Opening an ISM File

The ISM file type is primarily associated with IIS.

ISMFile Extension ISM
File extension: ISM
File type:  track and bitrate manifest

What is an ISM file?

ISM files mostly belong to IIS by Microsoft. ISM filename extension is associated with Internet Information Services (IIS) Smooth Streaming manifest files used to store track and bitrate information of ISMA (IIS Smooth Streaming Audio) and ISMV (IIS Smooth Streaming Video) files. The contents of ISM files are saved in XML format and used to determine the quality and bitrate used to play multimedia after checking the network speed of a client. ISM filename extension is also associated with installation package projects created with InstallShield, a program installer for Windows. Such ISM files contain source code, installer dialog settings, and license data stored in binary or XML format and used to build an installation package. MySQL, a relational database management system saves ISAM table handlers in ISM files. ISM is also used to store an encrypted model created using SimulationX, a valuation software for all components of technical systems.

How to open ISM files

You need a suitable software like IIS to open an ISM 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 ISM file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a ISM file directly in the browser:. Just drag the file onto this browser window and drop it.

Online ISM File Viewer

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How do you convert ISM files to MP4, MP3, MKV, AVI, ...

If you want to convert or edit an ISM file, you can use our free Online ISM File Converter (powered by Convert.Guru):
  1. To do so, click the "Choose your .ism file to view this image" button above.
  2. After your file is opened in browser,
  3. click "Save as..." in the menu.
  4. Then click the video format (e.g. MP4, MKV, AVI, ...) you want.
  5. Download the converted file.

Programs that open and convert ISM files:

  1. IIS by Microsoft
    See the previous paragraphs to learn more about the main application. ISM files are often referred to as IIS videos because this type of file is primarily created or used by this software.
  2. InstallShield (project) by Revenera
    InstallShield is a software for building and managing package installers compatible with Windows server and desktop platforms as well as Symbian operating systems. A software package project created with InstallShield is saved in an ISM file before it is built (converted) to MSI, EXE or SIS. This file format is classified as Developer. Related links: Saving an InstallShield Project File (.ism) in XML or Binary Format
  3. MySQL (ISAM table handler data) by Oracle
    MySQL is a cross-platform relational database management system mainly used to persist data used by native and web-based data-driven applications. MySQL saves ISAM table handler data in ISM files. This file format is classified as Data.
  4. Silverlight (track and bitrate manifest) by Microsoft
    Silverlight is a cross-platform software development and rich media creation framework. ISM Smooth Streaming manifests used by IIS may be edited or merged using Silverlight. This file format is classified as Video.
  5. SimulationX (encrypted model) by ESI ITI GmbH
    SimulationX is a software for valuation of the interaction of all components of technical systems. This CAE tool is used for simulation and analysis of physical effects with ready-to-use model libraries for 2D mechanics, 3D multibody systems, power transmission etc. Encrypted models created with SimulationX are saved in ISM files. This file format is classified as Encoded.
  6. XnView MP (multicolor image) by XnSoft
    XnView MP is a cross-platform image management software with editing and conversion capabilities. It supports various image formats including the older Image System (Multicolor) image format. This file format is classified as Raster Image.

ISM file format:

A file format defines how the data in the file is structured. The initial characters of a file are called signature, sometimes also referred to as "magic bytes". The signature can be used to infer the file format. However, different programs can use the same file extension. Furthermore, a file extension can be renamed incorrectly and double-clicking on it will then display an error when it is opened. Knowledge is power - this also applies when dealing with unknown or faulty files. Our evaluation of the ISM files looks like this:

The ISM file extension is not found very often and covers a large number of different file formats. The file formats most commonly found in ISM files are:

All other ISM files (70%) have no uniform format, frequently e.g. ISAM table handler data, XML and NRKT. Sometimes used for actives, setup, agent, combined, decoys, bento, auto or save. If you want to find out which format your ISM file belongs to, just click on the button "Choose your .ism file to view this image".

Technical Data for ISM File Extension

File classification:
Video
Related files:
lsm, ismv, isam, docx, wsp, doc, manifest, iwz, xlsx, ims, txt, jsm, xls, mp4, isd, html, exe, m3u, dgn, jmx, hsh, isp, xix

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: GraphicsConverterPro.ism, FileType: Image System (Multicolor), AppName: GraphicsConverter-reg
EXEFile: GraphicsConverter.exe

ProgramID: ISExp.OldProjectFile.1
EXEFile: %ProgramFiles%\InstallShield X Express\System\Ism.exe %1

ProgramID: XnView.Image
EXEFile: %ProgramFiles%\XnView\xnview.exe %1

ProgramID: ISWI.ProjectFile
EXEFile: %ProgramFiles%\Common Files\InstallShield\Ism.exe %1

ProgramID: ISExp.OldProjectFile.1
EXEFile: %ProgramFiles%\InstallShield\Express 5.0\System\Ism.exe %1

ProgramID: ISWI.ProjectFile.1
EXEFile: %ProgramFiles%\Macrovision\IS11.5\System\isdev.exe

ProgramID: ISWI.ProjectFile.1
EXEFile: %ProgramFiles%\Common Files\InstallShield\Ism.exe

ProgramID: ArchiCAD.ismFile
EXEFile: %ProgramFiles%\Graphisoft\ArchiCAD 9-S\ArchiCAD.exe

ProgramID: ArchiCAD.ismFile
EXEFile: %ProgramFiles%\ArchiCAD 6.5\ArchiCAD.exe

ProgramID: ArchiCAD.ismFile
EXEFile: %ProgramFiles%\Graphisoft\ArchiCAD 10\ArchiCAD.exe


an ism track and bitrate manifest is a special file format by Microsoft and should only be edited and saved with the appropriate software.

How to solve problems with ISM files

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