Streaming Media From the Web and other alternative deliveries

1
Streaming Media From the Web(and other
alternative deliveries)

• The technicals , the processes, the formats, and
  the reasons

2
Where are we going today

• Digital Sound
• Compression and CODECs
• The Formats
• Web Delivery
• Local Delivery, including PPT
• Supporting your original music
• The future of music delivery

3
Digital sound In the beginning

• Analog where (almost) everybody starts
• Recording in analog and converting, vs. recording
  in digital
• Production scenarios MIDI, sampling,
  performance recording, controlling quality
• Issues of analog quality
• Duplication source quality
• Digital converters
• Live
• stand-alone,
• Integrated into recorders
• Computers
• Internal sound cards
• External/interface

4
Digital Sound the parameters

• Digital quality issues
• Sample rates, in bits per second (Hz)
• 44,100 Hz CD quality
• 48,000, 96,000, and the implications of DVD
• Bitrate
• 16 bit CD quality
• 20 bit, 24 bit
• What is your REAL bit rate?
• File size and streaming delivery
• Computing your size
• Computing your delivery

44,100 X 16 X 2 1,411,200 bites per second
1.34 megabites per second
5
Compression and CODECs

• Lossless compression
• Zip, Stuffit (no streaming here!)
• Lossy compression
• Reducing sample rate, bit rate
• Source concerns speech, music, mixed
• Masking, and other perceptual codings requires
  the use of a format which standardizes on the
  encoding and decoding.

6
The Formats

• Non-proprietary
• WAV (no compression beyond bit rate and sample
  rate control)
• MP3
• Proprietary
• Real (Helix Producer from Real.com)
• Quicktime
• Windows Media
• Proprietary and MP3 use scalableperceptual
  encoding

7
The Formats - Software

• Playing the formats
• MP3 (MPG) and WAV all players
• Real RealOne player
• Quicktime QuickTime Player
• Windows Media Windows Media Player
• Encoding the formats
• WAV not required
• MP3 almost all independent encoders/sound
  software
• Quicktime Quicktime Pro (30)
• Real Real Helix Producer (free)
• Windows Media Windows Media Player, Windows
  Media Encoder (both free)
• Serving the formats (more later)

8
Web Delivery on the cheap

• Crude delivery
• Simple web server/links
• Embedding the player
• Auto-start and other web page sillinesses
• Does it stream?
• Crude delivery issues
• Platform
• Proprietary client-side players
• File size vs. quality
• Security

9
Web Delivery true streaming

• Advantages of using a media server
• Error correction, packet size, channel use, and
  other geek stuff
• MultiStreaming
• Security
• Disadvantages
• Technical support
• Dedicated servers
• Supported server software
• RealServer (Basic is free)
• Windows Media (included with web server software)
• QuickTime (open source - free from Apple)

10
Local Delivery

• CD Production
• Music CD
• MP3 CD
• Computer/LAN delivery
• File size (storage capacity of media)
• Network capacity
• Embedding in PowerPoint
• File size and transportability
• File management
• File relative pathway problems

11
Supporting Your Original Music

• CD Production
• Graphics
• CD duplication
• MP3.com
• eBay.com
• Garageband.com
• Your own webspace

12
The Future of Music Delivery

• What do we mean by intellectual property?
• Who gets the money?
• The implications of Napster, Kazaa, and its ilk
• Sony.com and Apple.com pay per download
• XM and satellite delivery
• Who makes the playlists? Whats happening to
  radio stations?

13
and thanks for your attention!

• Jeffrey L. Jones, District Technology Resource
  Teacher
• Fayette County Public Schools
• jeff_at_freedomseas.net
• http//www.freedomseas.net
• The Long Way Round now available on CD! Only a
  few left! Hurry just a few more shopping days
  until Christmas!