File Extension Library

.ISM File Extension

  • Developer by: Microsoft
  • Category: Video Files
  • Format: XML

What are .ISM files and how to open them?

Can't open .ISM file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .ISM file.

What is a .ISM file extension?

.ISM file extension is created by Microsoft. .ISM has been classified as Video Files. The format of .ISM file is XML.

.ISM is IIS Smooth Streaming Manifest File

File used by the Smooth Streaming extension of Microsoft's IIS Web server; uses XML formatting and contains bit rate and track information for audio (.ISMA) and video (.ISMV) files hosted on the Web server for streaming; saved in the same server directory as the multimedia files; allows the server to know which bit rates map to which multimedia files, which is useful for determining the streaming quality after negotiating the connection speed with a client.

ISM files are often referenced in Silverlight and other streaming applications for accessing video or audio streams. In the Smooth Streaming API, the SmoothStreamingSource is used to specify a streaming source for a SmoothStreamingMediaElement (SSME) that streams the multimedia content.

NOTE: ISM files are generated using Expression Encoder, a program that creates the multimedia content in addition to the manifests.

List of all softwares that can open the IIS Smooth Streaming Manifest File
Microsoft IIS
File Type 2:

InstallShield Project File

Developer by: Flexera Software Category: Developer Files Format: XML

Project file created by InstallShield, a program used to create Windows installers; contains all project settings and code, including directory structures, file names, custom scripts, and installer dialog settings; used to build an installation package.

ISM files can be saved in either a binary format or an XML format.

NOTE: ISM files are created by the Premiere and Professional editions of InstallShield.

List of all softwares that can open the InstallShield Project File
Flexera InstallShield

How to fix problems with .ISM files

  1. You need to update the application that you normally use to open .ISM files. Only the latest version of the software supports the current .ISM file format
  2. You need to check the .ISM file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)