Factors that affect smoothcam scaling, About the actual scale value – Apple Final Cut Pro 6 User Manual
Page 1249
464
Factors That Affect SmoothCam Scaling
You can control how much the SmoothCam filter scales your clip in several ways,
depending on the effect you are trying to achieve:
 Reduce the Translation Smooth, Rotation Smooth, and Scale Smooth parameter
values so that less motion correction is applied. This means that there is less black
around your clip, so less scaling is required. Try to adjust these parameters to find a
balance between acceptable scaling and adequate motion compensation.
 Change your clip In and Out points to limit the SmoothCam filter to a portion of the
clip without abrupt visual changes or severe camera movement. This reduces the
amount of motion compensation that the SmoothCam filter needs to apply, so less
scaling is required. For more information, see “
Setting Clip In and Out Points
to Improve SmoothCam Rendering
 Reduce the Auto Scale parameter value to reduce scaling. Reducing the amount of
scaling will reveal black edges around your clip, but this may be acceptable in some
cases. For more information, see “
Using the Auto Scale Parameter
About the Actual Scale Value
Too much scaling can cause your clip to appear blocky or softened, so you should try
to limit scaling of your clip as much as possible. The Actual Scale value in the
SmoothCam filter informs you of the current scaling applied to your clip. The value
shown here is the result of many factors: the amount of motion compensation the
SmoothCam filter needs to apply based on the motion analysis data, the current In and
Out points, and the current value of the Auto Scale parameter.
Important:
If the SmoothCam filter requires a very large repositioning adjustment to
compensate for camera movement, the SmoothCam filter does not apply motion
compensation at all, and the Actual Scale parameter is disabled. In these cases, your
clip probably contains too much movement or too many abrupt visual changes. For
more information, see “