Constant AV_SPHERICAL_CUBEMAP

pub const AV_SPHERICAL_CUBEMAP: u32 = 1; // 1u32

Video frame is split into 6 faces of a cube, and arranged on a 3x2 layout. Faces are oriented upwards for the front, left, right, and back faces. The up face is oriented so the top of the face is forwards and the down face is oriented so the top of the face is to the back.