Chapter 10
Video
10
Video in Multimedia
Visual motion helps
to convey realism
and movement
10
Uses of Video in Multimedia
Video enhances common applications of
multimedia.
Video simulations show procedures and interactions that
would be dangerous to perform in actuality
Games use video to simulate flight, car racing, and other action
Web sites and CD-ROMs use videos as reference material
Videoconferences enable participants to see each other and
witness demonstrations
10
Video Quality
Video quality depends on:
The resolution and clarity of individual
video frames.
The frame rate or speed at which video
frames appear. Frame rate is measured in
frames per second (FPS).
10
What is streaming video?
Streaming video refers to a technique
for transferring data so that the
browser starts displaying the data
before the entire file has been
transmitted.
10
Video File Format
A video file’s format determines:
Which programs can open and play it.
How much space it occupies on a disk.
How fast it travels over an Internet
connection.
10
Common File Formats
The most commonly used video file
formats are:
MOV (movie), also known as QuickTime
WMV (Windows media video)
AVI (audio video interleave)
MPEG compresses audio and video
10
Video Software
There are programs for
playing video and audio,
as well as editing and
distributing video.
A number of video
players are available on
the Internet for free or at
nominal cost.
Video editing software
allows you to edit video.
10
Video Hardware
Video hardware includes:
Camcorders, digital or analog, for
recording live action
Webcams, to include live, streaming
video in a Web site
Capture cards for converting analog
video to digital format
Video tuners to enable a PC to receive
and save television signals