You can create a form yourself or seek professional advice. The form needs to include the following at bare minimum:
Current date;
Full legal name of the person depicted in the content;
Date of birth of the person depicted in the content;
Full years of age of the person depicted in the content;
Consent of the person in question to be depicted in the content;
Consent of the person in question to allow for the public distribution of the content and to upload the content to the website;
Consent of the person in question to have that content downloaded (should downloads be enabled).
A written and executed consent form can look like this:
I, Mary Clair Austin of 23 years of age, born on 1 August 1998 consent to be depicted in the video(s) (image(s)) created here today with co-performer Full Name. I consent to public distribution of videos/images of me through YOURWEBSITEURL as well as I consent to the videos/images of me to be downloaded should co-performer Full Name decide to enable other users to do so.
October 15th, 2021 (signature) Mary Claire Austin
IMPORTANT NOTE FROM OUR LEGAL TEAM
A document created by you this way is only intended to be used for purposes of documenting consent to comply with Credit Card Association requirements. This document is not intended to grant any rights between either party regarding the content. To protect your rights in the content, you should seek professional legal advice. If you do not know an attorney, you can engage adult law at any time to assist.