Greetings,
Recently I trivially modified the ActorX Importer for batch exporting skeletal animations of Lineage 2M as in attachment. I wish it could help anyway.
A UModel-exported L2M skeletal mesh has one .psk (mesh) file and an extra animation folder containing multiple .psa files, each in which contains only one animation track, causing it inconvenient to export all animations for a single mesh. This modification allows to batch export multiple .psa files from a specific folder for a single skeletal mesh.
To use this function, firstly import a .psk skeletal mesh. Then press "Export PSAs from Folder..." button and specify the folder containing .psa files. If it runs correctly, a subfolder named "FBX" will be created in the specified folder and contains all animations as FBXs, one for each track. Then you can import them into UE4 or do something else. Since I actually do not understand about how psa-importer works, it's not implemented to combine all animations into a single FBX.
If there are any unexpected behaviors, please don't hesitate to reply this topic or contact me:
sodiumzh@outlook.com.
Other tips about L2M extraction:
Encryption code (from Internet, needed when extracting any L2M files with UModel):
0x36B7CC0299336C3A522B3A6E3205E3C2AC68DC3703AC0AAFEF56CF90972EAF3E
Version: UE 4.21