Animation compression for ControlRigParameter tracks in Sequencer

Development Character & Animation
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Hello Epic Support,

We’re encountering performance issues in Unreal Engine when working with Level Sequences that include long Control Rig animations (200 000+ keys), for long Metahuman facial capture sequence. Specifically, we’ve noticed that :

  • These sequences take a significant amount of time to load
  • The assets occupy a large amount of disk space

We’ve investigated potential optimizations, but unlike UAnimSequence assets, we haven’t found any built-in options to apply animation compression to ControlRigParameterSections.

Could you please let us know :

  • Is there any existing recommended practices for optimizing loading times for ControlRig animations in sequences ?
  • Are there are plans to extend the Animation Compression system to support ControlRigParameterTracks/Sections in the future as they seem to be the way to go for Metahuman facial animation ?

Best regards,

Thomas Vallentin

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Steps to Reproduce

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Hey there,

We have been looking into options for long performance captures and increasing performance in the sequencer. Currently, we don’t have plans for implementing animation compression directly into the sequencer, but we are looking at other methods.

In terms of options to handle cases like this, we recommend saving your control rig sequence as an animation sequence and then using a layered control rig for the moment.

Dustin