Download Setting up monitor with SMPTE Bars

Editing Process
– Set up Decks, Monitors
– Prepare Master Tape
– Know operation of edit controller
Laying Control Track
Insert Edit)
( To
• Fast Forward and Rewind Tape (
even- up tension on the supply hub)
• Record signal from camera, a
switcher, sync generator or another
tape.
Why Black?
•Easiest signal to edit over.
VTR Set up - Check the
following to properly set up
VTR.
–Skew
–Tracking
–Video Level
•Skew Control
–
Adjusts the tension on the tape
–
Changes from machine to machine
–
Can only be seen while in playback
–
Seen on the screen as a hooking or pulling (usually in the top left hand
corner of the picture)
•flagwaving
–
Tension problem. A Pulling across the entire frame
•Tracking
–
Adjusts the relationship between the head drum signal and the control
track pulse to get a stable playback picture.
–
Matches the frequencies of both signals
–
Can only be seen while in playback
–
Changes from machine to machine.
Video Level
•
Manual- In this mode you can control the voltage of the
incoming signal in the record mode
•
Automatic-an automatic gain control circuit assures that
you have a correct signal.
Monitor Se-Up-Check the
following to properly set up
Monitor
• Color/burst level/saturation/chroma/color intensity
• Hue/tint/subcarrier phase
• Black level adjustment/brightness
• Contrast/adjusts how bright a picture is
To properly set up a monitor
it must be on color bars
Types of Color Bars
• Full Field Bars
• Split Field Bars
• SMPTE Bars
Primary colors of Video
• Red
• Green
• Blue
Complementary Colors
• Yellow
• Cyan
• Magenta
Luminance.
• Measured level of brightness
• On color bars, the color with the highest
level of brightness is on the left, and the
color with the lowest level of brightness
on the right.
• IRE Units measure the overall luminance
level of the video signal as measured on
waveform monitor.
• 100 Brightest
Full Field Bars
Split Field Bars
• Contain I and Q signals at bottom of
screen as well as white.
SMPTE Bars
• A sample of the primary colors containing
Blue in the reverse order across the
screen, and black reference levels in the
lower right corner
• The Only way to objectively set up a color
monitor
•SMTE Color Bars
Blue Gun Only
• Ability of a monitor to turn off the red and green
guns and only display the blue gun.
• Will only display as blue, the color bars that
include blue . White, cyan, magenta and blue
• Will display as black the bars that do not include
blue: yellow, green, red, and black
Setting up monitor with
SMPTE Bars/ Blue only
• Brightness-Use the three black bars in the lower right corner.
These bars range = or - 3.75 IRE from the setup level of 7.5 IRE (
Black level) The left bar is lower and the right is brighter. Adjust
brightness until so that the right bar becomes slightly visible, while
the other two remain indiscernible.
•
Contras- Adjust the contrast and watch the white until it stops
getting brighter or begins to bloom.
• Color and Hue- Adjust the color so that the colors of the far left and
right blue bars match with those of the chroma set bars located
directly below them. Adjust the tint so that the colors of the near left
and right blue bars match with those of the chroma set bars located
directly below them.
Setting up Monitor split field
bars and blue filter
• Adjust color to minimum and then adjust brightness until black bar
stops getting darker. Adjust contrast until the white bar stops
getting brighter. Set the color control to the center or detent
position and with a blue filter adjust Hue until bars 2 and 5 are the
same brightness.
Setting up Monitor S;lit
Field bars and no blue filter
• Same Color, contras and Brightness as without filter. Adjust Hue so
that the second bar is lemon yellow and fifth bar is magenta.
Monitor set up no color bars
Adjust color to minimum and input a video picture containing black.
Adjust brightness until black area of the screen stops getting darker
and then adjust the contrast to maximum. Set the color control to
the center or detent position and input a video signal containing
flesh tones. Adjust the hue for natural skin tones.
Monitor V.S Receiver
• A monitor is designed to show exactly what the electronic video
signal looks like in picture form.
• A Receiver or television set is designed to show the best picture
possible.
• It enhances the picture
• A monitor is hooked up with direct cables from the videotape
recorder
• A Receiver uses modulated signals.
Steps to set up an edit
• Select edit mode- Insert or Assemble?
• Cue each machine to the desire frames
• Set your in and out points
• Preview- check audio and video levels
• Record edit- leave a tail on each edit ( Overlap recording)
• Check the edit
Common Functions of Edit
Controllers
•
Mark In/ Out _ When do you mark an out?
•
Preview- lets you preview edit
•
Return/ Jump- return to in point
•
Record- performs edit
•
Review- see edit made
•
Trim- used to alter an in or out point without shuttling the tape
•
Go-to- will transport your tape to a specific point.
•
Last Edit- shows you in and out of last edit.
•
Split Edit- will let you set different in for Audio than Video.
Leader should include
• Slate
• Color bars/ tone
• Countdown