Patent ID: 6871006

Claim:
A method of processing original-quality MPEG coded video to produce reduced-quality MPEG coded video for trick mode operation the MPEG coded video including a set of non-zero AC discrete cosine transform (DCT) coefficients for 8×8 blocks in I-frames of the MPEG coded video, said method including the steps of removing non-zero AC DCT coefficients from the 8×8 blocks of I-frames of the MPEG coded video to produce I-frames of reduced-quality MPEG coded video, and inserting freeze frames in the reduced-quality MPEG coded video, which further includes ingesting the original-quality MPEG coded video into a file server and storing the original-quality MPEG coded video in a main file, producing the I-frames of reduced-quality MPEG coded video from the original-quality MPEG coded video ingested into the file server, and storing the I-frames of reduced-quality MPEG video in at least one trick mode file in the file server, wherein the trick mode file shares a volume with the main file, and the volume includes an index linking the I frames of reduced-quality MPEG coded video to corresponding I frames in the original-quality MPEG coded video.