.JMV File Extension

Gameplay recording created by Jnes, an NES emulator for Windows; saves the state of the NES ROM (.NES or .NSF file) as well as user inputs so that the exact gameplay can be replayed in the software; does not contain actual video data (i.e., no .AVI, .MP4, etc. file); can be shared with other Jnes users, who can watch the replay in Jnes.