I have made 3D images before that can be posted on Facebook. The process is pretty simple. You simply paint light grey over areas that are in the foreground and work your way back to progressively darker greys in the background. Since the sheep in my Procreate painting were already on separate layers, I just had to duplicate each layer and alpha lock them. I them painted each a different shade of grey. I names this file that exact same name as the color jpg of the same scene and added _Depth to the end of the file name.
In Facebook I loaded both images at the same time and then a cube appeared over the render area with 3D in the middle of it. Maybe a minute later the image appeared in my thread and when the phone of tablet is moved the sheep seem to be in deep space due to parallax. On my laptop, a mouse had to be positioned over the image to get the 3d effect.
This effect is perfect but the camera is stuck in place. I don’t think there is a comparable solution in Premiere Pro for achieving this 3d effect with a simple depth map. I am still researching to try and find the perfect solution. I suspect that I might need another program called After Effects to achieve a full 3D parallax look as I composite my many painted layers.