Apple Motion 3 User Manual
Page 227
Chapter 2
Creating and Managing Projects
227
Frame Rate: Choose a frame rate in frames per second that matches the clip’s native
rate. For example, film is 24 fps, PAL video is 25 fps, and NTSC video is 29.97 fps.
Additional frame rates are available for different video formats. If the frame rate you
require is not listed, you can type a number in the text field to the right of the pop-up
menu.
Note: Project frame rates are determined by the project preset. To edit a preset or to
create a new preset, choose Motion > Preferences and use the options in the Presets
pane.
If you change a QuickTime file’s frame rate, you can choose “From file” at the bottom of
the Frame Rate pop-up menu to change this parameter to the QuickTime file’s original
frame rate.
Note: While you can freely mix clips using different frame rates, clips playing at a frame
rate different from that of the project may not play smoothly.
Crop: A multidimensional parameter that defines a number of pixels to be cropped
from each of an object’s four sides, relative to the outer edge of the bounding box that
surrounds that object. Cropping an object in the Media tab also crops all instances of
that object that appear in your project. A similar Crop parameter appearing for objects
in the Layers tab allows you to individually crop each instance of that object. For more
information, see “
Parameters in the Properties Tab
Timing: These parameters control the start, end, and duration of each media object.
 In: Sets the In point of the object, in both constant and variable speed modes.
Adjusting this parameter always moves the object In point to the specified frame
without affecting the duration of the object.
 Out: Sets the Out point of the object, in both constant and variable speed modes.
Adjusting this parameter always moves the object Out point to the specified frame
without affecting the duration of the object.
 Duration: Sets the total duration of the object. If Time Remap is set to Constant
Speed, adjusting Duration will also affect the Speed and the Out point. If Time
Remap is set to Variable Speed, adjusting Duration will not affect variable speed
playback.
Linked Objects: This list displays all objects that appear in the Layers tab that have a
relationship to that object. Two columns display the name of each layer containing an
instance of the source media, along with the object’s name. Changing an object’s name
in the Layers tab automatically updates the name that appears in the corresponding
object’s Linked Objects list.