Various client devices include displays and one or more image capture devices configured to capture video data. Different users of an online system are associated with client devices that exchange information captured by their respective image capture devices. When exchanging information, presentation of content to users associated with different client device may be initially synchronized across the client devices. To synchronize content presentation, a client device initiating presentation of the content transmits a request identifying the content and an initial time to other client devices. The initial time is greater than than a maximum return time or latency in a network coupling the client devices and the online system from a time when the request is transmitted. A client device determined to be out of synchronization with one or more other client devices receives a command to modify a rate at which the content is presented to reestablish synchronization.