.MOD File Extension

Music Module File

Developer Karsten Obarski
Popularity
3.6  |  52 Votes
 

What is a MOD file?

A MOD file is a music module file saved in the standard music module format, originating from the Amiga module format. It contains note patterns (similar to a .MIDI file) and sound samples representing different instruments played back according to the notes. MOD files are typically used for background music in video games and the "demoscene" computer art subculture.

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Screenshot of a .mod file in VideoLAN VLC media player 3
MOD file open in VideoLAN VLC media player 3

Karsten Obarski initially developed the Amiga module format and released it with the Ultimate Soundtracker software for the Commodore Amiga system in 1987. As music trackers began supporting the format, especially on PCs in the 1990s, other developers released variations of the MOD format.

Initially, the MOD format only supported four audio channels and sixteen instruments. However, recent MOD variations have increased the number of supported channels to 32 and supported instruments to 31.

The sound samples within a module are assigned to different tracks and are played back according to the notes in the score. A MOD module also includes a list that tells the application playing the module the order the patterns are to be played.

NOTE: MOD files may be created by various MOD trackers, including FastTracker, StarTrekker, Noise Tracker, MilkyTracker, and Cog.

How to open a MOD file

You can open a MOD file with various audio players, such as Nullsoft Winamp (Windows), VideoLAN VLC media player (multiplatform), Schism Tracker (multiplatform), and MikMod (multiplatform). Unfortunately, some audio players that support MOD files may no longer be developed and not work on modern operating systems.

On an Android device, you can play MOD files with Xmp Mod Player, and on iOS devices, you can use PureModPlay or VividTracker to play MOD files.

How to convert a MOD file

Several audio players, such as MilkyTracker (Windows) and Cog (macOS), can convert MOD music module files to other formats.

For example, MilkyTracker can convert MOD files to the WAVE Audio (.WAV) and Fasttracker 2 Extended Module (.XM) formats.

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Programs that open MOD files

GRUB Module

Developer The GNU Project
Popularity
4.1  |  12 Votes
 

A MOD file may also be a software module used by GRUB (GRand Unified Bootloader), a boot loader for loading multiple Linux distributions. It stores compiled code that provides additional functionality to GRUB similarly to plugins. MOD files are loaded by GRUB 2 dynamically only if needed for the particular boot process.

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GRUB is a common program for loading and managing the boot process in many Linux distributions. The first version is now known as "GRUB Legacy" (no longer developed) and was replaced by GRUB 2, which is slightly redesigned to be modular. This design allows a smaller footprint for the bootloader since only the required modules are loaded.

GRUB comes with many modules. For instance, version 1.98 of GRUB 2 has 159 modules. Some examples of functionality they provide include support for partition schemes and loading Linux images.

You can find MOD files for the first version of GRUB in the /​boot/​grub/​ directory. Also, MOD files for GRUB 2 can be found in the /​boot/​grub2/​ directory.

How to open a MOD file

You can load a GRUB module MOD file by typing insmod [module_name] in the GRUB command-line (CLI mode).

Programs that open or reference MOD files

Linux

Camcorder Recorded Video File

Developer JVC
Popularity
2.6  |  18 Votes
 

A MOD file may also be a video file captured with various camcorders, including JVC EVERIO GZ-MC100, Canon FS, and Panasonic D-Snap SD-card camcorders. It stores video data compressed with MPEG2 compression and audio data compressed with MPEG-1 Audio Layer II compression.

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Screenshot of a .mod file in VideoLAN VLC media player 3
MOD file open in VideoLAN VLC media player 3

Since the MOD video format is rare, you will likely only encounter MOD files if you own a camcorder that produces them. Also, since the camcorders that produce MOD files are no longer manufactured, you may find an old MOD file on your computer that you transferred years ago.

NOTE: JVC EVERIO MG130, MG7230, and MG630 also create MOD video files.

How to open a MOD file

You can open MOD video files with various media players, including VideoLAN VLC media player (multimedia) and CyberLink PowerDirector (Windows).

If you purchased the camcorder that captured the MOD file, you can also play the video with the software included with the digital camcorder.

