Adobe Photoshop 7.0 Design Professional

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Chapter Concepts

• OVERVIEW

• Discuss the Use of Video on the Web
• Discuss the Different Types of Video
• Analyze the Factors That Determine Video Quality

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Chapter Concepts

• OVERVIEW

• Examine Digital Video Sources and Production
• Explore Video Editing Software
• Discover Digital Video File Formats and Codecs
  for the Web

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Introduction

• INTRODUCTION

• Video images are combined to convey a desired
  message just as words are used to create
  sentences, paragraphs, and stories
• With desktop tools, users can manipulate video
  and create high-quality images at a fraction of
  the cost of professional equipment

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Introduction

• INTRODUCTION

• Inclusion of video on Web pages requires broader
  bandwidth
• Video can be exported in a wide range of Web
  formats using a number of different compression
  schemes designed to make the file small for
  easier online delivery

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Discuss the Use of Videoon the Web

• CONCEPT 1

• Video is effective because multiple senses
  involved enhances learning
• Many companies use video to train and retrain
  their employees
• Training videos can be quickly updated as
  technology changes

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Discuss the Use of Videoon the Web

• CONCEPT 1

• Video often used in education because it
  accommodates different learning styles
• Web sites designed to entertain are more likely
  to include video clips than are other types of
  sites

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Analog Video

• CONCEPT 2

• Analog video is generally linear it has a
  beginning, a middle, and an end and is recorded
  as a signal
• Because videotape is linear, you must either
  fast-forward or rewind to get to the video
  segment you are interested in viewing or
  digitizing

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Analog Video

• CONCEPT 2

• Videodiscs or laser discs also use analog
  technology however, unlike videotape, they do
  provide a random access feature
• Before analog video can be used in a multimedia
  Web site, it must be converted to a digital format

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Analog Video

• CONCEPT 2

• Video capture cards are used to convert analog
  video to a digital format

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Analog Video

• CONCEPT 2

• Analog formats include the following
• VHS Most common video format found
• S-VHS is a higher quality format than VHS, but
  slightly lower quality than Hi-8
• Hi-8 is the highest quality analog video format
  found in the consumer market
• Betacam SP is a high-quality, analog video format
  used in professional video editing

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Digital Video

• CONCEPT 2

• Video that is already in digital format
• DV standard International standard created by a
  consortium of 10 companies for storing digital
  video
• DV cameras use a tape that stores the video and
  sound in a digital format

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Digital Video

• CONCEPT 2

• Digital formats include the following
• D1 Not suitable for video
• D2, D3 Format used for professional video
  editors and television studios
• DV Sonys digital video recording format that
  has been set as the standard by the major
  producers of digital video camera technologies

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Digital Video

• CONCEPT 2

• DVD (Digital Versatile Disc), also called Digital
  Video Disc can be used to store digital video
• Tremendous storage capacity ranging from 4.7 GB
  to 17 GB
• Can store up to 4 hours of digital video
• Quality of video on DVD is clear and sharp

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Guidelines for Using Video on the Web

• CONCEPT 2

• Use video when and where it is appropriate
• Keep your audience and delivery method in mind
  when designing video for a Web page
• Sound and Video clips should match or complement
  one another

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Guidelines for Using Video on the Web

• CONCEPT 2

• Keep video files at an appropriate size so they
  can be played on standard equipment to reach a
  wider audience
• Use high-quality video footage that lends
  credibility and a professional feel to Web site

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Guidelines for Using Video on the Web

• CONCEPT 2

• Use different characters to add interest
• Set up your video files to go with the graphic,
  animation, sound elements
• Do not overuse transitions
• Trim footage inconsistent with purpose
• Properly place and time video clips to create
  consistency

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Frame Rate

• CONCEPT 3

• Source frame rate Speed at which the video is
  recorded
• Playback frame rate Speed at which individual
  frames display
• Video is a sequence of individual images or
  frames displayed fast enough to create the
  illusion of motion

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Frame Rate

• CONCEPT 3

• For smooth and consistent playback, source frame
  rate and playback frame rate should be identical
  generally, somewhere between 15 to 30 frames per
  second (fps)
• Frames displayed at a slower rate appear choppy

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Resolution

• CONCEPT 3

• Factors that determine the resolution of video
  include
• Aspect ratio Ratio of width to height in the
  dimensions of a frame
• The frame size for playing video is expressed in
  horizontal and vertical pixel dimensions such as
  800 by 600 pixels
• Bit depth Number of bits used to describe the
  color of a single pixel

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Resolution

• CONCEPT 3

• The higher the resolution, the larger the size of
  the file
• In addition to frame rate and resolution,
  bandwidth, processor speed, memory, and monitor
  size are important considerations for Web-based
  video delivery

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Examine Digital VideoSources and Production

• CONCEPT 4

• Video Sources
• Stock video footage from a third party, such as a
  freelance videographer or stock videography
  company
• After you find the stock video footage or clip
  video for your project, be sure to carefully
  check the applicable licensing agreements

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Pre-Production

• CONCEPT 4

• Involves visualizing and sketching each scene on
  a storyboard
• Scripts serve as the story that will be told with
  the video camera
• A flowchart specifies where video will be
  included based on choices selected by the user

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Production

• CONCEPT 4

• Video footage is acquired, recorded, and
  digitized if the original video footage is not
  already in a digital form
• Import the clips into video editing program
• Specify settings frame size, output file type,
  compression format, resolution

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Post-Production

• CONCEPT 4

• Process video after it is captured
• In most video editing programs, several different
  tracks are used to store video information

