I found someone using the closed beta to make a video, and I wonder if it infringes on your intellectual property rights. If you think it does, I'll let him know. Looking forward to your reply.
It depends a bit on the content of the video. Generally the closed beta version of the game is supposed to be an exclusive Patreon reward for those supporting the development of the project. Some parts of it however have been disclosed by us in public streams and shown in teaser screenshots, and so those specific parts are no longer exclusive in the same way and should be fine to feature in a video. If the content of the video has not been publically disclosed however, we ask that the person in question respect the exclusivity of the content and the trust we put in our closed beta testers when we share it with them.