It’s good to realize that as long as the audio is synched to within one frame, it will for all intents be lined up.
This is going to vary, based on the frame rate of the project. 24fps (cinema), as well as 30fps (most video cams) and 60fps can be encountered.
I usually sync my video and audio in a video editing program. Zoom in on the timeline to the frame level, and make sure the peaks match within the same frame.
Most videocams record audio at 48khz, so when recording audio for that purpose, I use the same sample rate.
|