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Frame blending slows previewing and rendering. To speed things up, you can apply frame blending without using it
to redraw or render. The Quality setting you select also affects frame blending. When the layer is set to Best quality,
frame blending results in smoother motion but may take longer to render than when set to Draft quality. You can
also enable frame blending for all compositions when you render a movie.
When working with a frame-blended layer in draft mode, After Effects will always use Frame Mix interpolation to
increase rendering speed.
See also
"Time-stretching" on page 231
"About time-remapping" on page 233
"Using motion blur" on page 170
"To change render settings" on page 604
To apply frame blending to a layer
Select the layer in the Timeline panel.
1
2
Do one of the following:
•
Choose Layer > Frame Blending > Frame Mix.
•
Choose Layer > Frame Blending > Pixel Motion.
A check mark by the appropriate Frame Blending command (Frame Mix or Pixel Motion) indicates that it is applied
to the selected layer. Also, the Frame Blending switch
panel. Remove frame blending either by clicking the Frame Blending switch or by choosing the appropriate Frame
Blending command again.
To enable or disable Frame Blending for previewing and rendering
❖
Select Enable Frame Blending from the Timeline panel menu, or click the Enable Frame Blending button
the top of the Timeline panel.
To apply the Timewarp effect (Pro only)
The Timewarp effect gives you precise control over a wide range of parameters when changing the playback speed
of a layer, including interpolation methods, motion blur, and source cropping to eliminate unwanted artifacts. The
Timewarp effect works independently of the Frame Blending switch in the Timeline panel.
1
In the Timeline or Composition panel, select a layer.
Choose Effect > Time > Timewarp.
2
In the Effect Controls panel, choose an interpolation method for Method:
3
Duplicates the last frame shown.
Whole Frames
Creates a new frame by interpolating existing frames.
Frame Mix
Creates a new frame by analyzing the pixel movement in nearby frames and creating motion vectors.
Pixel Motion
For Adjust Time By, specify whether to adjust time by Speed or Source Frames. Choose Speed if you want to
4
specify a time adjustment as a percentage (for example, 200% or 25%). Choose Source Frame if you want to specify
a time adjustment by identifying which source frame is to play at which time (for example, frame 100 of the time-
remapped clip should play frame 50 of the original clip).
appears in the Switches column for the layer in the Timeline
ADOBE AFTER EFFECTS 7.0
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