iff_hevc_tile_multiple_items_tbas.heic is missing rloc

[bradh]

Summary

iff_hevc_tile_multiple_items_tbas.heic is missing rloc

Steps to reproduce

The item properties for iff_hevc_tile_multiple_items_tbas.heic are shown in

FileFormatConformance/data/file_features/published/heif/iff_hevc_tile_multiple_items_tbas_gpac.json

Lines 300 to 395 in db7fdbe

	"ItemPropertiesBox": {
	"@Size": "245",
	"@Type": "iprp",
	"@Specification": "iff",
	"@Container": "meta",
	"ItemPropertyContainerBox": {
	"@Size": "191",
	"@Type": "ipco",
	"@Specification": "iff",
	"@Container": "iprp",
	"ImageSpatialExtentsPropertyBox": [
	{
	"@Size": "20",
	"@Type": "ispe",
	"@Version": "0",
	"@Flags": "0",
	"@Specification": "iff",
	"@Container": "ipco",
	"@image_width": "1920",
	"@image_height": "1088"
	},
	{
	"@Size": "20",
	"@Type": "ispe",
	"@Version": "0",
	"@Flags": "0",
	"@Specification": "iff",
	"@Container": "ipco",
	"@image_width": "3840",
	"@image_height": "2160"
	}
	],
	"PixelAspectRatioBox": {
	"@Size": "16",
	"@Type": "pasp",
	"@Specification": "p12",
	"@Container": "video_sample_entry ipco",
	"@hSpacing": "1",
	"@vSpacing": "1"
	},
	"HEVCConfigurationBox": {
	"@Size": "127",
	"@Type": "hvcC",
	"@Specification": "p15",
	"@Container": "hvc1 hev1 hvc2 hev2 encv resv ipco dvh1 dvhe",
	"HEVCDecoderConfigurationRecord": {
	"@nal_unit_size": "4",
	"@configurationVersion": "1",
	"@profile_space": "0",
	"@tier_flag": "0",
	"@profile_idc": "1",
	"@general_profile_compatibility_flags": "60000000",
	"@progressive_source_flag": "0",
	"@interlaced_source_flag": "0",
	"@non_packed_constraint_flag": "0",
	"@frame_only_constraint_flag": "0",
	"@constraint_indicator_flags": "0",
	"@level_idc": "150",
	"@min_spatial_segmentation_idc": "0",
	"@parallelismType": "2",
	"@chroma_format": "YUV 4:2:0",
	"@luma_bit_depth": "8",
	"@chroma_bit_depth": "8",
	"@avgFrameRate": "0",
	"@constantFrameRate": "0",
	"@numTemporalLayers": "1",
	"@temporalIdNested": "1",
	"ParameterSetArray": [
	{
	"@nalu_type": "32",
	"@complete_set": "1",
	"ParameterSet": {
	"@size": "24",
	"@content": "data:application/octet-string,40010C01FFFF016000000300000300000300000300969702"
	}
	},
	{
	"@nalu_type": "33",
	"@complete_set": "1",
	"ParameterSet": {
	"@size": "49",
	"@content": "data:application/octet-string,42010101600000030000030000030000030096A001E020021C7F965E491B61E5E4924FE79FCF2FFFFFFCFE7F3F3F9DB480"
	}
	},
	{
	"@nalu_type": "34",
	"@complete_set": "1",
	"ParameterSet": {
	"@size": "8",
	"@content": "data:application/octet-string,4401C59095849412"
	}
	}
	]
	}
	}
	},

- ispe, pasp and hvcC.

To make sense of the tiling, the arrangement of tiles is required. ISO/IEC 23008-12:2022 Section 6.5.7.1 describes the relative locations, and requires that an rloc descriptive item property be provided if the item has a tbas item reference to another image item (which is true for items 2, 3, 4 and 5 - see

FileFormatConformance/data/file_features/published/heif/iff_hevc_tile_multiple_items_tbas_gpac.json

Lines 236 to 276 in db7fdbe

	"ItemReferenceBox": [
	{
	"@Size": "14",
	"@Type": "tbas",
	"@Specification": "p12",
	"@Container": "iref",
	"@from_item_id": "2",
	"ItemReferenceBoxEntry": {
	"@ItemID": "1"
	}
	},
	{
	"@Size": "14",
	"@Type": "tbas",
	"@Specification": "p12",
	"@Container": "iref",
	"@from_item_id": "3",
	"ItemReferenceBoxEntry": {
	"@ItemID": "1"
	}
	},
	{
	"@Size": "14",
	"@Type": "tbas",
	"@Specification": "p12",
	"@Container": "iref",
	"@from_item_id": "4",
	"ItemReferenceBoxEntry": {
	"@ItemID": "1"
	}
	},
	{
	"@Size": "14",
	"@Type": "tbas",
	"@Specification": "p12",
	"@Container": "iref",
	"@from_item_id": "5",
	"ItemReferenceBoxEntry": {
	"@ItemID": "1"
	}
	},

).

Affected specifications

ISO/IEC 23008-12:2022.

Affected files

• iff_hevc_tile_multiple_items_tbas.heic