Replay boundary detection in MPEG compressed video

With the large amounts of digital sports video increasing day-by-day, effectively analyzing sports video content has become more and more important. In sports video, replay scene often represents the highlight or interesting event of the video. The detection of replay boundary in the sports video is an important step in analyzing sports video content. In this paper, we present a model of replay boundary detection, and we address a new technique of identifying the replay boundary directly from MPEG compressed domain. It uses MPEG feature including macroblock and motion vector that is easy extract from MPEG video, then applies the rule of macroblock and motion vector to the detection of replay boundary. For working on features directly from the MPEG compressed domain, it performs faster than real time decoding. The experiment results show our model-free method is effective and low complex.