I presume there are no "standard" ways of handling documentary subjects (by subject, I mean the actual person the documentary is about) as every situation is different.

However, I have a subject who is integral to the documentary who is asking for copy of the footage pertaining to them and rights to use the footage so long as it doesn't conflict with my project.

In general, I'm just curious what rights the subject "should" have, and what's the smartest way to handle this.

Obviously I'm not compensating them for participation in the documentary, but I'm not sure if it's smart to give away my footage, although perhaps with proper language, my production would be unaffected.

Also, for any seasoned documentarians, are there any other issues that may come up with subjects that I should know about beforehand?

Thanks