Animation Compression Library Plugin \\Fortnite\Main\Engine\Plugins\Animation\ACLPlugin The Animation Compression Library Plugin exposes the standalone ACL to UE4 and UE5 through a plugin. This adds various animation compression codecs for games to use. This is generally a net win with ACL beating the current engine codecs on all metrics: quality, compression speed, decompression speed, and memory footprint. It is free and distributed via the Unreal Marketplace and used by many licensees already (including Fortnite). https://github.com/nfrechette/acl-ue4-plugin/blob/develop/LICENSE Licencees P4 Git /Engine/Source/ThirdParty/Licenses