Digital video has replaced analog as the method of choice for making and delivering video for multimedia

Analogue video is essentially a product of the television industry and therefore conforms to television standards

Light reflected from an object through the camera’s lens is converted into electronic signal by chargecoupled device (CCD)

Component analog video

Blue screen in digital video editing applications is a popular technique for making multimedia

When preparing video for CD-ROM distribution, interleave the audio track(s) with the video track. (flattening)

Digital video eliminates the image-degrading analog-to-digital conversion

recorded and played as an analog signal

contains three channels of color information and synchronization pulses (sync)

substantially reduce the size of video files, which means that more video can fit on a single CD and that the speed of transferring video from a CD to the computer can be increased

Quicktime (.mov)

Audio Video Interleaved(.avi)

Motion Pictures Expert Group (.mpg)

National Television Standards Committee (NTSC)

Phase Alternate Line (PAL)

Composite analog video

Wide panoramic shots and camera motion should be avoided when shooting for a small computer window on CD-ROM or the Web

Import video and sound at the highest resolution and with the least amount of compression possible

Key frames should be used every 10 to 15 frames and the size of the video window must be kept small

CD-ROMs provide an excellent distribution medium for computer-based video

Underscan occurs when computer monitors display a smaller image on picture tube

safe title area is where the image will not be affected by overscanning, even in the worst conditions

Overscan occurs when an image is larger than the standard TV screen

NTSC television uses a limited color palette and restricted luminance (brightness) levels and black levels

While producing a multimedia project, consider whether it will be played on a RGB monitor or a conventional television set

the electron beam makes two passes on the screen while drawing a single video frame

It first lays down all the odd-numbered lines, and then all the even-numbered lines, hence they are interlaced

While capturing images from a video signal, they can be filtered through a de-interlacing filter provided by image-editing applications

New tapes should always be fast-forwarded to the end and then rewound, to ensure even tape tension

Font for titles should be plain, san serif and bold enough to be easily understood

Titles for video productions can be created with an analog character generator

Some specifications include computer with FireWire connection and cables, fast processor, plenty of RAM, fast and big hard disk

Video clip stored on any mass-storage device can be played back on a computer’s monitor without special hardware

a format for encoding and playing back video files by a computer.

includes a player that can recognize and play files created for that format

Streaming audio and video starts playback as soon as enough data has transferred to the user’s computer to sustain this playback

MPEG-4 includes numerous multimedia capabilities and is a preferred standard

MPEG-7 (or Multimedia Content Description Interface) integrates information about motion video elements with their use