A method may include obtaining, using a head detection model and for an image of a video stream, head detection information for heads detected in the image. The head detection information may include depth distances of the heads. Method may also include obtaining bounding boxes, where obtaining the bounding boxes may include obtaining head bounding boxes for the heads detected in the image, and combining at least two of the head bounding boxes into a combined bounding box according to the depth distances. Method may furthermore include creating, individually, head frame definitions for the bounding boxes, and processing the video stream using the head frame definitions.