The specific file appears to be a raw video clip or screen recording from the anime editor zneptun (also known as Neptun), likely originally distributed as part of a project file or an editing pack. How to Find This File
: Recordings of the editing process (After Effects/Alight Motion) used for tutorials. Overlays : Custom-made effects included in an "Edit Pack". Download zneptun 20221028 0027 mp4
While a direct download link for this specific filename is not hosted on public archives, you can typically find Neptun's assets through their official creator channels: The specific file appears to be a raw