Anyone can contribute on GitHub and contributors will need to accept the ONVIF Contributor License and the Apache license conditions. The ONVIF Contributor License states that the contributing author grants ONVIF a non-exclusive, perpetual, non-remunerative, sub-licensable copyright license to reproduce, distribute, perform, display, and create derivative works of the Contribution solely for the purpose of producing and distributing the relevant ONVIF Network Interface Specification(s). The Apache license ensures that contributions can be jointly developed and that the contributor grants a patent license.