Monoscopic / stereoscopic side-by-side / stereoscopic top-bottom images or videos that were captured with a 360° camera
Monoscopic / stereoscopic side-by-side / stereoscopic top-bottom stock footage from the internet
Monoscopic / stereoscopic side-by-side / stereoscopic top-bottom CGI images or videos that were rendered out of a 3D program (this is how you can also work with CAD data)