Latin video, I see, from videre. Adopted in 1930s television engineering as a noun for the picture signal, video versus audio (I hear). The vid- family is enormous: vision, visible, revise, supervise, evidence, and through the Germanic twin root, wise and wit.
The irony the surveillance era noticed: video began as what I do and became what is done to me. CCTV, video evidence, bodycams: the first-person verb now mostly operates in third person, on the subject, without asking.
Videre's PIE root *weid- (to see) also spawned, through Germanic, wise, wit, witness, and guide. Seeing and knowing are the same root across the family: Sanskrit veda (knowledge, the sacred texts), Greek idea (form, thing seen). Every video call runs on the oldest equation in the language: to see is to know.
Who is the I in video, and when did seeing become being seen?