Adobe Director file
File type: Various data file
The .mmdr file is an internal data file associated with Adobe Director, a multimedia authoring application.
It stores various data used internally by Director rather than serving as a standard video or audio file.
File type category:
Various data file
Date updated: October 2, 2026
Adobe Director was a multimedia content authoring and editing application from Adobe. It was available for Microsoft Windows and Apple macOS, formerly called Mac OS X.
The MMDR file extension identifies data used internally by Director. The file is not necessarily a complete Director movie or a standalone media file.
Adobe Director is discontinued, so the MMDR format is a legacy format and is no longer commonly used. Files may depend on the Director version and project that created them.
Open the file with a compatible version of Adobe Director on Microsoft Windows or Apple macOS. Because MMDR files can contain internal project data, they may not open meaningfully on their own; the related Director project may also be required.
If the file does not open directly, place it with the associated Director project and open that project in Director. Modern operating systems may require an older compatible system or installation because Director is discontinued.
It is an internal Director data file rather than a normal media format, so an MMDR file by itself may not be convertible.
If a compatible copy of Adobe Director can use the file as part of its project, open the project there and use Director's own publishing or export features to create an appropriate output format.
Software applications that handle other tasks involving mmdr files:
Microsoft Windows
Apple macOS / Mac OS X
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