Maybe I can help here......
I have written a similar utility which allows me to fly Litchi Missions virtually in Google Earth. The virtual mission honors the camera orientation and gimbal angles specified in Litchi so that flying the mission in Google Earth looks very similar to the real mission when it is eventually flown with the drone.
I use it to pre-check my missions to make sure all the heading and gimbal settings are optimal and that the camera will actually 'see' everything that I intend.
It runs on my win10 x64 machine but I think it should run on x86 as well.
If there is any interest then just ask and I can try to upload a copy.