Why VTuber Software Needs Cloud XR Streaming
The world of virtual content creation continues to evolve rapidly, and VTuber software has become essential for creators worldwide. Applications like VSeeFace, VTube Studio, and Xiao K Live Room enable creators to bring high-fidelity 3D virtual avatars to life on major streaming platforms, with real-time facial tracking, dynamic clothing customization, voice mapping, and interactive features—all driven by computer graphics.
Running such graphically intensive applications locally demands high-end GPUs and substantial system resources—hardware that many creators and small teams simply cannot access. LarkXR eliminates this barrier by hosting the application on centralized, high-performance cloud GPU infrastructure. With intelligent resource scheduling and elastic scaling, LarkXR delivers smooth, low-latency streaming to lightweight client devices while enabling software providers to reach a much wider audience.
These VTuber applications serve as outstanding real-world examples of how LarkXR handles hybrid applications that combine 2D interfaces (such as login portals and control panels) with rich 3D content. This tutorial walks you through the exact configuration process and highlights why the right settings make all the difference.
The Hybrid 2D/3D Challenge in VTuber Software
From a technical standpoint, VTuber applications like VSeeFace, VTube Studio, and Xiao K Live Room share a common architecture challenge: they are not a pure 3D engine application. Many begin with a 2D portal login, setting interfaces, or control panels before launching the main 3D avatar environment. From a business standpoint, moving these applications to the cloud unlocks subscription or pay-per-minute models and dramatically lowers the hardware requirements for end users globally.
Figure 1: Xiao K Live Room streaming in action — a complete VTuber scene rendered remotely and delivered with full interactivity.
LarkXR is uniquely positioned to support this hybrid workflow. While standard SR (3D Shared Mode) excels with native Unreal or Unity pixel-streaming apps, it often fails to display or interact properly with 2D login screens and interface elements. The solution lies in SR (Exclusive Mode)—designed precisely for applications that mix 2D UI elements with 3D rendering.
In addition, shifting from local execution to remote streaming requires audio and video passthrough (webcam and microphone) so VTubers can still use their local devices for real-time control and facial tracking.
Implementation Guide: VTuber Software with LarkXR
The following step-by-step guide uses Xiao K Live Room as the implementation example. This popular VTuber software represents a typical hybrid 2D/3D architecture—starting with a 2D login portal before transitioning to the 3D avatar environment.
While these specific steps reference Xiao K Live Room’s installation paths and interface flow, the same configuration principles apply to VTube Studio, VSeeFace, and other VTuber applications that combine interface elements with real-time 3D rendering. Adjust file paths and interface-specific steps according to your chosen software.
Step-By-Step: Configuring Xiao K Live Room with LarkXR
Prerequisite
– Assume you already have LarkXR deployed, either standalone or cluster version of LarkXR
– Configure the application settings to enable selection of SR (Exclusive Mode)
Steps to Configure Application for Selection of SR
1. Navigate to <LARK_XR_INSTALL_DIR>\LarkXR-Standlone\larkxr-center\
2. Open file and edit application.properties
3. Search and configure pxy.dispatch-policy.enable-exclude-mode to true
4. Restart the LarkXR application
Step 1: Prepare and Verify the Application on the Server
Install Xiao K Live Room on the target host.
Launch it locally to confirm the portal login, avatar loading, and streaming features all work correctly.
Step 2: Create a New Package in the LarkXR Admin Console
Navigate to Applications → Package → Add Package.
Choose “Type of Installed File” (instead of the usual ZIP upload). This option is critical when the target application is pre-installed on the server rather than packaged for upload.
Figure 2: Selecting “Type of Installed File” during package creation in the LarkXR Admin Console.
Step 3: Enter the Executable Path
In the next screen, manually fill in the full path to the launcher executable (example: C:\Program Files\XKLive\bin\launcher.exe).
Figure 3: Specifying the exact EXE file path for the locally installed application.
Step 4: Publish the Package
Save the configuration, then click the “Add” button to publish the package as a streamable application.
Step 5: Set the Correct Render Type
Edit the published application and change Render Type to SR (Exclusive).
This is the key setting that enables proper handling of the 2D login portal together with the 3D avatar.
Enabling Audio and Video Passthrough
Once the application is launched from the LarkXR streaming frontend:
1. Click the expand button in the top-center control bar to open the advanced panel.
2. Toggle on the camera (video) and microphone (audio) passthrough icons.
Figure 4: Audio and video passthrough controls in the streaming client interface.
Important Security Note
Passthrough of camera and microphone data requires the LarkXR server to be served over a proper domain name with HTTPS encryption. This mode automatically creates isolated system user accounts and directories on the render node, ensuring full compatibility with applications that rely on user-specific settings.
Unlocking Broader Application Possibilities
Mastering the configuration of hybrid 2D/3D applications like Xiao K Live Room, VTube Studio, and VSeeFace significantly expands what you can achieve with LarkXR. You can now stream titles that previously required complex workarounds or local high-end hardware, reduce end-user computational demands, and open entirely new cloud-based business models for VTuber tools, enterprise training software, and any application containing mixed interfaces.
Whether you are a developer, content platform operator, or enterprise looking to deliver immersive experiences at scale, understanding these settings gives you the flexibility to bring almost any Windows application combining 2D and 3D elements to the cloud.
Ready to Deploy Your VTuber Application?
This implementation guide has demonstrated that LarkXR supports major VTuber platforms globally—from Asia-focused solutions like Xiao K Live Room to international platforms like VTube Studio and open-source tools like VSeeFace.
Explore the full LarkXR documentation or contact the Paraverse team to discuss your VTuber platform or hybrid application globally.