VIEWPORT-AWARE QUALITY METRIC FOR 360-DEGREE VIDEO

Techniques and systems are provided for processing 360-degree video data. For example, 360-degree video data can be obtained that includes a representation including spherical video data mapped to faces of a geometry. The representation includes a viewport corresponding to an orientation in a 360-degree scene. A window can be determined on a spherical representation of the 360-degree scene at the orientation corresponding to the viewport of the representation. The window is determined based on a front face of the geometry corresponding to the representation. A viewport-aware quality metric can then be determined for the window on the spherical representation of the 360-degree scene.