Marty McFly: Calvin? Why do you keep calling me Calvin?
Lorraine Baines: Well, that is your name, isn't it? Calvin Klein? It's written all over your underwear.
Dr. Emmett Brown: Don't worry. As long as you hit that wire with the connecting hook at precisely 88mph the instant the lightning strikes the tower... Everything will be fine.
George McFly: Lou. Give me a milk... Chocolate.
Marty McFly: Wait a minute, Doc, are you trying to tell me that my mother has got the hots for me?
Dr. Emmett Brown: Precisely.
Marty McFly: Whoa, this is heavy.
Dr. Emmett Brown: There's that word again; "heavy." Why are things so heavy in the future? Is there a problem with the earth's gravitational pull?
Dr. Emmett Brown: Tell me, "Future Boy", who's President in the United States in 1985?
Marty McFly: Ronald Reagan.
Dr. Emmett Brown: Ronald Reagan? The actor? Then who's Vice President? Jerry Lewis? I suppose Jane Wyman is the First Lady!
Marty McFly: Whoa! Wait! Doc!
Dr. Emmett Brown: And Jack Benny is Secretary of the Treasury.
George McFly: Hey, you! Get your damn hands off her!
Dr. Emmett Brown: Oh, my God, they found me, I don't know how, but they found me. Run for it Marty!
Marty McFly: Who? Who?
Dr. Emmett Brown: Who do you think?! The Libyans!
Marty McFly: Holy shit!
George McFly: Do you really think I oughta swear?
Marty McFly: Yes, definitely. Goddamn it George, swear.
Marty McFly: Wait a minute, Doc. Ah... Are you telling me that you built a time machine... Out of a DeLorean?
Dr. Emmett Brown: The way I see it, if you're gonna build a time machine into a car, why not do it with some style?
Marty McFly: [watching a Honeymooners episode in 1955.] Hey, hey, I've seen this one. I've seen this one. This is a classic. This is, uh, where Ralph dresses up as a man from space.
Milton Baines: What do you mean, you've seen this? It's brand new.
Marty McFly: Yeah, well, I saw it on a...rerun.
Milton Baines: What's a rerun?
Marty McFly: You'll find out.
Marty McFly: You know, Doc, you left your equipment on all week.
Dr. Emmett Brown: My equipment. That reminds me, Marty. You better not hook up to the amplifier. There's a slight possibility of overload.
Marty McFly: Yeah, I'll keep that in mind.
Lorraine Baines: Will we ever see you again?
Marty McFly: I guarantee it.
Lorraine Baines: Our first television set. Dad just picked it up today. Do you have a television?
Marty McFly: Well, yeah! You know we have... Two of them.
Milton Baines: Wow! You must be rich!
Stella Baines: Oh, honey, he's teasing you. Nobody has two television sets.
Marty McFly: If you guys ever have kids and one of them when he's eight years old accidentally sets fire to the living room rug... Go easy on him.
Marty McFly: Let's see if you bastards can do 90.
George McFly: Last night, Darth Vader came down from planet Vulcan and told me that if I didn't take Lorraine out that he'd melt my brain.
Marty McFly: Doc, we better back up. We don't have enough road to get up to 88.
Dr. Emmett Brown: Roads? Where we're going, we don't need roads.
Biff Tannen: I have your car towed all the way to your house and all you've got for me is *lite* beer?
Marty McFly: Do you know where Riverside Drive is?
Sam Baines: It's on the other end of town, a block past Maple. East end of town.
Marty McFly: A block past Maple? That's John F. Kennedy Drive.
Sam Baines: Who the hell is John F. Kennedy?
Doc Brown: Now, if my calculations are correct, when this baby hits eighty-eight miles per hour, you're gonna see some serious shit.
Answer: The video camera was in the DeLorean. With the right kind of adapter, which was common enough in the 80s that Doc might've had it on the camera or been able to jury-rig something in the 50s, it would have been possible to connect it into the antenna screws in the back of the TV like an old Atari and play it directly from the camera.
Captain Defenestrator
TVs in the 50s had a two prong antennae connection (two screws in the back that you put a prong antennae into) TVs in the mid 80s also had this. The coax connection (the one wire that screws in) was starting to become common, but, the two prong connection would have been more likely on any given TV at the time, so, whatever wire they used to preview recordings probably had that. very convenient that Marty brought those cords with him.
An old Atari 2600 RF Adapter would be how one would link a video camera to an old-fashioned television. A simple-enough part that Doc could probably make one with 1950s technology.
Captain Defenestrator