Example methods disclosed herein include determining a first time associated with an event notification embedded in primary media received from an online media provider by an audience measurement entity, the primary media also to be distributed by the online media provider to a consumer device, the determining of the first time including rendering a graphical representation of progress associated with presentation of the primary media, the graphical representation having a length and including the event notification at a location, and determining the first time based on the length and the location of the event notification. Example methods also include determining a second time associated with a media feature of the primary media, and indicating, without accessing the consumer device, that secondary media is also to be embedded in the primary media distributed to the consumer device when a difference between the first time and the second time meets a threshold.