MOD

Video files with mod file extension are standard vob files with audio in Dolby Digital audio format. MOD video file format is used by the tape less JVC camera recorders (JVC EVERIO), Panasonic camera recorders (Panasonic D-Snap) and Canon camera recorders (Canon FS). The original founder of this format is JVC.

The mod files are stored only on camera's hard drive or memory card. If files are transported by the camera software to the computer, the file extension mod will by changed to file extension MPG or MPEG. Audio and video data will be modified for perfect playback in a computer.

If you exported files from the camera recorder directly to computer, not through camera software, you can change file extension MOD to file extension MPG or MPEG and play a video file in media player, that supports playback of video files with MPEG2 compression (DVD-MPEG2) and playback of Dolby Digital audio format (mod files contains MPEG2 video data and MPEG-1 Audio Layer II audio data).

This method has sometimes problems with malfunction playback, like missed video or audio. The recommended media player, that has no problem with MOD playback, is VLC Media Player, but VLC Media Player has mod file associated as Tracker Module (sound file) and it is necessary to change mod file extension to MPG or MPEG file extension.

If you have to play the mod video file in VLC Media Player without renamed file extension, VLC Player will report, that the file is corrupted or it is not the Tracker Module audio format. Other recommended media player is Microsoft Windows Media Player version 12 and higher, but also file extension mod must be changed to mpg or mpeg.

The mod file extension was and perhaps still is used by some program for sound modules. These audio files could be in the past found on Amiga platform, as well as MS-DOS. Commonly found in old computer games.

MOD files are often referred to as tracker modules, and composing modules is known as tracking, simply because the first ever module creating program was Soundtracker, created by Karsten Obarski in 1987.

Soundtracker was cloned many times, with programs such as Noisetracker, and Protracker being direct descendants from the original Soundtracker code, and others such as MED/OctaMED and Oktalyzer being written from scratch. Such programs are called trackers in general.

Can be many different sound formats sharing same file extension.

MIME types:
audio/mod
audio/x-mod

The mod file extension is associated with the CADdy++, 2D/3D CAD software for Microsoft Windows operating system, developed by DataSolid.

The mod file contains mechanical 2D/3D model data from CADdy++.

The mod file extension is related to the CATIA (Computer Aided Three dimensional Interactive Application), a modeling software for Microsoft Windows operating system, developed by Dassault Systèmes S.A.

The mod file contains model created with CATIA.

The MOD file extension was also used by EPOC, an operating system developed by Psion in the late 1980s and early 1990s for Psion's "SIBO" (SIxteen Bit Organisers) devices. All EPOC16 devices feature an 8086-family processor and a 16-bit architecture. EPOC16 is a single-user pre-emptive multitasking operating system, written in Intel 8086 assembler language and C and designed to be delivered in ROM.

In June 1998, Psion Software became Symbian, a major joint venture between Psion and phone manufacturers Ericsson, Motorola, and Nokia. As of Release 6, EPOC became known simply as Symbian OS.

The mod file extension is also used by Femap engineering software, most likely for one of its CAD files.

Femap is an advanced engineering simulation  program used to create finite element analysis models of complex engineering projects.

The mod file extension is associated with the Fortran programming language is associated with the Fortran programming language for numeric computation and scientific computing, developed by IBM. The .mod file contains Fortran module.

The mod file extension is associated with the GNU MathProg. GNU MathProg is a modeling language intended for describing linear mathematical programming models. Model descriptions written in the GNU MathProg language consist of a set of statements and data blocks constructed by the user. GNU MathProg is part of the GLPK solver.

The mod file extension is associated with Multiplan.

Multiplan was an early spreadsheet program developed by Microsoft. Known initially by the code name "EP" (for "Electronic Paper"), it was introduced in 1982 as a competitor for VisiCalc.

The .mod files contain spreadsheet created with the application.

Modules used by Microsoft Windows kernel.

In computing, a loadable kernel module (or LKM) is an object file that contains code to extend the running kernel, or so-called base kernel, of an operating system.

The mod extension is also used for some old molecular model format used in the Sequence Alignment and Modeling System from the UCSC Computational Biology Group.

This .mod model file is created by the buildmodel, addfims, or modelfromalign programs. When many_files is not set (the default), buildmodel places the run statistics, parameter settings, and the frequency model into this file as well.

Seems like highly unique and specific file type.

The mod file extension is used for files that contain source code in Modula-2 programming language. It is used in Clarion program, a software development tool software, sold by Soft Velocity.

The mod file extension is associated with the Monarch (now called Datawatch Modeler) the smart business intelligence software for Microsoft Windows.

The mod file stores some kind of data used by Monarch.

The mod file extension is related to Microsoft Windows and MS-DOS operating systems for IBM-PC computers.

The mod file is implementing MS-DOS support for Windows DLL's..

Most likely some old format without support. No further information could be found.

The MOD file suffix is associated with the Neverwinter Nights. File contains module.

The mod file extension is associated with Peachtext by Peachtree Software.

The direct predecessor of Peachtext was a program Magic Wand.

Magic Wand is the name of a piece of word-processing software for CP/M-based computers first released in 1979.

The mod files were used for databases.

The mod file extension used for modules used by some PHP programs such as phpBB.

The mod file contain text source code written in PHP, a server-side scripting language for web development.

The mod file extension is related to the ProModel, a discrete event simulation software, used for evaluating, planning or designing manufacturing, warehousing, logistics and other operational and strategic situations.

The .mod file stores model.