Web Basics

1
Web Basics

• Multimedia II
• Sound,Video, Java Applets and more on the Web

2
Sound File Formats

• WAV - de facto standard for music and sound in
  Microsoft Windows
• supports mono/stereo, 16 or 8 bit
• different sampling rates
• AU - developed for digital sound on Unix
  platforms
• used as the standard format in Java
• MIDI - Musical Instrument Digital Interface
• standard protocol to communicate music (1983
  onwards)

3
Inserting Sounds into HTML
ltEMBED SRC"music.wav" WIDTH"150" HEIGHT"60"
CONTROLS"TRUE" LOOP"TRUE"gt

• The only standard tag in HTML at the current time
  to include sound that will function in the main
  Browsers

EXAMPLE CLICK HERE
4
Video File Formats

• AVI - Audio Video Interleave
• Windows format !
• Single track for video and audio
• QuickTime
• Developed by Apple
• Multiple tracks for video and sound but has to be
  reduced to a single video and audio to work in
  Windows.
• MPEG - Motion Picture Experts Group
• MPEG2 is used by DVDs (Uses the same lossy
  compression system as used in JPEG still images)

5
Inserting Video into HTML
ltEMBED SRC"video.avi" WIDTH"160" HEIGHT"150
CONTROLS"TRUE" LOOP"FALSE"gt

• The only standard tag in HTML at the current time
  to include sound that will function in the main
  Browsers

EXAMPLE CLICK HERE
6
Streaming Audio and Video

• Developed by RealNetworks
• RealVideo
• RealAudio
• Video/Audio is broadcast by a server on the
  network. End users turn in by choosing the
  correct address.

REALNETWORK LINK
7
Java Applets

• Self contained programs that execute or run
  inside the Browser
• Written in the programming language Java
• HTML structure used to include Applets

ltAPPLET CODE"first" WIDTH"100"
HEIGHT"200"gt ltPARAM NAME"IMAGE"
value"picture.gif"gt ltPARAM NAME"DATE"
value"01/01/2000"gt lt/APPLETgt
JAVA EXAMPLE LINK
8
Shockwaves

• Web versions of Macromedia programs
• Authorware
• Director
• Flash
• Easier to develop than Java
• Browsers require a pluggin

EXAMPLE 1
EXAMPLE 2