Video Production

1
Video Production

• Unit 3

2
Introduction

• The Video Production Technology prepares students
  to work in various aspects of broadcast and
  non-broadcast video production.
• basic video production functions used in
  commercial, educational, and industrial settings
• basic audio production functions required in the
  production of video
• complex videotape editing principles and
  applications used in fully scripted and loosely
  structured events
• communications, both oral and written
• handling interaction in order to solve problems
  and give creative criticism

3
Introduction to the Basics

• Video
• Video generally refers to products which can be
  displayed on standard NTSC (National Television
  Standards Committee) monitors (Pal in Europe).
• This means TV or a monitor with a baseband audio
  and video connection.
• Using NTSC video means that video is played on an
  analog source.

4
Introduction Cont

• The signal type is carried by the audio/video RCA
  type jacks in VCR or camcorders.
• Baseband video is the video-only information
  before it is overlaid onto he radio frequency
  carrier wave provided by cable TV or broadcast TV.

5
NTSC Video

• NTSC video is substantially different from a
  standard computer video.
• All CRTs produce images by shooting electron
  beams at a screen which is coated with
  phosphorescence.
• The phosphor dots are excited and give off light.
• The Beams trace lines left to right across the
  screen and turn on dots to provide the pattern.
• The glowing dots fade quickly so the trace has to
  be repeated to give the appearance of a
  continuous image.

6
NTSC Video Cont

• Computer monitors trace the lines from top to
  bottom in succession and then repeat, which is
  usually done 60 times per second.
• TV screens are scanned in the same left to right
  motion starting at the top. The odd numbered
  lines are created first and then the all the even
  numbered lines are created. This is called
  interlacing. This makes a field/frame rate which
  of 30 times per second, for a total of 60 fields
  per second, or 30 frames per second.

7
NTSC Video Cont

• It is this field/frame rate which must be
  considered when editing video and when creating
  and moving computer based images to video.
• Moving NTSC video to computers requires a NTSC to
  VGA capture card.

8
Videotape

• Videotape had been the standard way of recording
  video information since the early days to TV.
  This information is analog.
• When using HiFi (High Fidelity), means that the
  video is taken in a format which interleaves or
  embeds the audio within independent tracks, it
  cannot be edited independently of the video.

9
Digital Video

• Digital video is a type of video recording system
  that works by using a digital, rather than
  analog, representation of the video signal.
• Digital video is most often recorded on tape,
  then distributed on optical discs, usually DVDs.
• There are exceptions, such as camcorders that
  record directly to DVDs, Digital8 camcorders
  which encode digital video on conventional analog
  tapes, and camcorders which record digital video
  on hard disks.

10
Video Editing

• Editing videotape requires identification of
  sequences on one or more source videotapes, and
  copying them in the correct sequence onto a new
  master tape. The is the old school style.
• In recent years digital video has moved onto the
  market replacing analog video.
• This makes life a lot easier, and clips can be
  edited directly on your home computer.
• It allows for very specific editing, down to each
  frame. It also allows you to manipulate the
  video, by incorporating titles, and effects
  directly to the clip.
• This can all be done with windows movie maker,
  which comes with all versions of Windows XP