How to fix audio that drifts out of sync with video in editing software. Detach the audio, play in slow motion to see which track is ahead, then nudge the video layer by fractions of a second until the lips match the sound. Professionals use clapboards to create waveform spikes that make syncing easier.
500 milliseconds
"Detach audio" (click the clip layer and choose detach audio).
This is my out of sync recording. It's extremely out of sync. It's 500 milliseconds out of sync. We're going to fix that. To fix this, we need to first separate the audio from the video. To do that, you'll simply click on your script layer and this one that says detach audio. Click on that and then right click on it again. Nothing appears to happen at first, but something has happened, which is that you now have this edit sequence option. Click on that. And this is inside the sequence where we have a separate audio layer, this green one with the sound waves, and we have a video layer. The first thing we need to do is figure out if the video is ahead of our audio or if our audio is ahead of our video. So I'm going to go ahead and play this, and it helps if you play it in slow motion. This can give you a better idea of which component is behind and which one's ahead. This is my. So as you can see, my lips started moving before the audio came in. So what that tells me is I need to move the video back later relative to my audio layer. And so what I can do is just click on my video layer. It's this, this top one here. I can click on it and I can slide it to the right like so. And if you look at the numbers up above, you see there's zero seconds and then there's one second. So I moved it just a hair, just a fraction of a second, maybe a tenth of a second or a fifth of a second forward. And now let's see how this sounds. This is my out of sync recording. It looks a bit better. Let me play it at full speed. It's extremely out of sync. It's 500 milliseconds out of sync. That was actually pretty good. I got it pretty spot on on that, that first go. But this usually takes me several tries. I have to adjust it left and right just a little bit at a time. And every time you make an adjustment, you back up a bit, play it, see if it's in sync, and if it's not, keep adjusting it until it is. And another tip for you. You know, in Hollywood, they have those clapboards. The reason they do that is they have separate mics that are going with separate cameras. So to match that all up in post, they're looking for that clap. It creates a spike on the sound waves in the editing software and they can match those spikes up to achieve perfect sync between their video and their microphones.
