A method, an apparatus and a computer program product for evaluating demographics of viewers of live-streamed videos. A stream data of a video stream provided to an audience over the Internet via a live-streaming platform may be obtained. The stream data comprise information describing a content of the video stream. Each viewer may be identified in the video stream using a handle. Demographic information of a viewer may be estimated, automatically by a computerized device, based on the stream data and the handle of the viewer. An aggregated demographic information of the audience may be estimated based on the demographic information of a plurality of viewers comprised by the audience. Actions may be performed based on the aggregated demographic information of the audience.