A d3v file extension is related to the Datel Max Media Player and used for its video files.
D3V file extension - Datel video data
What is d3v file? How to open d3v files?
File type specification:
The d3v file extension is associated with the Datel Max Media Player. The d3v file contains video data.
Most likely some old format without support. No further information could be found.
This d3v file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.