Add time offset

[psychotik2k3]

Is there an existing feature request for this?

• [X] I have searched the existing open and closed issues

Feature description

Could you please add the possibility to add offset ? it's because i want to put the osd on my gopro footage and i know the time offset with the goggles dvr. But i don't want to cut my gopro footage as it was started before the arming.

thanks