File Extension Library


.ISMV File Extension

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

What are .ISMV files and how to open them?

Can't open .ISMV 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 .ISMV file.

What is a .ISMV file extension?

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

.ISMV is IIS Smooth Streaming Video File

Video file encoded for Smooth Streaming on a Microsoft IIS Web server; saves an MPEG-4 (.MP4) file in a fragmented format, which stores the video in smaller parts within the overall video container; provides a suitable format for streaming because the video can be requested one fragment at a time.

ISMV files are saved in the Protected Interoperable File Format (PIFF), which is based off of the MPEG-4 specification and is Microsoft's standard for multimedia content delivery. The format allows for encryption and DRM protection.

Smooth Streaming enables streaming over the HTTP protocol with negotiation of variable transfer rates. Therefore, IIS servers can host multiple ISMV files, each at a different video quality level. Depending on the current bit rate, Smooth Streaming picks the optimal ISMV file and extracts the video fragment for the particular time to achieve the best video quality.

NOTE: ISMV files can be encoded using the paid version of Microsoft Expression Encoder. Some ISMV files can be converted back to .MP4 files using mp4split.

List of all softwares that can open the IIS Smooth Streaming Video File
Windows
Microsoft IIS
mp4split

How to fix problems with .ISMV files

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