Files with qtv file extension can be found as part of QuickTime media player.
QTV file extension - QuickTime Virtual Reality data
What is qtv file? How to open qtv files?
File type specification:
The qtv file extension is related to the QuickTime media player and used for some sort of virtual reality file.
Most likely some old format without support. No further information could be found.
MIME types:
x-world/x-qtvr
This qtv 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.