In Photoshop I increase the canvas size 2 create the appropriate ratio, then usually just fill with a blue “sky” colour.
I find that most assisted fills create strange marks, since they don’t complete the warped projection as it would be needed.
You can google for some 360 pano skies that you can blend in that look good as far as completing the sphere … but, unless you have loads of time to do all the blending needed, and knowing the pano was taken in a drone, they still look fake.
I use an iPad mini2 to fly the beast and it’s been fine till recently. I have had some issues with the screen losing some pixels, volume being intermittent and now the Pano mode has gone. I will try it on my android later and if it works there then I’ll guess the pad is the issue. I’m more after the little globes the DJI app kicks out as they’re a little bit of fun. I tried using the Mac PTGUI software but it didn’t seem to let me do a globe which is all I’m after really. Lightroom seems to not really help either.
I thought I’d created them in PTGui … I’ll double check - been ages since I’ve used.
On Android there are other TP making apps that will stich from the higher-res images, too … or create from the Go4 360 … should that part be successful, of course. So I’m assuming the same is true on iOS.
Edit: Yup - PTGui does TPs.
This is only a screen grab from the app without exporting ….