Files that contain the .ivr file extension are most commonly associated with the RealPlayer media playback software. The IVR file format was developed by RealNetworks to share video files over the Internet. Users can create IVR files by recording videos with versions of RealPlayer 11 or later. These IVR files are sometimes converted into the AVI file format to make the data in the files more versatile for distribution.
The Virtual Reality World software application also uses the .ivr file suffix. These IVR files contain game files that are referenced by the Virtual Reality World application. Custom versions of these IVR files can be created with the iSeeMedia software program.
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