XR/3D Scenes with MPEG-I Scene Description

Tutorials, Tests and Examples

Scope

Resources

Tutorials

Developer Exchange

Start here: first check the Requirements to confirm your device is supported. If you are new to the tools, the Android build is the simplest starting point. The tutorials below are grouped by what you want to do: build and run the player, author test content, or explore use cases.

Getting started

1. Read the model first. The Tech overview of MPEG-I Scene Description explains the Presentation Engine, MAF API, buffers and the glTF extensions the tools implement.
2. Build the player. Clone rt-xr-unity-player (it pulls in rt-xr-glTFast as a submodule) and compile rt-xr-maf-native for the target platform; the MAF native library is built separately.
3. Load a scene. Use the reference scenes in rt-xr-content (for example studio_apartment/studio_apartment.gltf for media pipelines, video texture and spatial audio, or the anchoring/ and gravity/ scenes for anchoring and interactivity) and deploy them to the device.
4. Follow the changelogs. The player releases and the Resources page track which parts of the scene-description format are implemented and what is in progress.

Build and run the player

• Tutorial: Compile the Unity project for Android smartphones: step by step instructions to compile the rt-xr-unity-player and rt-xr-maf-native projects for Android smartphones. The compiled application loads glTF documents with support for MPEG glTF extensions. This is the simplest build to start with.
• Tutorial: Compile the Unity project for Meta Quest 3: step by step instructions to compile the rt-xr-unity-player and rt-xr-maf-native projects for Meta Quest 3. The compiled application loads glTF documents with support for MPEG glTF extensions.

Author test content

• Tutorial: Creation of MPEG-I Scene Description Test Assets: a collection of MPEG-I Scene Description test assets alongside instructions and insight into the use of the Blender glTF exporter to add a series of MPEG extensions which can later be played in the Unity Player.
• Tutorial: Usage of Blender glTF exporter and XR Unity Player: insight into the use of the Blender glTF exporter to add a series of MPEG extensions which can later be played in the Unity Player.

Explore use cases

• Tutorial: Immersive 3D Media Message: an overview of different use cases related to VR, XR, 3D scenes and AR scenes. It also provides information on how to share 3D assets using 3GPP conforming messaging (MMS) and third-party applications.

In Action

Developer Exchange

The YouTube channel hosts some practical videos provided by developers on the use of the Reference Tools.

The videos below are demonstrations and walkthroughs, not step-by-step setup guides; for setup, follow the tutorials above. Some of the videos are also available here:

In Action

XR Media with MPEG-I Scene Description at IBC 2025

In Action

News on XR Unity Player - Developer Exchange

Nils Duval (Motion Spell)

In Action

Using the Blender glTF exporter with the XR Unity Player - Developer Exchange

Nils Duval (Motion Spell)

In Action

XR Player supported by 5G-MAG Reference Tools - Developer Exchange

Imed Bouazizi (Qualcomm)

Browse all 5G-MAG videos →