Duplicate 'colr' box definitions

[palemieux]

The colr entry at CSV/item-properties.csv duplicates that at CSV/sample-entries-boxes.csv. The defining specification for the former explicitly states that The colour information 'colr' descriptive item property has the same syntax as the ColourInformationBox as defined in [the latter]

[dwsinger]

Right, that box is valid as (a) a sample-entry extension and (b) an item property, which are formally separate namespaces. So it's registered into both. What is the issue?

[palemieux]

which are formally separate namespaces.

Oh. This not clear. Where are the "Item Property" and "Sample-entry" namespaces defined?

[dwsinger]

well, item properties are included in the item property container (only). sample entry extensions are in sample entries (only). we use the same 4CC since it's the same syntax.

[palemieux]

item property container

Do you mean as as elements of ItemPropertyContainerBox as specified in ISO/IEC 23008-12?

sample entry extensions are in sample entries (only)

Do you mean as elements of extensions of SampleEntry as specified in ISO/IEC 14496-12?

[dwsinger]

yes

[palemieux]

Ok. I suggest adding these clarifications in the corresponding .csv files and/or below the relevant heading in the generated pages, e.g. http://mp4ra.org/#/item_properties

[dwsinger]

we'll look at more specific links between the tables and the defining context.