: It uses H.264 or H.265 (HEVC) compression to provide high-quality video at relatively small file sizes.

: Digital Video Recorders (DVRs) often export clips using the year and timestamp as the primary identifier. Technical Details of .mp4

If you have found a file with this name and are unsure of its contents:

: Always scan unknown files with antivirus software before opening, especially if they were downloaded from an untrusted source.