Depending on your needs, here are three ways we can draft this: Option 1: Incident or Evidence Report
Raw footage containing [General Subject]. Integrity verified; no signs of tampering or corruption. To make this write-up "proper," tell me: What is happening in the video ? Who is the audience (a boss, the police, or friends)? 3240603028044.mp4
What is the (to report a crime, save a memory, or explain a bug)? Depending on your needs, here are three ways