关键词: 命名数据网络, 视频流, 消费者/生产者编程接口

Abstract: By adopting a data-centric information exchange pattern instead of the IP networks?? location-driven pattern, named data networking (NDN) offers better support for content distribution applications such as video streaming application. This paper proposes NDNlive,?exploiting NDN features such as naming conventions and data retrieval pattern to stream live video to multiple players. Instead of fixed-size segmentation, NDNlive chops video stream into frames which are the application data units (ADU). For the audio, video content and the media metadata, NDNlive uses different data retrieval strategies according to their data properties and different data generation patterns. NDNlive can tolerate small network problems thanks to the flexibility provided by the frame fetch pipelining strategy. It has been deployed over the world-wide NDN Testbed. The experiments show that NDNlive can provide fluent and synchronized video streaming across 11 time zones in the worldwide.

Key words: named data networking, video streaming, Consumer/Producer API