I am syncing up video with audio using the video of the clapboard and the audio track's waveform spike. On my Mac, I hear the sound 2 frames before the waveform spike is seen. Can this be adjusted? If not, where do I line up the video of the clapboard hit? With the sound of the clap or with the visible waveform spike?
Line it up with the visible waveform. What you're hearing is subject to latency delays in your audio playback system.