"Today, we’re publishing the remaining details about creating VR180 videos on github"
https://github.com/google/spatial-media/blob/master/docs/vr180.md
so any developer or manufacturer can start engaging with VR180.
https://developers.google.com/vr/reference/cardboard-camera-vr-photo-format
"Cardboard Camera VR Photo Format
A VR photo is a stereoscopic panorama with sound. Cardboard Camera stores elements of a VR photo as metadata in a JPEG file. The container image acts as the left eye image, while the right eye and an (optional) audio file are stored as base64-encoded binary blobs in the image’s metadata. This allows the photo to be backwards-compatible with ordinary image viewers, which recognize the container (left eye) image and display it as a 2D panoramic photo. Metadata is stored using Adobe’s XMP standard, and is further described in their specification."
https://developers.google.com/vr/reference/cardboard-camera-vr-photo-format
https://www.blog.google/products/google-vr/how-publish-vr180/
https://venturebeat.com/2018/04/10/google-opens-vr-video-and-photo-format-vr180-promises-new-publishing-tools/
Google opens VR video and photo format VR180, promises new publishing tools
JEREMY HORWITZ@HORWITZ APRIL 10, 2018 6:46 AM