A content streaming system and methodology for facilitating the management of content streaming. A content delivery service provides streaming content that is organized according to a set of encoded content chunks. An encoding component generates encoded chunk data for transmission to requestors. A content delivery management component can determine configuration information that indicates the size of the content chunks. The content delivery management component can then receive encoded data but will not replicate and propagate the received encoded data to distribution endpoints of the content delivery service until complete content chunks are ready for transmission. A video playback application processes the set of encoded content chunks to dynamically form a content segment for live video streaming.