affected by the Broadcast Colors effect at the current settings. If you make your
background a contrasting color and temporarily select
Key Out Unsafe
or
Key Out Safe
,
the
background will be visible through affected or unaffected areas of the clip, respectively.
An unsafe level simply means that if some portions of your sequence exceed the safe
level,
they will not look as you intended when viewed on a television monitor. Here are some
guidelines for using color in movies intended for broadcast:
•
Avoid using highly saturated colors. For example, a red value of 255 used with green
and blue values of 0 will cause red to smear on an NTSC monitor.
•
Avoid pure black and pure white values. Commonly used values for black and white are
16 and 235, respectively.
•
Render a test of your sequence and play it back on an NTSC monitor to ensure that
colors are represented accurately.
Note: The output you are creating should determine whether you use this effect. Many
video cards, on output, automatically reduce luminance or saturation to safe levels.
Broadcast Locale
Specifies the type of broadcast standard you intend to use.
NTSC
(National Television Standards Committee) is the North American standard. It is also used
in Japan.
PAL
(Phase Alternating Line) is used in most of Western Europe and South
America.
How to Make Color Safe
Specifies the method of reducing the signal amplitude. Reduce
Luminance reduces a pixel’s brightness by moving it towards black. This is the default
setting. Reduce Saturation moves the pixel toward a gray of similar brightness, making it
less colorful. Key Out Unsafe makes unsafe pixels transparent. Key Out Safe makes safe
pixels transparent.
Maximum Signal
Specifies the IRE unit level above which your clip’s pixels are altered.
The range is Amplitude (IRE) from 90 to 120 IRE. A level of 100 can affect a clip
noticeably;
a level of 120 is the maximum possible IRE and is risky. The default, 110 IRE units, is
conservative.
Camera Blur
The Camera Blur effect simulates an image leaving the focal range of the camera, blurring
the clip. For example, by setting keyframes for the blur, you can simulate a subject coming
into or going out of focus, or the accidental bumping of the camera. Drag the slider to
specify a blur amount for the selected keyframe; higher values increase the blur.
Camera View
The Camera View effect distorts a clip by simulating a camera viewing the clip from
different angles. By controlling the location of the camera, you distort the shape of the
clip.
Latitude
Moves the camera vertically. The effect makes the clip appear to be flipping
vertically.
Longitude
Moves the camera horizontally. The effect makes the clip appear to be flipping
horizontally.
Roll
Rolls the camera, thus appearing to rotate the clip.
Using Help | Contents | Index Back 261
Adobe Premiere Pro Help Applying Effects
Using Help | Contents | Index Back 261
Focal length
Changes the focal length of the camera lens. Shorter lengths provide wider
views, whereas longer focal lengths provide narrower but closer views.
Distance
Sets the distance between the camera and the center of the clip.
Zoom
Enlarges or reduces the view of the clip.
