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. You can use the Timewarp
effect to create simple slow-motion or fast-motion results or more complex
retiming. The Timewarp effect works independently of the Frame Blending
switch in the Timeline panel.
note: The Timewarp effect does not
work on fields for interlaced footage. To use the Timewarp effect
on a layer with an interlaced footage item as its source, double
the frame rate in the composition settings. When you render to final
output, modify your render settings in the Render Queue panel to
set the frame rate appropriate for the output type.
Timewarp effect is based on Kronos, a component of the Furnace software package
from The Foundry. For detailed documentation on motion vectors and motion
estimation parameters, see the Furnace documentation (in PDF) on
the Foundry website.
works with 8-bpc and 16-bpc color. In After Effects CS6, this effect works
in 32-bit color.