I searched the forum and found no answers regarding this, so hopefully this isn't an unsolvable situation. The past few videos I've recorded have had an obnoxious buzzing sound during playback, and I'm not sure why. It doesn't sound like a ground loop, plus ground loops shouldn't happen when not plugged into an outlet. Strange. Thanks In advance!
Here are a few things to try. Test after each one.
Force the app to close, then open the Camera app again. Restart your device, then open the Camera app again. Take off any case or cover on the phone, and try it again. Try recording video with both the front and rear cameras. If you hear the buzzing on only one camera, take your device to an Apple Retail Store or Authorized Service Provider for more help. If you hear the buzzing on both recordings, backup and erase your iOS device and then set it up as a new device.
Get help with the camera on your iPhone, iPad, or iPod touch - Apple Support
Did you ever fix the problem? I've noticed mine does the same.
6S Audio on Video Playback Buzzing
