DMSD is a file extension that goes with the MyDVD DVD - Video authoring and recording program. A DMSD is a project file that contains information about all files used in a project and their locations. It does not contain any multimedia materials.

MyDVD is a Roxio tool that is part of the Roxio Creator suite for Microsoft Windows. DMSD files can also be used for projects with movies for CDs and Blu-ray discs.