multimedia video

DCA 50272
MULTIMEDIA PRDUCTION

MULTIMEDIA ELEMENTS (VIDEO)

NAME: NURUL SYARAFANA BINTI KAMARULZAMAN (F1002)
SITI NOOR FATIMAH BINTI ABDUL MANAP (F1042)
NUR HIDAYAH BINTI RUSLI (F10)
LECTURER NAME: SIR SARVINDER SINGH
ENCIK SHAHRIN BIN SHAFIE

INTRODUCTION OF VIDEO

• A product of recording moving images by using a camera or video machine.
• Provides a powerful impact in a multimedia program
• An effective way to present information that cannot be delivered by any other

media because it can convey meaning and information in a relatively short
period of time.
• Capable of bringing elements that resemble actual situations, attract the users’
attention and emotions.

PURPOSE OF USING VIDEO (I)(II)

• Video is an excellent tool for delivering multimedia.
• Video places the highest performance demand on computer and its memory and storage.
• Digital video has replaced analog as the method of choice for making and delivering video for

multimedia.
• Digital video device produces excellent finished products at a fraction of the cost of analog.
• Digital video eliminates the image-degrading analog-to-digital conversion.
• Many digital video sources exist, but getting the rights can be difficult, time-consuming and

expensive.

SOURCES OF VIDEO

❑ Laser Disc
❑ Camcorder

BETACAM SONY BVW- VIDEO CASSETTE
D600P RECORDER (VCR

VIDEO CONCEPT

• Video is an excellent tool for delivering multimedia.
• Video places the highest performance demand on computer and its memory and

storage.
• Digital video has replaced analog video as the method of choice for making and

delivering video for multimedia.
• Video Concept Digital video device produces excellent finished products at a

fraction of the cost of analog. Digital video elimina
• es the image-degrading analog-to-digital conversion.
• Many digital video sources exist, but getting the rights can be difficult, time-

consuming, and expensive.

ANALOGUE VIDEO

• Video information that is stored using television video
signals, film, videotape or other non-computer media
Each frame is represented by a fluctuating voltage signal
known as an analogue wave form or composite video.

• Analogue Video Composite analogue video has all the
video components: - brightness, color and
synchronization.

• Then combined into one signal for delivery Example:
traditional television signal 22: 215 33.36. 22: 215
3.3.36 DIGITAL ANACOGUE

VIDEO DISPLAY

• Progressive scan: used in computer monitors and digital televisions.
• displays all the horizontal lines of a picture at one time as a single frame.
• Interlaced scan: used in standard television formats displays only half of the

horizontal lines at a time (the first field, containing the odd-numbered lines, is
displayed, followed by the secone field, containing the even-numbered lines)

DIGITAL VIDEO

•Digital video is the digitization of analogue video signals into numerical format.
•It creases the illusion of full motion by displaying a rapid sequence of changing
images on a display device.
•Conversion from analogue to digital format requires the use on an ADC(Analogue
to Digital Converter)
•A digital to analogue Converter (DAC) can be used to output digital video on
analogue equipment.
•Video clip stored on my mass-storage device can be played back on a computer

monitor without special hardware
•Setting up a production environment for making digital video, requires some

hardware specifications
•Some specifications include computer with fire wire connection and cables, fast

processor, Plenty of RAM, fast and big hard disk.

DIGITAL VIDEO

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

• Setting up a production environment for making digital video,
requires some hardware specifications

• Some specifications include computer with fire wire
connection and cables, fast processor, Plenty of RAM, fast and
big hard disk.

FILE SIZE AND FORMATS

•There is an important consideration:
-File size in digitizied video which included
1.Frame rate
2.Image size
3.Colour depth

1.Frame rate

-Animation is an illusion caused by the rapid display of still images.
-Television and movies play at 30 fps but acceptable playback can be achieved with

15 fps
2.Image size
-A standard full screen resolutions is 640 x 480 pixels but to safe storing space a

video with 320 x 240 for computer display is still acceptable.
-New high-definition television (HDTV) are capable of resolutions up to 1920 x

1080p60
- 1920 pixels per scan line by 1080 scan lines,progressive at 60 frames per
second
•3.Colour depth
-The quality of video is dependent on the colour quality (related to the number
of colour) for each bitmap in the sequence.
-The colour depth below 256 colours in poorer-quality image
-The frame rate to below 15 fps Causes a noticeable and
distracting jerkinss that unacceptable.
- Changingthe image size and compressing the file therefore become primary ways
of reducing file size

VIDEO COMPRESSION

Two types of Compression:
• Lossless compression

i. Preserves the exact image throughout the compression and decompression process.
ii.E.g:Text images is to identify repeating word and assign them a code.
• -Lossy compression.
• •Eliminates some of data in the image and therefore provides grates compression rations
than lossless compression.
• •Apllied to video because some drop in the quality is not noticeable in moving images.

FILE FORMATS

1.AVI format
-The AVI format,Which stands for audio video interleave,was developed by
Microsoft.The Some of the most common players that support the avi format
are:
- Apple quick player ( windows & Mac),Microsoft windows media player
,Video Lan VLC media player And NUllSOft Winamp

FILE FORMATS

2. Quicktime format
- The quick time format was developed by Apple and is a very common one.It is

often used on the interned and for saving movie and video files.
- The format Contains one or more tracks storing video,audio,text or effects.Its
is compatible with both Mac or Windosw platform and can be played on a an
Apple Quicktime player.

FILE FORMATS

• MP4 Format (.mp4)
This format is mostly used to store audio and visual streams online, most commonly those
defined by MPEG. It expands MPEG-1 to support video/audio “objects”, 3D content, low nit
rate encoding and support for Digital Rights Management.

• The MPEG-4 video format uses separate compression for audio and video tracks; video is
compressed with MPEG-4 video encoding; audio is compressed using AAC compression,
the same type of audio compression used in .AAC files.

• The mp4 can most commonly be played on the Apple Quick Time Player or other movie
players. Devices that play p4 are also known as mp4 players.

FILE FORMATS

STREAMING VIDEO
1) Windows Media video format (.wmv)
2) 3gp File Extension (.3gp)
3) Apple Quick Time Player
4) RealNetworks RealPlayer
5) VideoLAN VLC media player
6) Advances Streaming Format (.asf)
7) Real Media Format (.rm)

SPECIAL EFFECTS

Transitions
• Fade In/Out
• Dissolves
• Wipes
• Whip Pan
• Zoom

Chroma Key
▪ The ability to superimpose one clip over

another is a valuable technique
▪ The technique of green screening is identical

except that the colour green is used for the
screen and later digitally removed.
▪ The blue screen and green screen
superimposing are just two of the
superimposing technique available.

VIDEO HARDWARE

VCR MULTIMEDIA PC

VIDEO SOFTWARE

Video Capture Card Video Overlay Board Video Digital Editing Software

ADVANTAGES OF USING VIDEO

• Captures interest
• Increase retention
• Clarifies complex physical actions and relationship
• Can incorporate other media

DISADVANTAGES OF USING VIDEO

• Is expensive to produce
• Requires extensive memory and storage
• Requires special equipment
• Does not effectively illustrate abstract concepts and static

ssituations

EXAMPLE VIDEO