If you do a lot of video work there will probably come a time where you will end up recording your audio separate from your video. Once you get the video file and audio file into your editing software you will need to sync the audio so it lines up with the video.
When I record videos I record the video on either the D500 or Canon XA20 and the audio on a Zoom H6. Just a note, you need to make sure the camera also records the audio. Without scratch audio from the camera it is very difficult to sync the clean audio to the video. Once I start the recording on both the camera and the Zoom before I start talking I always clap.
What clapping does is creates an audio spike on both the camera scratch audio and the Zoom clean audio. When Im done recording I import both the camera video and Zoom audio clips into the editing software. From there I can easily line up the audio spikes from the clap. Then all I have to do is delete the camera audio and keep the clean audio synced up with the video.
Check out the video above to see how this is done.