One of the most miraculous things about making movies is how we are consistently able to trick the viewer into believing they are watching continuous action when, in fact, they are watching shots set up hours, or even days or weeks apart.
In High Roller, for example, there is a scene where Stuey (Michael Imperioli) wins the World Series of Poker, and Vincent (Michael Nouri) steps out of the cheering crowd to acknowledge him.
The funny thing is, the two shots in the scene were filmed a month apart, in two different cities. But put together it’s fairly seamless.
Why does this trickery work so easily? Well, luckily, the viewer WANTS it to work: the brain automatically tries to create logic out of chaos, which is why we’re able to change perspective so easily within a film.
But sometimes it doesn’t work: all of a sudden we’ll be ripped out of the story by something that just doesn’t let our brains believe the magic. Now, you’d think that it would generally be something visual that would do it, like a change in lighting or bad continuity (a glass is full, then empty, then full) or some acting faux pas. And sometimes it is. But in my experience, the most likely culprit is audio.
See, the subconscious mind is really the one looking for cues about the reality it’s experiencing, and sound operates directly on the subconscious. Further, the quieter the scene, the more important good audio becomes to maintaining the illusion. If you’ve made a film, you know what I mean.
Here’s a couple of considerations that might help you avoid an aural disaster:
Get a good mixer/sound designer on early
It’s been said that post-production starts the first day of production. It’s true, particularly with sound. Make sure to at least consult with a good mixer before you start shooting, particularly if you have an inexperienced location recordist. It’ll inevitably lead to a better mix.
Take the time to get good production sound
As a low-budget filmmaker, you’re probably going to move fast. Just make sure that the take isn’t just good for performance and camera, make it good for audio, too. Yes, you can do ADR in post, but it’s never as good as on location.
Don’t forget room tone
Consistent ambient noise, or “room tone,” is a critical and often overlooked element of a good sound mix for new filmmakers. Before you wrap a location, get at least thirty seconds of good ambient sound.
Subtle SFX are the mark of a pro
The first goal of a good location recordist is to get clean dialogue tracks, and screen out the rest. That means footsteps, door clicks, keys jingling (never mind tires screeching, punches, or gunshots) have to be added in post. The funny thing is, if a viewer registers one of those sounds when it’s not important to the scene, it’s been done badly. Restraint is the measure of a good effects track.
Embrace the split edit
One of the key tricks to manipulating a viewer’s brain is to overlap the audio track from one shot onto the next, creating a different edit point for the audio and video (ergo, split edit). This works particularly well with dialogue, and best when the video edit no longer always lands at the end of a sentence or at an obvious edit point. Once you get this one, things get a lot easier.
Of course, there a lot more aspects to movie sound: we haven’t even touched on music, which has a huge emotional impact on a film. But if you’re just getting into it, paying attention to the quiet moments will really reap rewards in the final mix.