Characteristics extraction from MPEG-compressed bitstream and its application: an intelligent transcoder

In this paper, we present a frame-based characteristics extraction tool, which can retrieve meaningful information from MPEG-compressed bitstreams. Taking advantage of the extracted information for content analyses, such as scene change detection and bitrate allocation, we implemented a practical and useful application: an intelligent video transcoder. This representative application demonstrates the potential usage of such frame-based characteristics, and it is believed that these characteristics can also benefit MPEG-7 related applications.