This unity project is simple example of ply export using RealSense SDK for Unity.

• RealSense SDK version : 2.45.0
• Unity Version : 2020.3.9f
• Tested realsense camera : D415

You can change ply file name in inspector of PlyExportSceneManager.

If you want to see ply file, use CloudCompare. (https://www.danielgm.net/cc/)

If you want to render point cloud in Unity, check pcx.(https://github.com/keijiro/Pcx)