convert ricoh theta dual fisheye video to equirectangular format
https://gist.github.com/dinhnhat0401/12910a5fee2e380051c55e5db752b279
https://github.com/dinhnhat0401/defisheye/blob/master/framework/Source/GPUImageDeFisheye.h https://github.com/dinhnhat0401/defisheye/blob/master/framework/Source/GPUImageDeFisheye.m
https://github.com/yasuhirohoshino/thetaRealtimeEquirectangular
If this helpful , thumbup pls!!