mviewer icon

mview viewer and exporter

Convert Marmoset .mview scenes to glTF and GLB.

mviewer is a Rust-native .mview viewer, exporter, and converter for static and animated Marmoset Viewer scenes. It is designed for users searching for an mview viewer, mview editor, mview to gltf, mview to fbx, or mview to obj workflow.

Download latest release View on GitHub

mviewer exports to glTF and GLB directly. If you need FBX, use the generated glTF as the intermediate format.

mviewer export preview

What it exports

  • Static and animated .gltf scenes
  • Single-file .glb export
  • Meshes, skins, animation, cameras, and lights
  • Textures plus merged alpha / metallic-roughness maps
  • GUI export to OBJ/MTL for selected static meshes
  • Desktop preview can open local files or supported URLs directly

Install

  • Windows 64-bit: mviewer-vX.Y.Z-windows-x64.zip
  • Linux 64-bit: mviewer-vX.Y.Z-linux-x64.tar.gz
  • macOS Apple Silicon: mviewer-vX.Y.Z-macos-arm64.tar.gz
  • macOS Intel: mviewer-vX.Y.Z-macos-x64.tar.gz
  • Extract it anywhere
  • Run mviewer --help to verify the install

Quick start

mviewer input.mview output_dir

The release package now uses a single mviewer binary. Launch mviewer with no arguments for the embedded preview app, open a local .mview file or supported URL, or run it with arguments for direct CLI export.

Why glTF first

glTF preserves materials, skins, animation, cameras, and lights better than the old workflow. From there you can convert to FBX, OBJ, Blender, or other formats if needed.