172_720p.mp4 -

: This is likely a unique ID or index number within a database. In video streaming, it can refer to a specific "profile" or iTag (internal format code) used to identify a stream's settings.

Are you trying to of this video or looking to convert it to a different format? 172_720p.mp4

: If you use a video downloader, it often saves files with these numeric tags to avoid name conflicts. : This is likely a unique ID or

The filename is a generic, machine-generated label typically used by Content Delivery Networks (CDNs) and video hosting platforms to identify a specific version of a video file. 172_720p.mp4