irrKlang vs Live Link Face

irrKlang is a cross-platform 2D and 3D sound engine and audio library for C++ and .NET development. It plays WAV, OGG, MP3, FLAC, MOD, IT, S3M, and XM files, with both buffered and streamed playback. Its sound capabilities include 3D emulation for low-end hardware, linear or logarithmic rolloff, and effects such as echo, reverb, chorus, and distortion. Developers can use it from C++, C#, VisualBasic.NET, and Delphi.NET. Plugins can extend playback format support, and users can supply their own file readers and decoders. It does not depend on Irrlicht, so it can be used in projects without that engine. irrKlang runs on Windows, Linux, and macOS. It is free for non-commercial products; commercial use requires a Pro license. Listed one-time Pro options start at €65 for individuals and products sold for less than €20, with higher plans for other commercial uses. Linux requires ALSA, and 64-bit systems require matching 64-bit versions. Downloads are available only to existing licensees.

Live Link Face captures facial performances and generates animation for MetaHuman characters in Unreal Engine. The iOS app supports real-time and processed animation and can capture raw video and depth data for the MetaHuman plugin. Epic describes the Android app as a beta for real-time MetaHuman facial animation. Animation streams over a network to Unreal Engine through the MetaHuman Live Link plugin; the phone and computer must be connected to a network. App settings include OSC connections for external controllers and devices. Android timecode can use the system clock, an NTP server, or a Tentacle Sync device for multi-device synchronization. Real-time Android animation is limited to certain Qualcomm chipsets, and Snapdragon 8s chipsets are unsupported; Android does not support capture for offline processing. Live Link Hub can download recorded media from Android and iOS devices and trigger recording on a connected phone. The app is free on iOS and Android. The App Store listing requires iOS 16 or later, while Epic’s workflow description specifies an iPhone 12 or later and a Windows 10/11 desktop PC.