How to convert a MOD file

Several media players, including VideoLAN VLC media player and CyberLink PowerDirector, can convert MOD video files to other formats.

For example, VLC media player can convert MOD files to the following formats:

  • .MP4 - MPEG-4 Video
  • .WEBM - WebM Video
  • .TS - Video Transport Stream
  • .ASF - Advanced Systems Format
  • .OGG - Ogg Vorbis Audio
  • .MP3 - MP3 Audio
  • .FLAC - Free Lossless Audio Codec
  • .WAV - WAVE Audio

Programs that open MOD files

Fortran Module

Developer N/A
Popularity
2.7  |  10 Votes
 

A MOD file may also be a compiled program file written in the Fortran programming language. A separate MOD file must be created for each module declaration within the Fortran source code. MOD files group related procedures and data together in a single file, which can be referenced by other program units.

How to open a MOD file

Fortran MOD files are "intermediate" files and are not meant to be opened manually. However, they may be referenced by Fortran compilers, such as those listed below.

Programs that open or reference MOD files

Windows
G95
Silverfrost FTN95
Absoft Pro Fortran
Lahey/Fujitsu Fortran for Windows
Mac
G95
Absoft Pro Fortran
Linux
G95
Absoft Pro Fortran
IBM XL Fortran
Lahey/Fujitsu Fortran for Linux
Open64

Go Module Definition

Developer Google
Popularity
3.7  |  3 Votes
 

Go.mod is a file that tracks a Go module's dependencies. It contains plain text that specifies a module's name, Go version requirements, and contingent modules. Each Go module is linked to a corresponding go.mod file.

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Screenshot of a .mod file in Microsoft Visual Studio Code
MOD file open in Microsoft Visual Studio Code

Go is an open-source programming language originally developed at Google. It is similar to C except that it includes additional features. Go is also sometimes referred to as Golang.

Modules are Go's primary building blocks. Each Go module contains one or more functions that can be called by other modules. To ensure that each module's required Go versions and code dependencies are tracked accurately, Go produces a go.mod file for each module. Each module's go.mod lists:

  • The module's name, after the module directive
  • The module's required version(s) of Go
  • The modules that the module is dependent upon

More complex modules may include additional information in their go.mod files. For example, developers can use the exclude command to prevent their module from using a certain version of a contingent module, or they can use the replace command to load a different version of a contingent module. Developers can also include comments by prefacing the comments with //.

How to open a MOD file

You can open go.mod in any text or source code editor, such as Microsoft Visual Studio Code (cross-platform). However, you should not manually edit go.mod, as doing so may cause the file's associated Go module to function incorrectly.

If you want to make changes to a go.mod file, you should do so using the go mod command and associated sub-commands, such as go mod edit or go mod tidy.

Programs that open or reference MOD files

Neverwinter Nights Module

Developer BioWare
Popularity
1.8  |  6 Votes
 

A MOD file may also be a module created for the Neverwinter Nights (NWN) series of video games. It contains all the locations, creatures, items, conversations, scripts, and other objects included in an NWN adventure. Users typically create custom modules, save them as MOD files, and share them with others.

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NWN is a fantasy roleplaying game based on the 3rd edition rules of Dungeons & Dragons. In the game, players can choose the skills and abilities they develop as they travel through different worlds.

To enhance gameplay, you can create modules, which are adventures you can connect to make campaigns. You can create NWN modules with Aurora Neverwinter Nights Toolset, a module-building tool included with the Windows distribution of the game. After creating a MOD file, you must place it in the Neverwinter Nights 2\​modules directory for the game to load.

How to open a MOD file

Most gamers will not need to open a MOD file since the game loads it if it is placed in the Neverwinter Nights 2\​modules directory. However, you can also edit MOD files with BioWare's Aurora Neverwinter Nights Toolset included with the game.

Programs that open or reference MOD files

AMPL Model File

Developer Bell Laboratories
Popularity
1.7  |  7 Votes
 

Model file used to compute complex, large-scale mathematical problems; contains variables (parameters, and sets), a function, and constraints written in AMPL (A Mathematical Programming Language) code; appears as linear, nonlinear, quadratic, mixed-integer, and other problem types; includes comments, which must be prefaced with a "#."

