http://youtu.be/lLQOyaYkhkA When you record your audio on a separate recorder from your video, sometimes you can experience audio drift. This is where you sync up the start of the video clip to the start of the audio clip but over time, the audio becomes more and more out of sync with the video. This can be incredibly frustrating and you may even have to reshoot.
In this episode we’ll talk about some things you might do to prevent this issue in the first place (hint: smart phones tend to experience this issue more than other cameras, be sure to set your sample rate on your audio recorder so that it matches the camera’s audio sample rate). And if all that fails, here’s a tool in Adobe Audition called Automatic Speech Alignment that might be able to solve this problem for your drifting audio.