From their merchant agreement:
1. Who We Are.
Welcome to Eventbrite! We are a ticketing and registration platform dedicated to bringing the world together through live experiences. Through our platform, mobile apps and services, we enable people all over the world to create, discover, share and register for events.
7. Permissions You Grant us to Film and Record Your Events.
You grant permission to Eventbrite and its agents to enter onto and remain on the premises (including real property, fixtures, equipment, or other personal property) where your event is hosted (and any other premises you and Eventbrite mutually approve) (collectively, the "Premises") with personnel and equipment for the purpose of photographing and recording the Premises, both internally and externally in connection with the production of digital content on the date of your event(s) and any other dates reasonably requested by Eventbrite (for example, during setup and breakdown for the event) (the "Shoot"). You, on behalf of yourself, your employees, independent contractors, invitees, licensees, performers, exhibitors, attendees, and all other individuals present at the Shoot (collectively, the "Subjects"), grant permission to Eventbrite and its agents, successors and assigns to record and use the image, likeness, appearance, movements, performances, and statements of the Subjects in any live or recorded audio, video, or photographic display or other transmission, exhibition, publication or reproduction made of, or at, the event (regardless of whether before, during or after the event) for any purpose (including, without limitation, the advertising, promotion and other exploitation of Eventbrite's brand, Trademarks, Services, or events hosted on the Sites), in any manner, in any medium or context now known or hereafter developed, without further authorization from, or compensation to, the Subjects or anyone acting on a Subject's behalf. You, on behalf of yourself and the Subjects, agree that Eventbrite, its successors and assigns will own all rights of every nature whatsoever in and to all films and photographs taken and recordings made hereunder (the "Recordings"), including without limitation of all copyrights therein and renewals and extensions thereof, and the exclusive right to use and exploit the Recordings in any manner, in any medium or context now known or hereafter developed, including the right to freely edit the Recordings for use or create new works from the Recordings. You, on behalf of yourself and the Subjects, grant Eventbrite and its licensees the nonexclusive right to use the names and trademarks of you, the Premises, the Events documented in the Shoot, and the Subjects in connection with Eventbrite's and its licensees' use of the Recordings. You are responsible for obtaining, at your own cost, all third party permissions, clearances, and licenses necessary to secure Eventbrite the permissions and rights described above, and you represent that you have done so. Eventbrite is not required to use the Recordings, and you, on behalf of yourself and the Subjects, irrevocably waive any right to inspect or approve the Recordings or any manner in which they are used. Eventbrite may provide credit using your and/or any Subject's names or may refrain from doing so, in its discretion. Further, you, on behalf of yourself and the Subjects, release Eventbrite and Eventbrite's assigns, licensees and successors from any claims that may arise regarding use of the Recordings, including, without limitation, any claims of defamation, invasion of privacy, or infringement of rights of likeness, publicity or copyright.
For all my social networking posts, see my Google+ page