File Extension MTX

  • Full name
    Microsoft Visual Studio Manual Test Text Format
  • Developer
  • Popularity
Have you encountered a problem with a MTX file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a MTX file here. In the further part of this page we have added a list of programs that should open your MTX file. It is enough you choose a proper application for your operating system, download and install it.


The file extension MTX is used for 3D scene data in the so-called MetaStream format. It is an open streaming format that displays 3D content on web pages. An MTX file contains a so-called high-level description of a model with attributes and animations, while the textures and model geometry are stored in mts files.

To view the 3D data with a browser, the Viewpoint Media Player Plugin is required. The development has been discontinued for a long time, so that Mozilla Firefox 3.0 is no longer supported. In addition to the Internet Explorer, Safari on Apple Mac OSX can also be used.

In addition to some CAD programs (some only with a plugin), the long-running authoring program Adobe Atmosphere can handle the MetaStream format.

The Metastream 3 (MTS3) format is also referred to as the VET (Viewpoint Experience Technology) format.

Programs which can open a MTX file

How to open a MTX file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the MTX file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a MTX file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support MTX files. At this point we are looking for disk space where the application was installed in and we can link it with a MTX file. Since then, our operating system will use the selected program to support all MTX files.

Other issues

Despite the described problem with MTX there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the MTX file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the MTX file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

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