recording problems

When i record with my PS4 there isn't any audio in the recording when i have my headset in but when i don't use my headset the audio in the recording is fine so my question is what could be causing this? Thanks for any help you guys can give me :)

Hey Guys, so I was recording a challenge video with a friend, where we had to shoot each other with nerf guns to try and knock a pumpkin of one another's heads (stupid, I know). When it came to me getting shot, my friends decided that, instead of actually shooting the nerf gun. he would get some...