The Fourier Transform Curve Filter seems to have broke in 5.3+

[Image Removed]

Steps to Reproduce
  • UE5/Relase-5.3
  • Sandbox/Anim/ControlRigExample
  • Add the Mannequin rig to your viewport
  • Create a Level Sequence if you don't already have one
  • Drag the Mannequin into the level sequence if needed
  • Right click on the section to the right of the control rig  'Import Anim Sequence into this Section'
  • Select one of the controls on the rig and open up the Curve Editor
  • Open up the Curve Filters.   Last icon up top of curve editor to the right.
  • Select some keys and try to use the Fourier Transform filter.

Expected Result:  The selected keyframes should be 'smoothed'  removing spikes/jitter..


Actual Result: We seem to always get an interpolated flat line between the keys instead of smoothed result..   see animated .gif  in Description

Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-196032 in the post.

Login to Vote

Fix Commit28068105
Main Commit28068160
CreatedSep 20, 2023
ResolvedSep 21, 2023
UpdatedFeb 7, 2024