Ray Dream Studio
File type: Various data file
The .rd4a file extension identifies an animation data file created by Ray Dream Studio, an older 3D graphics application for Macintosh computers.
The file stores data used by a Ray Dream Studio animation project.
File type category:
Various data file
Date updated: September 28, 2026
Ray Dream Studio was developed by Ray Dream as an application for creating and rendering 3D graphics and animations. An .rd4a file belongs to the application's animation data.
The format is a proprietary application format intended to be used with Ray Dream Studio rather than a general-purpose animation format.
Ray Dream Studio is old and no longer supported. The format is therefore uncommon and may be difficult to use on current Macintosh systems.
Open an .rd4a file with Ray Dream Studio on a compatible Macintosh computer. The application is no longer supported, so it may not run on current macOS versions.
If Ray Dream Studio can open the .rd4a file, use the application's available export options to create a more current animation or rendered-output format.
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