File extension ISMV
| File type | Smooth Streaming Fragmented MPEG-4 Video Format |
| Developer | Microsoft |
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What is a ISMV file?
File with an ISMV extension contains video data in the Protected Interoperable File Format – (PIFF), based on MP4 but stored in smaller fragments, which makes it easier to stream with no distortions. It is a Microsoft standard utilised to provide multimedia data, for instance by the Smooth Streaming technology on a Microsoft IIS server.
ISMV files can be encrypted with Microsoft Expression Encoder application, while some can be converted into the original format or the MP4, with the mp4spli tool. The Smooth Streaming service enables transmission via HTTP protocol with a variable transfer, thus it can operate on many ISMV files with different image quality, dependant on the actual transfer speed.
Program(s) that can open the .ISMV file
How to open ISMV files
If you cannot open the ISMV file on your computer - there may be several reasons. The first and most important reason (the most common) is the lack of a suitable software that supports ISMV among those that are installed on your device.
A very simple way to solve this problem is to find and download the appropriate application. The first part of the task has already been done – the software supporting the ISMV file can be found in the table. Now just download and install the appropriate application.
Possible problems with the ISMV format files
The inability to open and operate the ISMV file does not necessarily mean that you do not have an appropriate software installed on your computer. There may be other problems that also block our ability to operate the Smooth Streaming Fragmented MPEG-4 Video Format file. Below is a list of possible problems.
- Corruption of a ISMV file which is being opened
- Incorrect links to the ISMV file in registry entries.
- Accidental deletion of the description of the ISMV from the Windows registry
- Incomplete installation of an application that supports the ISMV format
- The ISMV file which is being opened is infected with an undesirable malware.
- The computer does not have enough hardware resources to cope with the opening of the ISMV file.
- Drivers of equipment used by the computer to open a ISMV file are out of date.
If you are sure that all of these reasons do not exist in your case (or have already been eliminated), the ISMV file should operate with your programs without any problem. If the problem with the ISMV file has not been solved, it may be due to the fact that in this case there is also another rare problem with the ISMV file. In this case, the only you can do is to ask for assistance of a professional staff.
Similar extensions
| .aaf | Advanced Authoring Format Multimedia Format |
| .aec | DataCAD Drawing Format |
| .aep | Adobe After Effects Project Format |
| .aepx | Adobe After Effects XML Project Format |
| .aet | Adobe After Effects Template Format |
| .aetx | Adobe After Effects Format |
| .ajp | AJP Player Video Format |
| .ale | Avid Log File Format |
This extension
can be converted to:
How to associate the file with an installed software?
If you want to associate a file with a new program (e.g. my-file.ISMV) you have two ways to do it. The first and the easiest one is to right-click on the selected ISMV file. From the drop-down menu select "Choose default program", then click "Browse" and find the desired program. The whole operation must be confirmed by clicking OK. The second and more difficult to do is associate the ISMV file extension to the corresponding software in the Windows Registry.
Is there one way to open unknown files?
Many files contain only simple text data. It is possible that while opening unknown files (e.g. ISMV) with a simple text editor like Windows Notepad will allow us to see some of the data encoded in the file. This method allows you to preview the contents of many files, but probably not in such a structure as a program dedicated to support them.