The clip's exact origin is undocumented, which is typical of user-uploaded soundboard audio: a short snippet gets ripped, titled phonetically and passed around without credits. 'Salut, c'est moi Marc' is simply everyday French for 'hi, it's me, Marc,' and that plainness is the point. The sound circulates in French-speaking meme circles as a tongue-in-cheek self-introduction, often sent as a reaction audio in chats or dropped at the start of edits to pretend the video is personally hosted by Marc.