Method and device for generating/receiving media file including NAL unit array information, and method for transmitting media file

A media file receiving apparatus comprising a memory and at least one processor,

• wherein the at least one processor is configured to:
• obtain first information indicating whether a network abstraction layer (NAL) unit of a predetermined type is capable of being present in a stream of the video data, from a decoder configuration record in the media file;
• and
• process the video data based on the first information,
• wherein, based on a sample entry carrying the NAL unit array of the predetermined type being a VVC sample entry,
• the first information is constrained to have a predetermined value for the NAL unit array of the predetermined type and is allowed to have a value other than the predetermined value for a NAL unit array of a type different from the predetermined type.

A media file generating method performed by a media file generating apparatus for generating a media file of a predetermined format including video data, the media file generating method comprising:

• encoding video data;
• generating a decoder configuration record including first information indicating whether a network abstraction layer (NAL) unit of a predetermined type is capable of being present in a stream of the video data;
• and
• generating the media file based on the encoded video data and the decoder configuration record,
• wherein, based on a sample entry carrying the NAL unit array of the predetermined type being a VVC sample entry,
• the first information is constrained to have a predetermined value for the NAL unit array of the predetermined type and is allowed to have a value other than the predetermined value for a NAL unit array of a type different from the predetermined type.

A media file generating apparatus comprising a memory and at least one processor,

• wherein the at least one processor is configured to:
• encode video data;
• generate a decoder configuration record including first information indicating whether a network abstraction layer (NAL) unit of a predetermined type is capable of being present in a stream of the video data;
• and
• generate a media file based on the encoded video data and the decoder configuration record,
• wherein, based on a sample entry carrying the NAL unit array of the predetermined type being a VVC sample entry,
• the first information is constrained to have a predetermined value for the NAL unit array of the predetermined type and is allowed to have a value other than the predetermined value for a NAL unit array of a type different from the predetermined type.