Mute when in video mode ?

The following 2 situations will cause the video to be muted.

1. You turn on Mute in the Menu.

2.You pressed the audio record button while video recording. Pressing the audio record button during video recording will mute video. When audio is disabled, the mute icon will appear in the upper right corner of the screen. You just need press the audio button again while video recording to turn on audio.