A frequency-domain video transcoder for dynamic bit-rate reduction of MPEG-2 bit streams

• Published in: IEEE transactions on circuits and systems for video technology Vol. 8; no. 8; pp. 953 - 967
• Main Authors: Assuncao, P.A.A., Ghanbari, M.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.12.1998; Institute of Electrical and Electronics Engineers
• Subjects: Applied sciences; Bandwidth; Bit rate; Computational complexity; Discrete cosine transforms; Encoding; Exact sciences and technology; Frequency domain analysis; Image processing; Information, signal and communications theory; Lagrangian functions; Motion compensation; Signal processing; Streaming media; Telecommunications and information theory; Transcoding; Multimedia; Dynamic bit rate; Image processing; Data compression; Digital television; Video signal; Data storage; Transcoding; Frequency domain method; Cosine transform; Image converter; Signal processing; Motion compensation

Many of the forthcoming video services and multimedia applications are expected to use preencoded video for storage and transmission. Video transcoding is intended to provide transmission flexibility to preencoded bit streams by dynamically adjusting the bit rate of these bit streams according to ne...