system/Library/Frameworks/mediatoolbox.framework/RegionalSystemSoundsThatShareBehaviour.plist
파일을 열어서
<.key>J<./key>
<.dict>
<.key>BeginVideoRecording<./key>
<.string>BeginVideoRecordingAlwaysHeard<./string>
<.key>CameraShutter<./key>
<.string>CameraShutterAlwaysHeard<./string>
<./dict>
<.key>KH<./key>
<.dict>
<.key>BeginVideoRecording<./key>
<.string>BeginVideoRecordingAlwaysHeard</string>
<.key>CameraShutter</key>
<.string>CameraShutterAlwaysHeard</string>
<./dict>
부분을 삭제하고 재부팅 하시면 됩니다.