: Refers to the High Definition (HD) resolution, which uses 720 horizontal scan lines (1280 pixels wide).
: Indicates this is the sixth clip or segment in a series from that day. 20220606-6_720pmp4
If you are looking for the specific content within a video you found, it likely belongs to a private archive, a specific workplace internal system, or a local security DVR. : Refers to the High Definition (HD) resolution,
"20220606-6_720p.mp4" appears to be a standard naming convention for a video file recorded or exported on , specifically the sixth file generated that day, in 720p HD resolution ( a specific workplace internal system
While there is no public "official" document by this exact name, this file format is commonly associated with: