ALS animation blueprint retarget in UE5

[NihilGates]

Hi!

Has anyone managed to somehow retarget the ALS anim blueprint in UE5 to different skeleton?
I have been trying to use the UE5 mannequin with it, and Metahumant, but both attempts failed.
I spent like 4 days trying to make it work, but with no luck.

I would apprecieate any help with retargeting the ALS anim blueprint in UE5.

Here is UE5 mannequin after retargeting:

And here is UE5 Metahuman:

Here is the IK rig for the AnimMan:

And for the UE5 Mannequin:

Also independent animations seem to be working fine:

Things start to get ugly in the Animation Blueprint only

Any help would be appreciated guys!

[Naios]

This is caused by an issue in the IKRetargeter. I pullrequested a fix already: https://github.com/EpicGames/UnrealEngine/pull/9119

You don’t have to rebuild your full engine to apply the fix. It is enough to copy this directory https://github.com/EpicGames/UnrealEngine/tree/a6be5072e634a4974376d077542bbd1647ea1fe8/Engine/Plugins/Animation/IKRig (version 5.0.1) to your Projects Plugins directory and recompile your project. The plugin in the project will be used instead of the engine one.

[Naios]

@TheRickestRick you have to link your github account to your Epic account in order to get access to those links.

[TheRickestRick]

Ok, thanks!

[Tavail]

I tried this out on UE 5.0.2, even made the PR changes myself and rebuilt the engine. After a fresh retarget with new IKRigs I still get a goopy mess. Does anyone have a working example of a retarget onto a Metahuman?

[TheRickestRick]

I have been searching far and wide for that, and I have yet to find it. I think everyone is having the same issue. I have had a few good laughs from it though.

[Tavail]

Lmao, you've never seen hands so big. Part of me wishes I could find a way to just make this the game. But it doesn't seem to be very performant. The first time I added the anim to the characterBP I probably laughed for 15 minutes straight.

[Tavail]

@TheRickestRick I took another stab at it tonight, idk if you could call it progress though LMFAO.

https://media.giphy.com/media/Nsh8K3Pt2fqIZ71MVp/giphy.gif

https://media.giphy.com/media/5qGOgobrCeglCYVvJQ/giphy-downsized-large.gif

[vswarte]

The first GIF illustrates the IK set-up being absent, AnimMan IK and Mannequin/MH IK are currently not 1-to-1 retargetable like this. Unless I missed something, You will most likely have to edit in some virtual bones on the MH skeleton and edit the anim BP to use them.

For the second GIF it seems it's messed up your additive settings on some animations. Compare the ALS anims and the retargeted ones to see if that is set up correctly.

The outlined field would be empty on the retargeted ones but the there will be a Additive Anim Type set.

[Tavail]

The gifs above are from the same compile. With the IK stuff, I had actually already added the Virtual Bones (similar to what the OP put in his images) needed and changed the references in the AnimBP. I went through and verified that none of the Animations that had Additive Settings were null. It looks like they are all setup correctly. This does also seem to be wonky.

I haven't had much time to dig through and debug the issue, but it seems when the character moves, the animations play correctly, but he just grows really really large.

[woshilitiaotiao]

the same ploblem as yours, i dont konw why the Legs shaking . no idle to solve it

[emaovo]

the same ploblem as yours, i dont konw why the Legs shaking . no idle to solve it

try to search into the Discord channel about it. We found plenty of suggestions about the same issue and managed to solve it working on the IK bones. Can't give you more details cause I'm a programmer and our animators did it.