Stereo Panoramic Movie Capture exported of darkness color

hi everyone nice to meet you !
Im Masa
we made VR content for gearVR into Japan
but we have to some problem
this data must be a video
Because gearvr can not handle it this UE4 quality(oculas)

so somebody help us

It feels like that plugin is not working doing well
Just like my English

the plugin is made image files
but result is too darkness color


we cant fix this problem
somebody help me