This document discusses digital video data sizing and object based animation. It explains that digital video requires a large amount of storage, with a one minute video at 640x480 resolution and 24-bit color requiring over 1.6 GB of storage. The size of a digital video stream can be calculated based on frame size, frame rate, color depth, and time. To reduce file sizes, these characteristics like frame rate and size can be decreased. The document also describes how digital video is captured and played back using hardware and software, and how object based animation works by manipulating 2D or 3D objects over time to create the illusion of motion.

1. DIGITAL VIDEO DATA SIZING AND
OBJECT BASED ANIMATION
S.Nandhini
II-MSC(CS&IT)
Nadar Saraswathi College Of Arts And Science
Theni

2. DIGITAL VIDEO DATA SIZING
 The amount of storage needed to capture and manage
digital video can be staggering.
 Graphic image that is 640 by pixels with bit color requires
nearly one megabyte for storage
 One minute requires nearly 1,620 mega bytes.

3. CALCULATING THE SIZE OF A DIGITAL VIDEO
STREAM
Calculate the size of a value data stream
f=frame size(width*height)
r=frame rate(frames per second)
c=color depth(in bytes)
t=time in seconds
Raw video data size=f*r*c*t

4. Managing Digital video file size
To reduce the amount of data down to a manageable level
we must one or more of the video characteristics
 frame rate
 frame size
 color depth

5.  Reduce the frame rate to 15 frames per second and the frame
size to 320 by 240 pixels
Height times width:320 pixels times 240pixels=
76,800 total pixels per frame X 3 bytes per pixel=
230,400 total bytes per frame X 15 frames per second=
3,456,000 total bytes per second times 60
seconds=207,360,000 bytes

6. VIDEO CAPTURE AND PLAYBACK SYSTEM
 Digital video is based on a combination of hardware and
software to capture,store,edit, and play back digital video
 Video source such as a camera or video cassette
recorder(VCR) capable of producing NTSC,PAL, or other
compatible video signal

7. Analog to Digital Converter:
 Converting the analog video stream into a digital video
stream.
 The digital video stream is a series of bits and Bytes that
represent the images from a video source.
Audio capture circuitry:
Sound capture device the operates
concurrently with the video capture system.

8. VIDEO CAPTURE WITH HARDWARE
Video source
Analog to digital
converter
Audio capture
circuitry
Hardware
compression
chip
Data
storage
Video
in
Audi
o in

9. VIDEO CAPTURE WITHOUT COMPRESSION
Video source
Analog to digital
conventor
Audio capture
circuitry
Data storage
Video
in
Audio
in

10. DIGITAL VIDEO SOFTWARE
Digital video software they are two approaches
 Each application that depends on digital video
responsible for all aspects of controlling video capture
hardware,compression,and playback
 Software drives within the operating system the video
capture,compression,and playback.
 Digital video software comes in the basic forms
video capture
video editing
video playback for application

11. COMPUTER ANIMATION
The use of the computer generated ages to convey
motion. Digital video is based on capture video from
a camera
 Creating a series of still images that can be store
Rapidly creating a sense of motion.
 Manipulating and moving an object along a vector
path.
 Storing animation information in a data file for
Playback.

12. CREATING ANIMATION
 The previous image with a minute change that over time
and rapid playback presents an illusion of by the content
of the segment.
 Animation software tools enable developers to rapidly
build a succession of images by group objects and
managing backgrounds.

13. OBJECT BASED ANIMATION
Creating animation is the two or three dimensional
representations of real –world objects.
Objects can be manipulated by modifying the behavior of the
elements within the object

14. THANK YOU