SYSTEM AND METHOD FOR CREATING TRICK PLAY VIDEO STREAMS FROM COMPRESSED NORMAL PLAY VIDEO BITSTREAM

摘要

PROBLEM TO BE SOLVED: To provide a system for generating trick play video streams, such as fast forward and fast reverse video streams, from an MPEG compressed normal play bitstream.

SOLUTION: The system receives a compressed normal play bitstream and filters the bitstream by extracting and saving only portions of the bitstream. The system preferably extracts I-frames and sequence headers, including all weighting matrixes, from the MPEG bitstream and stores the information in a new file. The system then assembles or collates the filtered data in a proper order to generate a single assembled bitstream. The system also ensures that the weighting matrixes properly correspond to the respective I-frames.

COPYRIGHT: (C)2012,JPO&INPIT