Systems and methods are disclosed herein for generating supplemental content by generating new content structures from content segments. A content segment that includes a plurality of objects may be received. A content structure based on the content segment may be generated, and a primary object may be identified from the plurality objects. The primary object may include first and second mappings indicating first and second time periods when the primary object appears in the content segment. A new content structure may be generated that includes the primary object, where the first and second mappings may be concatenated. A new content segment may be generated based on the new content structure, and this new content segment may be transmitted to an electronic device.