1. A system comprising: one or more cameras; a device configured to be connected to the one or more cameras, the device comprising one or more processors and memory storing instructions that, when executed by one of the processors, cause the device to obtain, from at least one of the cameras, a set of images of a plurality of individuals at a location, select, from the set of images, for each individual, a preferred facial image for the individual, determine whether lip movement of one of the individuals is visible in the set of images, and select, based on whether lip movement of one of the individuals is visible in the set of images, either a facial recognition algorithm or an audio triangulation algorithm to determine which individual is speaking.