Ok, so I got this advice.
"DAT? Do they even use that anymore? You need video editing software.
Record audio on your computer or iPad
Sync in software (start both audio & video recording, then do a hand clap right at the camera. It will be easy to sync since it's so easy to see and hear)"
This sounds like it's true. Can someone on this forum break it down a bit for me. Keep in mind, I know nothing about audio engineering/recording.