Java Media Framework data
File type: Digital video and movie file
A jmf file contains internal data used by the Java Media Framework (JMF), a framework for adding audio and video to Java applications.
It is an internal framework file rather than a general-purpose media file.
Found 2 different file type records with the same jmf filename suffix.
File type category:
Digital video and movie file
Date updated: October 12, 2026
The Java Media Framework, originally developed by Sun Microsystems, provides Java applications and applets with support for audio, video, and other time-based media.
A jmf file stores data used internally by JMF. Its contents depend on the framework component or application that created it, and it is not intended to hold a conventional playable video.
JMF files are intended for internal use by the Java Media Framework. They normally should be opened by the Java application that created or uses them, not by a media player or text editor.
The Java Development Kit (JDK) provides the Java development environment, but it does not provide a general-purpose viewer for this file type. If a JMF-based application cannot use the file, opening it directly is unlikely to be useful.
A jmf file is not a standard media interchange format, so it normally cannot be meaningfully converted to a video or audio format.
If the associated Java application can export the underlying media, use that application's export or capture function instead. The internal JMF data itself should generally be kept with the application that uses it.
Software apps that create jmf files:
Multiplatform
Software applications that handle other tasks involving jmf files:
Multiplatform
File type category:
Graphics file
Date updated: January 17, 2024
File extension jmf is used for Jackhammer Map Format, a binary file format used by J.A.C.K. to store map project data before being exported to MAP, like RMF.
JMF supports objects being part of multiple visgroups, KVs longer than 15 characters, and Quake III patch meshes. Additionally, it can store paths in a slightly different manner, optimized for Jack's Path Tool.
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