Below you will find detailed information of all formats that are supported by theViewer.
Before I go into details I just wanted to let you know that we support both - cubestrips aka cubemaps and we do support spherical images and also 360 videos
And yes, of course, we support stereo in both cases! :)
I think it's also important to share at this moment that we don't modify your content and never compress it, so what you upload to the app is what you will see in the app.
In the newest release of the app ( 2.5.X ) we also dramatically increase the display quality of cubestrip because our app is splitting the image into 6 separate files and it allows us to bypass the max texture size restriction on all devices.
So now you can upload pretty much any resolution and that's why cubestrip is our preferred format.
Two samples of a stereo cubestrip that you can download and test
cubemap stereo 1x12 16380 x 1365 px - oculus sample
cubemap mono 1x6 8190 x 1365 px - oculus sample
Here is also a description of all faces in a stereo cubestrip from VRay
And now few samples of supported Spherical Images and supported resolution
spherical stereo 1x1 6144 x 6144 px - oculus sample
Supported 360 Video Formats