Our primary and default license is:
All Media, Worldwide, in Perpetuity use. Specifically, "the purchaser may use the materials in all media, including documentaries, entertainment, commercial advertising, publishing, and other media (both broadcast and non-broadcast), worldwide, as they see fit and as often as they like without incurring royalties or additional fees. The purchaser may not resell or redistribute the materials. The rights are non-transferable (however, end-clients such as broadcast companies may use the footage as part of productions produced by the purchaser of the footage). The purchaser (and their end-clients should the purchaser be a production company) shall be the sole user of the material under the purchase and may not share the materials with others without the written approval of Pronghorn Productions. The rights to the materials are non-exclusive. Pronghorn Productions reserves the right to sell the material to others and/or to use the material in products produced by Pronghorn Productions.
Purchases of resolutions smaller than the original footage are amended as follows: The purchaser shall only use the footage in a resolution equal to or smaller than the resolution they paid for.  (This will require the purchaser to render to the smaller resolution.)
Free clips use the same license but are amended as follows: The purchaser shall attribute (credit) HDNatureFootage.net in any use and productions that make use of the footage, specifically, by listing HDNatureFootage in the end credits.
Contact us if you prefer to use a different license.