Tags : 400 file windows

How FileViewPro Supports Other File Types Besides 400

May 1, 2026 Uncategorized

A 400 file usually refers to a file with the `.400` extension, and in most cases it is associated with video archive data created by DVR or security camera systems. Rather than being a standard media format like MP4 or AVI, it is often part of a proprietary recording system that stores surveillance footage in …