Because filenames like this are typically generated automatically by servers or screen-recording software, the content can vary. To help me put together the text for you, could you describe:
Is it a meme, a tutorial, a news clip, or a movie scene? 1618362087823-0.mp4
This will allow me to draft the transcript or summary you're looking for. a news clip
Where did you find the file, and what is the general message? and what is the general message?