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Post-Production

• CONCEPT 4

• Timecode track used to synchronize all of the
  components
• Society of Motion Picture and Television
  Engineers (SMPTE) measures video in hours,
  minutes, seconds, and frames
• Video on the Web can either be downloaded or
  streamed

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Post-Production

• CONCEPT 4

• After video has been successfully recorded,
  digitized, and processed it is ready to be
  incorporated into a Web site
• If you plan to stream the video from the server,
  you will need to post your Web site with a Web
  hosting company that supports streaming

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Explore Video Editing Software

• CONCEPT 5

• Web designers and developers can use video
  editing tools to digitize motion graphics and put
  messages and stories on the Web
• Adobe, Avid, and Apple are three well-known
  companies offering mid-range and high-end
  desktop video editing packages

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Adobe Premiere

• CONCEPT 5

• Award-winning software solutions for editing and
  compositing video for Web
• Adobe Premiere affordable, highly rated,
  non-linear, video-editing program
• Premiere based on open architecture designed to
  be compatible with numerous software programs,
  extensions, and file formats

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Adobe After Effects

• CONCEPT 5

• Compositing software program full of tools that
  can help create special effects for Adobe
  Premiere projects
• Adobe After Effects can combine an unlimited
  number of layers from files imported from a
  variety of other graphics and animation programs

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Apple Quick Time Pro

• CONCEPT 5

• Software-based, video-editing system
• Provides a comprehensive, flexible, integrated
  set of media services to creators/developers
  working with video
• Work with a variety of different audio, video,
  and image formats

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iMovie

• CONCEPT 5

• Video-editing package
• Using familiar drag and drop, copy, cut, and
  paste functions, use iMovie to trim unwanted
  footage and to arrange video clips in any
  sequence

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Apple Final Cut Pro

• CONCEPT 5

• Feature-rich, non-linear, video-editing
  application by Apple
• Can take full advantage of extensive text
  features and create innovative, professional
  quality, fully animated titles

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Avid

• CONCEPT 5

• Premier provider of digital tools for film,
  video, audio, and broadcast
• Avid offers a number of creative tools that
  enable designers and developers from around the
  world to share stories through video

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Avid Xpress

• CONCEPT 5

• Avid Xpress Complete video-editing system with a
  full set of high-performance built-in features
  for
• editing video
• managing audio
• creating real-time effects and titles
• adding graphics
• compositing

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Avid Xpress

• CONCEPT 5

• Avid Media Composer family is the worldwide
  standard for editing video, primarily for
  television and film, but also for the Web

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Windows Movie Maker

• CONCEPT 5

• Windows Movie Maker can be downloaded for free
  from Microsoft
• This video editing program is easy to use, yet
  provides many powerful capabilities that enable
  you to capture and edit video footage

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Discover Digital File Formats and Codecs for the
Web

• CONCEPT 6

• ASF (Advanced Streaming Format)
• Stores audio and video information specially
  designed to run on networks
• Content is delivered to you as continuous flow of
  data you experience little wait time before
  playback begins

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Discover Digital File Formats and Codecs for the
Web

• CONCEPT 6

• AVI (Audio Video Interleave)
• Resource Interchange File Format (RIFF) file
  Microsoft standard
• Other players, including QuickTime, will also
  play .avi files, making this format acceptable
  for delivering Web video

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Discover Digital File Formats and Codecs for the
Web

• CONCEPT 6

• MPEG (Motion Picture Experts Group)
• Developed to provide a format for delivering
  digital media to consumers
• MPEG-4 is the global multimedia standard,
  delivering professional-quality audio and video
  streams over a wide range of bandwidths, from
  cell phone to broadband and beyond

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Discover Digital File Formats and Codecs for the
Web

• CONCEPT 6

• MOV (QuickTime)
• Developed by Apple, is among the most convenient
  and powerful formats for storing common digital
  media types
• Works on any computing platform good option for
  distributing video on the Web
• Requires a plug-in or player

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Discover Digital File Formats and Codecs for the
Web

• CONCEPT 6

• RM (RealMedia)
• Leader in streaming media technologies
• Requires a plug-in or player to be heard
• WMV (Windows Media File with Audio and/or Video)
• Proprietary to the Windows operating system used
  by Windows MovieMaker

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Discover Digital File Formats and Codecs for the
Web

• CONCEPT 6

• Digital video files are huge
• Data Transfer Rate (dtr) The time it takes for
  the video to be transferred from the processor
  and displayed on the monitor
• Codecs Compression/decompression algorithms used
  to compress data

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Codecs

• CONCEPT 6

• Animation codec Developed to compress and play
  QuickTime animated movies
• Apple Cinepak Compression scheme that works well
  for CD-ROM video delivery, acceptable for Web
  delivery as well because it is cross-platform

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Codecs

• CONCEPT 6

• Indeo Intels compression scheme
• MPEG looks for changes in the image from frame to
  frame
• Sorenson codec Useful for compressing 24-bit
  video intended for CD or the Web

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Codecs

• CONCEPT 6

• DVI (digital video interleave) Intels
  proprietary compression technology
• On the Web, video will most often be displayed
  using one of three players
• Windows Media Player
• QuickTime Player
• RealPlayer

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Summary

• SUMMARY

• Discuss the Use of Videoon the Web
• Analog Video
• Digital Video
• Frame Rate
• Resolution

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Summary

• SUMMARY

• Video Sources
• Pre-Production
• Production
• Post-Production
• Explore Video Editing Software
• Discover Digital File Formats and Codecs for the
  Web