It may be a specific "daily" or "rush" from a film set, where "mm" refers to a scene or roll identifier.
To give you a "deeper" report, I need a little more context: mm.62.mov
An Apple QuickTime Movie container. It typically uses the MPEG-4 codec and is widely compatible with both macOS and Windows. Naming Convention ( mm.62 ): It may be a specific "daily" or "rush"
(If you've seen it, describe the visuals or sounds.) mm.62.mov
(Like Marble Hornets , Backrooms , or a specific YouTuber?)
A default name generated by certain legacy digital cameras or mobile editing apps. ⚠️ Security Context If you received this file from an unknown source :