Extinction of the front LED when pressing on button of video recording, why?

Dirty Bird Posted at 2017-7-2 01:44
It's a setting in the camera options.  Not really necessary with the Mavic as the forward-facing LEDs don't interfere with your shots, but useful on the Phantom series.  You can disable this in the camera settings.

Hello Dirty Bird.
Thanks to your answer to my problem, it's ok now.
So thank you very munch.