><li>RealNetwork solution </li></ul><ul><li>Download in Word format </li></ul>
  • 34. Audio Streaming Architecture <ul><li>Creating Audio File </li></ul><ul><li>Demonstration of Streaming Software </li></ul><ul><li>Demo of Streaming Process </li></ul><ul><ul><li>Windows Media Encoder </li></ul></ul><ul><ul><li>RealProducer 7 Basic </li></ul></ul><ul><li>Play the Audio File </li></ul>
  • 35. Creating Audio File <ul><li>Record From File </li></ul><ul><ul><li>Audio files located in your hard drive </li></ul></ul><ul><li>Record Form Media Device </li></ul><ul><ul><li>Media device such as Microphone, CD Player, PC Camera, etc. </li></ul></ul><ul><li>Live Broadcast </li></ul><ul><ul><li>Broadcast live media stream from your computer </li></ul></ul>
  • 36. Installation of Streaming Software <ul><li>Windows Media Tools </li></ul><ul><ul><li>Windows Media Encoder </li></ul></ul><ul><li>RealSystems G2 </li></ul><ul><ul><li>RealProducer 7 Basic </li></ul></ul>
  • 37. Windows Media Technologies http://www.microsoft.com/windows/windowsmedia Download Windows Media Tools
  • 38. RealSystem G2 Download RealProducer http://www.realnetworks.com/products/producer/
  • 39. Playing Audio File <ul><li>Windows Media Player </li></ul><ul><li>RealPlayer </li></ul>
  • 40. Windows Media Player 6.4 http://www.microsoft.com/windows/windowsmedia/
  • 41. Download RealPlayer http://www.real.com/player/index
  • 42. Real Player 7.0 Basic
  • 43. Video Streaming Presentation <ul><li>Active Streaming Format (ASF) </li></ul><ul><li>- MS Defacto standard for streaming video. </li></ul><ul><li>Real Media (RM) </li></ul><ul><li>- Real’s standard for streaming video </li></ul>
  • 44. Video Streaming <ul><li>Codec selections from Real Media. </li></ul>
  • 45. Video Streaming <ul><li>Codec Selections from Windows Media. </li></ul>
  • 46. Video Streaming <ul><li>Streaming with Real Producer. </li></ul><ul><li>Real Producer. </li></ul><ul><ul><li>- C:Program FilesREAL RealProducer realprod .exe </li></ul></ul>
  • 47. Video Streaming <ul><li>Streaming with Windows Media Encoder . </li></ul><ul><li>Windows Media. </li></ul><ul><ul><li>- C:Program FilesWindows Media ComponentsTools NsRex .exe </li></ul></ul>
  • 48. Video Streaming <ul><li>Using Windows Media Player. </li></ul><ul><ul><li>- C:Program FilesWindows Media Playermplayer2.exe </li></ul></ul>
  • 49. Video Streaming <ul><li>Streamed file size comparison. </li></ul><ul><li>- C:WINDOWSEXPLORER.SCF </li></ul><ul><li>Unstreamed *.AVI file = 155,290 KB </li></ul><ul><li>RealMedia Streamed file *.RM = 483 KB </li></ul><ul><li>Windows Media Streamed file *.ASF = 1,283 KB </li></ul>
  • 50. Video Streaming Statistics
  • 51. Video Streaming Statistics
  • 52. Video Streaming <ul><li>Live feed Video Capture. </li></ul><ul><ul><li>- C:Program FilesLogitechLogitech QuickCam QuickCam .exe </li></ul></ul><ul><li>Stream from live feed. </li></ul><ul><li>- C:Program FilesREAL RealProducer realprod .exe </li></ul><ul><li>- C:Program FilesWindows Media ComponentsTools NsRex .exe </li></ul>
  • 53. Audio/Video Streaming Summary <ul><li>Capture Audio/Video </li></ul><ul><ul><li>Create your file </li></ul></ul><ul><li>Install the streaming software </li></ul><ul><ul><li>Windows Media Tools http://www. microsoft .com/windows/ windowsmedia / </li></ul></ul><ul><ul><li>RealProducer 7 Basic http://www. realnetworks .com/products/ </li></ul></ul>
  • 54. Audio/Video Streaming Summary <ul><li>Play the Audio Stream File </li></ul><ul><ul><li>Windows Media Player 6.4 </li></ul></ul><ul><ul><li>http://www.microsoft.com/windows/windowsmedia/ </li></ul></ul><ul><ul><li>RealPlayer 7 Basic </li></ul></ul><ul><ul><li>http://www.real.com/player/index </li></ul></ul>
  • 55. Questions and Answers

×