Method and device for transmitting and receiving metadata about plurality of viewpoints

A 360-degree video reception apparatus, the apparatus comprising:

• a receiver configured to receive 360-degree video data including encoded pictures;
• a data decoder configured to decode the encoded pictures;
• and
• a renderer configured to render the decoded pictures based on metadata derived,
• wherein:
• the metadata includes viewpoint information,
• the viewpoint information includes viewpoint position information indicating an x component, a y component, and a z component of a position of a viewpoint,
• the viewpoint information includes transition effect information,
• the transition effect information includes transition effect type information, and
• the transition effect type information represents a type of transition effects when switching to the viewpoint.

A 360-degree video data processing method performed by a 360-degree video transmission apparatus, the method comprising:

• acquiring 360-degree video;
• generating pictures;
• encoding the pictures;
• generating metadata;
• and
• performing processing for storage or transmission of the encoded pictures and the metadata,
• wherein:
• the metadata includes viewpoint information,
• the viewpoint information includes viewpoint position information indicating an x component, a y component, and a z component of a position of a viewpoint,
• the viewpoint information includes transition effect information,
• the transition effect information includes transition effect type information, and
• the transition effect type information represents a type of transition effects when switching to the viewpoint.

A 360-degree video transmission apparatus, the apparatus comprising:

• a projection processor configured to generate pictures of 360-degree video;
• a data encoder configured to encode the pictures;
• a metadata processor configured to generate metadata;
• and
• a transmission processor configured to perform processing for storage or transmission of the encoded pictures and the metadata,
• wherein:
• the metadata includes viewpoint information,
• the viewpoint information includes viewpoint position information indicating an x component, a y component, and a z component of a position of a viewpoint,
• the viewpoint information includes transition effect information,
• the transition effect information includes transition effect type information, and
• the transition effect type information represents a type of transition effects when switching to the viewpoint.