Adaptive frame packing for 360-degree video coding

A method comprising:

• obtaining a plurality of pictures grouped into a plurality of random access segments (RASs), a picture comprising a plurality of faces, wherein a frame packing configuration corresponding to the plurality of pictures grouped into the plurality of RASs is updated periodically;
• obtaining a first frame packing configuration that indicates a face layout and a face rotation for a first RAS;
• obtaining, for a second RAS, a second frame packing configuration that is different than the first frame packing configuration for the first RAS;
• and
• including a first indication of the first frame packing configuration for the first RAS and a second indication of the second frame packing configuration for the second RAS in a video bitstream.

A device comprising:

• a processor configured to:
• obtain a plurality of indications of a plurality of frame packing configurations corresponding to a plurality of pictures grouped into a plurality of random access segments (RAS), wherein a picture comprises a plurality of faces;
• periodically change a frame packing configuration from the plurality of frame packing configurations corresponding to the plurality of pictures grouped into the plurality of RASs;
• and
• obtain a location of face boundaries associated with the plurality of faces in the picture based on the periodically changed frame packing configuration.