Why is there no sound when I make a video?

"Hi,

1. On playback, have you ensured that the Volume is turned up?

This shows how to adjust (step 5) and where to check on the screen (See #9 on picture)

2. Have you ensured that the microphone is not covered? This shows its' location."

"If you have the waterproof case on, you more than likely won't be able to hear any sound since sound can't get to the microphone. Boo.

If you have the case off and still cannot hear anything, please make sure you have the volume turned up on the playback mode!"