User Manual

and whatever blanking intrudes into the image is output along with the image, on
the assumption that you’ll have dedicated compositing artists deal with eliminating
this blanking by filling in the missing image data in a more sophisticated manner.
You may also leave this checkbox turned off if you’re planning on animating the Input
Sizing Zoom parameter to dynamically zoom into and out of a shot being stabilized to
eliminate blanking only where it occurs, using only as much zooming as is necessary for
each region of the shot.
 Cropping Ratio: This value limits how hard the stabilizer tries to stabilize, by dictating
how much blanking or zooming you’re willing to accept in exchange for eliminating
unwanted motion. A value of 1.0 results in no stabilization being applied. Progressively
lower values enable more aggressive stabilization. Changing this value requires you to
click the Stabilize button again to reanalyze the clip.
 Smooth: Lets you apply mathematical smoothing to the analyzed data used to stabilize
the clip, allowing camera motion in the shot while eliminating unwanted jittering. Lower
values perform less smoothing, allowing more of the character of the original camera
motion to show through, while higher values smooth the shot more aggressively.
Changing this value requires you to click the Stabilize button again to reanalyze the clip.
 Strength: This value is a multiplier that lets you choose how tightly you want to use
the stabilization track to eliminate motion from a shot using the current analysis. With
a value of 1, stabilization is maximized. Since some clips might look more natural with
looser stabilization, choosing a number lower than 1 lets a percentage of the original
camera motion show through. Zero (0) disables stabilization altogether. As an additional
tip, you can invert the stabilization by choosing –1 when pasting a stabilization analysis
from another clip to perform a match move based on the overall motion of the scene,
and you can use a negative value either lower than 0 or higher than –1 to under or
overcompensate when inverting the stabilization, simulating the effects of parallax
where foreground and background planes move together but at different speeds.
Retime and Scaling
The Retime and Scaling group has four parameters that affect retiming quality and clip scale:
 Retime Process: Lets you choose a default method of processing clips in mixed frame
rate timelines and those with speed effects (fast forward or slow motion) applied to
them, on a clip-by-clip basis. The default setting is “Project Settings,” so all speed
effected clips are treated the same way. There are three options: Nearest, Frame Blend,
and Optical Flow, which are explained in more detail in the Speed Effect Processing
section of Chapter 42, “Speed Effects.”
 Motion estimation mode: When using Optical Flow to process speed change effects or
clips with a different frame rate than that of the Timeline, the Motion Estimation pop-up
lets you choose the best-looking rendering option for a particular clip. Each method
has different artifacts, and the highest quality option isn’t always the best choice for a
particular clip. The default setting is “Project Settings,” so all speed effected clips are
treated the same way. There are several options. The “Standard Faster” and “Standard
Better” settings are the same options that have been available in previous versions
of DaVinci Resolve. They’re more processor-efficient and yield good quality that are
suitable for most situations. However, “Enhanced Faster” and “Enhanced Better”
should yield superior results in nearly every case where the standard options exhibit
artifacts, at the expense of being more computationally intensive, and thus slower
on most systems. The Speed Warp setting is available for even higher-quality slow
motion effects using the DaVinci Neural Engine. Your results with this setting will vary
according to the content of the clip, but in ideal circumstances this will yield higher
visual quality with fewer artifacts than even the Enhanced Better setting.
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