Opening an MMF File

The MMF file type is primarily associated with SMAF Player / WinOLS.

MMF	File extension: MMF
	File type:	file format

What is an MMF file

MMF files mostly belong to SMAF Player / WinOLS. Your MMF file can be one of several types. The most common is the Yamaha Synthetic Music Mobile Application Format (SMAF), a file that stores musical performance data for mobile devices.

Yamaha SMAF files: These hold sound instructions and instrument settings. You need a SMAF player or compatible mobile device to open them.

ECU tuning map files: Some MMF files contain engine tuning maps. They are used with software like WinOLS. You can find more details on tuning at this webpage.

ACS2 compressed files: These are similar to SMAF files that compress audio data.

Huawei BTS monitoring files: Other MMF files record performance data from Huawei BTS equipment (BTS3900) for monitoring network performance.

FilExt.com note: Each format uses a container to hold specific data. Use the proper tool to view or edit the file based on its source.

How do you open MMF files?

You need a suitable software like SMAF Player / WinOLS to open an MMF file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your MMF file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a MMF file directly in the browser:. Just drag the file onto this browser window and drop it.

Online MMF File Viewer

Choose your .mmf file to play

or drag and drop it here

Online File Viewer

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How do you convert MMF files to MP3, WAV, OGG, FLAC, AAC, AIFF, ...

You can convert MMF files using our online MMF file viewer (powered by Convert.Guru):

To do this, click the button "Choose your .mmf file to play" on this page.
After your file is opened in browser,
click "Save as..." in the menu.
Then choose the audio format (e.g. MP3, WAV, OGG, FLAC, AAC, AIFF, ...) you want.
Download the converted file.

Programs that open and convert MMF files:

SMAF Player / WinOLS
See the previous paragraphs to learn more about the main application. MMF files are often referred to as SMAF Player / WinOLS audios because this type of file is primarily created or used by this software.
AppMind (Message Management File) by Appmind Software AB
AppMind is a complete solution for application surveillance. This file format is classified as Text.
Mail File by Microsoft Corporation
MathMagic (Equation File) by InfoLogic, Inc.
MathMagic is an equation editor for both Windows and the Macintosh. This file is the MathMagic native file format for equations and math expressions. It is in text format; similar to LaTeX but with more condensed expressions. This file format is classified as Graphic.
McAfee VirusScan (Configuration) by Networks Associates Technology, Inc.
Program ID is Configurationfile
Meal Master Format
Media Processing Server Studio (Reference Name) by Nortel Networks
Media Processing Server Studio is a graphical software tool that is used to create, edit, and manage audio elements of menu prompts in both the Voice Processing Series (VPS) and Media Processing Server (MPS) environments. This product used to be known as Peristudio/PeriProducer. Extensions used by it for IVR vocabulary file manipulation include .MMI=Index, .MMD=Data, and .MMF=Reference Name.
Multimedia Protector (Protected Database) by Mirage Computer Systems GmbH
Multimedia Protector prevents valuable documents and data from being copied or modified without authorization. Files with the file extension MMF are database files created and accessed with this application. This file format is classified as Database.
Yamaha (SMAF Synthetic Music Mobile Application Format) by Yamaha Corporation of America
A multimedia data format invented by the Yamaha Corp. which defines a format for multimedia files which can be played back on hand-held portable devices. This is a SMAF file. SMAF = "Synthetic music Mobile Application Format", and is a multimedia data format invented by the Yamaha Corporation. The SMAF specification defines a format for multimedia files which can be played back on hand-held portable devices. Many phone companies use this format. Play using the PsmPlayer. The Mime types used with this association are: application/x-smaf, application/vnd.smaf. The identifying characters used for this association are - Hex: 4D 4D 4D 44 00 00, ASCII: MMMD... Related links: SMAF Specification/Format, PsmPlayer (Japanese Site), On-line Ringtone Converter

MMF file format details:

If you know the file format, you can also find out how to open or edit the file. The first characters in a file identify the file format, for example, HTML files start with the bytes <html>. File extension, signature and file format must match; otherwise errors will occur when the file is opened. When there is a problem with a file, the first step to solving it is to determine the file format. Our evaluation of the MMF files looks like this:

The MMF file ending covers different formats for different programs. The following file formats are most commonly found in MMF files:

60% of all MMF files belong to Yamaha SMAF Synthetic music Mobile Application Format. If you open these files in a text editor, you will see only illegible characters. MMF files are between 750 bytes and 93 KB in size. The file type was created 10 years ago, but is still used today. The files contain the following words: MMMD, OPDA, Mtsu and CNTI. Files like these are sometimes connected to music, sound, melody, basic and body.
3% of all MMF files use the same file format, which have the signature ACS2&. If you open these files in a text editor, you will see only illegible characters. The average file size is 1 MB with most files being between 86 KB and 310 MB in size. The following keywords are characteristic: ACS2&.

All other MMF files (37%) have different formats. Sometimes used for maps, monitoring, bosch, fullbackup or statistic. If you want to find out which format your MMF file belongs to, just click on the button "Choose your .mmf file to play".

Technical Data for MMF File Extension

File classification:

Audio

Identifier:

Hex: 4D 4D 4D 44 00 00, ASCII: MMMD.. (provided by TrID database)

Related files:

sma, mid, midi, map, mff, smaf, tmf, csv, zip, swf, jpg, lic, a3k, sty, tvd, wav, mp3, bin, dat, xml

Mime type:

application/x-smaf, application/vnd.smaf

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: makfile
EXEFile: %ProgramFiles%\Microsoft Visual Studio .NET\Common7\IDE\devenv.exe %1

ProgramID: Metamail Message File
EXEFile: %ProgramFiles%\Metamail Inc\Metamail Reader\METAMAIL SECURE VIEWER.EXE %1

ProgramID: Metamail Message File
EXEFile: %ProgramFiles%\Metamail Inc\Metamail Reader\MMViewer.exe %1

ProgramID: totalplayer.file
EXEFile: %ProgramFiles%\Total Video Converter\tvp.exe

ProgramID: mmffile
EXEFile: %ProgramFiles%\YAMAHA\MidRadio Player\MidRadio.exe

Show all 5 listings To Top

an mmf file format is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with MMF files

Associate the MMF file extension with the correct application.
Update your software that should actually open file formats. Because only the current version supports the latest MMF file format. Search, therefore, e.g. on the manufacturer website after an available SMAF Player / WinOLS update.
To make sure that your MMF file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .MMF file online - secure, fast, and no downloads needed.