Opinions for some use cases in relation to constraints

Hi

At Pearson we're looking at using ODRL (in RDF). We're getting down into
the detail of use cases and there is one specific use case we can't make
fit:

How would we specify that we can only use a segment of video, say from 90s
in to 120s in. There are no temporal equivalents to absolutePosition and
absoluteSize

As another point of clarification of understanding. Is timeInterval for use
cases such as 'I can download 3 times a year every year' or 'I can sell 5
copies each week'?

Any insights welcome.

Thanks

Paul