... and if a uniform motion blur isn't a major concern & if a manually locked shutter speed feels too limited in changing exposure environments when videoing... you can use a auto shutter+ND as the ND filter slow down the shutter in general, not...
If your drone model have a native DJI waypoint mode it should be possible with below Litchi utility...
Litchi Waypoint Mission to DJI Fly Waypoint Mission Converter