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Chapter 7 - Video

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Chapter Objectives

Explain the difference between analog and digitalvideo

List several uses of video on the Web

Describe the roles and responsibilities of video

specialists

Explain the factors that determine video quality

Identify several sources of digital video

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Chapter Objectives

Describe the pre-production, production, and post-production processes

Explain the difference between destructive and non-

destructive video processing

List and describe several key video editing programs

List and describe several of the more common video

file formats

Define compression and describe some of the mostcommonly used video codecs

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Introduction

Power to communicate with motion and soundVideo editing technology is now affordable to the

masses

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Types of Video

AnalogStill used

Wide abundance of equipment

Tape Videodiscs/Laserdiscs CAV v. CLV

Video-capture cards

Convert analog signal to digital signal Connect camcorder, VCR, TV, live feed

Different CODECs

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Analog Formats

VHSS-VHS

Hi-8Betacam SP

LiveFeed

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Digital Video

DVDigital Video

Camera

FireWire

IEEE 1394

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Digital Formats

D1, D2, D3DV

LiveFeed

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Uses of Video

Online Training and EducationAdvertising and E-commerce

Entertainment and Games

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Video Specialists

VideographerVideo Editor

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Video Standards

NTSCPAL

SECAMHDTV

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Digital Video Sources

Stock video footageClip video

Record your own

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Producing Video

Pre-productionStoryboards

Scripts

FlowchartsProduction

Capture

Post-productionEdit, Composite, Process

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Standard Timecode

SMPTEMeasures video in hours, minutes, second, frames

Used to synchronize video components

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Delivery

DownloadedStreamed

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Digital Video Software

AdobeApple

Avid

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Premiere Non-linear editing

Cross-platformOpen architecture

Supports a variety of formats

Nondestructive editing

After Effects Compositing

Unlimited layers of movingand still images

Motion packs, mattes, special

effects

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AppleQuickTime Pro

Time-based

Cross-platform

Supports variety of formats and CODECs

Variety of visual effects

iMovieTrim, synchronize, and reorder clips

Final CutEditing and compositing in one package

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Avid

XpressCross platform

Editing and compositing

Media Composer

High-end standard for Web, TV, Film

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Digital Video File Formats

AVI (Audio-Video Interleave)MPEG

MOV (QuickTime)

Real (RM)

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Compression

Video files are hugeOne second can require up to 30 MB of storage

Data transfer rate (dtr)

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CODECs

AnimationCinepak

Indeo

Sorenson

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