Key Reducer

Activate the Key Reducer filter to reduce the number of keys on animation curves by setting tangents in order to keep precision of the animation.

You also can use this filter to reduce the number of keys on resampled curves, which lets you edit keys, not dense data.

Before:

After:

NoteThere is always a trade-off between the number of keys needed versus the precision of the animation. The more keys you have, the more precise the animation. The fewer keys you have, the easier it is to edit the keys, but there is less precision.

Setting	Description
Filter intensity	Generic value. A value of “1” keeps the filter intensity of the original visual result, in most cases.
XYZ Curve Synchronization	On X, Y, Z curves, this option adds keys to other curves (X,Y, or Z) at every added key. This setting increases the number of keys. It also ensures that they always exist on all three curves of the same vector (X, Y, and Z) for each key over time. Note Game engines often require this for real-time animation playback.

The default values for the Key Reducer filter are a precision value of 1.0 and the XYZ Curve Synchronization option disabled.