1. A method comprising: while a conference is occurring, generating activity records for activities related to the conference in response to detecting occurrence of the activities; wherein each activity record includes at least (a) information about the corresponding activity, and (b) timing data that indicates when, within the conference, the corresponding activity occurred; after the conference has ended, extracting the timing data from an activity record for a particular activity that occurred during the conference; and using the timing data to locate a position, within a recording of the conference, that corresponds to when the particular activity occurred; wherein the method is performed by one or more computing devices.