ADOBE AFTER EFFECTS 7.0
User Guide
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5 Set a value for either Speed or Source Frame. If you are using Source Frame, set at least two keyframes to time-
remap the layer.
6 If you are using Pixel Motion as your interpolation method, adjust any of the following Tuning parameters:
Vector Details Specifies how many motion vectors are created during interpolation. The more vectors you select, the
longer the rendering time. A value of 100 produces one vector per pixel. If your layer has fast-moving motion, it may
look better with lower vector detail.
Smoothing These options let you control the sharpness of the image:
• Build From One Image Lets you generate the final output from the closest single frame as opposed to the closest
two frames. This will result in a sharper image, but jerkier motion.
• Correct Luminance Changes Lets you equalize the luminance between frames before calculating motion.
• Filtering Controls the quality of the filtering used to build the interpolated image.
Note: The Extreme Filtering mode significantly increases rendering time. Since the Filtering option only affects the
sharpness of the final image, the Normal mode is recommended until you are ready for final rendering.
Error Threshold Specifies the accuracy of pixel matching from one frame to the next. A higher value results in fewer
motion vectors and more blending.
Note: If you see edge tearing in your image, try increasing the Error Threshold for more blending. If your image has heavy
grain, try decreasing the Error Threshold so the low-level motion of the grain will be ignored.
Block Size Adjusts the size of the blocks used to calculate the vectors.
Weighting Controls the ratio of red, green, and blue channels used in analyzing an image. Since images are analyzed
based on brightness, changing the channel weight can affect the results. For example, setting the Red Weight and
Green Weight to zero means only the blue channel will be analyzed for motion.
7 To enable motion blur, select Enable Motion Blur and then adjust any of the following options:
Shutter Control Specifies whether you want to adjust the shutter angle manually or have After Effects do it automat-
ically.
Shutter Angle Adjusts the intensity of motion blur. The shutter angle is measured in degrees, simulating the
exposure allowed by a rotating shutter. The shutter angle uses the footage frame rate to determine the simulated
exposure. For example, typing 90˚ (25% of 360˚) for 24 fps footage creates an effective exposure of 1/96 of a second
(25% of 1/24 of a second). Typing 1˚ applies almost no motion blur, and typing 720˚ applies a high degree of blur. By
default, the shutter angle is set to 180˚.
Shutter Samples Controls the quality of the motion blur. A higher value results in a smoother motion blur.
8 To apply matte options, adjust any of the following:
Matte Layer Specifies a layer to use as a matte for defining the foreground and background areas of an image. White
areas in the matte represent the foreground, black represents the background, and gray attenuates between
foreground and background.
Matte Channel Specifies a color channel to use as a matte. Options are Luminance, Inverted Luminance, Alpha, and
Inverted Alpha.
Warp Layer Allows you to apply the motion vectors from the current layers onto a layer selected for Warp Layer.
Applying motion vectors from one layer to another essentially warps one image with the motion from another.
Show Controls the portion of the layer to be time-remapped.
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