The present application relates to systems, methods, and computer-readable media for deterring video piracy. In aspects, a light source generates an infrared (IR) light spectrum that is projected onto a surface, such as a movie theatre screen. The IR light spectrum may form an watermark that is invisible to members of the audience that are viewing video content projected onto the surface, but that obfuscates at least a portion of video content captured by video recording device that is being used to capture a recording of the video content projected onto the surface. In aspects, a frequency of the IR light spectrum emitted by the light source may be periodically modified to make it more difficult to filter out the watermark.