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To load your MOD file, e.g., example.mod, type model example.mod; if it's located in your "amplcml" folder with your sw.exe file. If your example.mod file is located in a different location you'll need to include the path. Type something like this (if using Windows): model C:Usersexample.mod;. After successfully loading your MOD file, type solve; to solve the problem. Then if you want to display any of your results, type display and whatever results you want displayed. Remember to always end your line with a ;.

An example of a MOD file:

var XB;
var XC;
maximize Profit: 25 * XB + 30 * XC;
subject to Time: (1/200) * XB + (1/140) * XC <= 40;
subject to B_limit: 0 <= XB <= 6000;
subject to C_limit: 0 <= XC <= 4000;

Programs that open or reference MOD files

Windows
Free
Mac
Free
Linux
Free

Femap Model

Developer Siemens PLM Software
Popularity
1.7  |  7 Votes
 

Model file used by Femap, a CAD engineering analysis program; stores a 3D model with elements, materials, properties, data surfaces, constraints, and other model data.

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Femap stands for Finite Element Modeling and Postprocessing, and enables you to build finite element models of engineering problems and view the solution results.

NOTE: The MOD file extension was replaced by .MODFEM with the release of version 9 of Femap.

Programs that open MOD files

Windows

Archicad Module

Developer GRAPHISOFT
Popularity
1.2  |  6 Votes
 

A MOD file may also be a module created by GRAPHISOFT Archicad architectural design software. It is a simplified version of a .PLN file, containing only visible layers, embedded objects, and references used by included elements (PLN files store more information and are larger). Archicad users can save elements they want to reuse as a module, then insert the module into other projects.

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Screenshot of a .mod file in GRAPHISOFT Archicad 26
MOD file open in GRAPHISOFT Archicad 26

Archicad is a building information modeling (BIM) application for designing and visualizing interiors, exteriors, landscapes, and whole structures. The software provides many helpful design tools, including modules that function as master templates you can "hotlink" or embed in projects.

Hotlinked modules are beneficial when you want to replicate elements many times in different projects. You can add a module to a project as a hotlink module, and if you have any changes you want to make to the module, you only have to modify the original "source" module in the MOD file (and Archicad will make the changes to the hotlinked modules).

For example, if you want to add many rooms or stories of the same design to a hotel, you can create one room or story design, save it as a MOD file, insert it into your hotel design, and replicate it. Then, if you have to make any changes to the room or story design, you only need to modify the original room or story design MOD file instead of all the replicated rooms or stories.

You may also merge a module in a MOD file into a project instead of adding it as a hotlinked module. This is helpful when you want to reuse a module in a project but do not need to replicate it in a design. However, once you merge the module, it will no longer be connected to the MOD file.

How to open a MOD file

You can open a MOD file with GRAPHISOFT Archicad in Windows and macOS. To open a MOD file, select File → Open and select the MOD file.

Programs that open MOD files

Windows
Mac

V Package Definition

Developer Alex Medvednikov
Popularity
2.0  |  1 Vote
 

V.mod is a V package definition file. It is stored in the top-level folder of a V package, along with one or more V modules. V.mod lists a package's name, description, version, license, and dependencies.

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Screenshot of a .mod file in Microsoft Visual Studio Code
MOD file open in Microsoft Visual Studio Code

V is a statically-typed compiled programming language developed by Alex Medvednikov. It is similar to Google's Go programming language. V allows developers to group functions together into a module and modules together into a package. This allows developers to quickly install, update, and otherwise manage all the functions a package contains.

Each V package is a directory that contains one or more modules and a v.mod file. When a developer uses the v new command to create a new V package, V asks the developer for some basic information about that package. It then saves that information in the v.mod file.

Common MOD Filenames

V.mod - The default name assigned to V package definition files.

How to open a MOD file

You can open a v.mod file with Microsoft Visual Studio Code (multiplatform) or any other text editor, to view the V package definition it contains.

Programs that open or reference MOD files

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