It does take practice, but again, usually only a minority of the dialogue is looped. You get as many tries as it takes to get it right.
And most of that time, it’s a long shot and/or the character’s back is turned.
Whereas realitychuck and gotpasswords seem to imply that “on-camera” dialogue is rarely used. Which is true, or does it entirely depend on the movie?
Just thought I’d add: the term “Looping” refers to when the small section of film that they’re trying to recreate the dialogue for, is replayed over and over and over, in a “loop”. It’s still referred to as that by most people, even though ADR is the technical term.
And on a tangentially related note, “Foley” was named after a man, Jack Foley, who pioneered the technique of recreating sound effects artificially.
Almost all dialogue in scenes shot on sets in a movie studio is recorded on camera.
Is ADR also the method they use to change “Fucking asshole” to “Freaky imbecile”? For TV broadcast, I mean? IS this normally done in post, or is it done months or years later specifically for TV?
If you’re lucky, the actors will do a “sanitized” version on the looping stage so the line, while not as originally intended, will at least be in their voice for the ABC Family Network version and not sounding like someone grabbed the nearest stagehand to say “darn” and dubbed that in for a TV release.
The TV version of The Blues Brothers comes to mind as a really bad example of dubbing in someone else’s voice to say things like “shoot” and “fudge.” Nothing automatic about it - in this case, it sounds like someone just did a punch-in/punch-out audio edit with minimal care. If they were any worse at it, they’d be heading into Saturday afternoon kung-fu flick territory.