tapeSpeed: add "multiple" for tapes recorded at varying speeds on different regions?

[nkrabben]

I feel it would be more accurate to mark the speed used in each metadata file for each region file.

[genfhk]

How would one identify that the field source.object.tapeSpeed then refers to only the tape speed on that region of the source tape? In the past we have literally said to the vendors "source.object information should not differ between files - that information stays the same because each file comes from the same tape". So, I guess I'm wondering if we are changing/updating the definition of source.object from "the physical object" (singular) to "the physical areas on the object" (multiple). From a programming perspective, vendors would then need to create a new record for the source tape, purely to include a different speed, rather than simply saying "multiple" and making a note of the speeds in the signal notes. I agree this is an issue though, because currently, they are just using whatever is the primary tape speed (if the longest part of the tape is 7.5ips, that's what the value is, and then there is a note about the speed of the other region, which is clunky). This practice (updating source tape info) should also apply to video broadcast standard then.

[nkrabben]

Source contains both object and subobject. Every source section should already identify which subject it is describing.