Statistical multiplexed video encoding using pre-encoding a prio

Details Statistical multiplexed video encoding using pre-encoding a prio Statistical multiplexed video encoding using pre-encoding a prio

1999-12-07

2000-07-25

Le, Vu

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

348385, 348387, 370538, H04N 712

Patent

active

060944579

ABSTRACT:
A statistical multiplexing apparatus and method for generating and combining a plurality of encoded video bit streams. A storage device contains pre-stored a priori statistics indicative of the encoding complexity of the video signals from which the encoded video bit streams will be generated. The pre-stored a priori statistics may include inter-pixel differences in the same picture or between multiple pictures or pre-encoding a priori statistics generated during a preliminary encoding of the video signals. Examples of pre-encoding a priori statistics include the number of bits per picture at a given quantization level, an average quantization level, picture types, scene change locations and repeat field for one or more of the video bit streams. The video signals are applied to encoders which compress the signals in accordance with bit allocation decisions generated by a statistics computer. The statistics computer uses only pre-encoding a priori statistics from the storage device to generate bit allocation decisions. Alternatively, the statistics computer may use any type of a priori statistics in conjunction with a posteriori statistics received from the encoders in allocating bits. The resulting compressed video bit streams are applied to a multiplexer and combined into a single multiplexed bit stream for transmission on a single channel. The statistics computer thus has access to additional information regarding the encoding complexity of the video bit streams to be encoded and combined, and can therefore generate more accurate bit allocations and better maintain consistent video quality across multiple encoded bit streams.

REFERENCES:
patent: 4394774 (1983-07-01), Widergren et al.
patent: 5115309 (1992-05-01), Hang
patent: 5121383 (1992-06-01), Golestani
patent: 5216503 (1993-06-01), Paik et al.
patent: 5289462 (1994-02-01), Ahmadi et al.
patent: 5534926 (1996-07-01), Ohki et al.
patent: 5537440 (1996-07-01), Eyuboglu et al.
patent: 5541852 (1996-07-01), Eyuboglu et al.
patent: 5543842 (1996-08-01), Xu et al.
patent: 5550589 (1996-08-01), Shiojiri et al.
patent: 5550590 (1996-08-01), Sakazawa et al.
patent: 5606369 (1997-02-01), Keesman et al.
patent: 5617142 (1997-04-01), Hamilton
patent: 5708664 (1998-01-01), Budge et al.
patent: 5717464 (1998-02-01), Perkins et al.
patent: 5754700 (1998-05-01), Kuzma
patent: 5805220 (1998-09-01), Keesman et al.
patent: 5815502 (1998-09-01), Saito et al.
patent: 5861919 (1999-01-01), Perkins et al.
patent: 5910942 (1999-06-01), Grenot et al.
patent: 5926205 (1999-07-01), Krause et al.
patent: 6038256 (2000-03-01), Linzer et al.
M. Perkins & D. Arnstein, Statistical Multiplexing of Multiple MPEG-2 Video Programs in a Single Channel, SMPTE J., vol. 104, No. 9, pp. 596-599, Sep., 1995.
L. Wang & A. Vincent, Joint Rate Control for Multi-Program Video Coding, IEEE Trans. on. Cons. Elecs., vol. 42, No. 3, Aug., 1996.
Jabbari et al., "Statistical Characterization and Block-Based Modeling of Motion-Adaptive Coded Video," IEEE Trans. on Cir. And Syst. for Video Technology, vol. 3, No. 3, pp. 199-207, Jun., 1993.
Reininger et al., "Statistical Multiplexing of the VBR MPEG Compressed Video on ATM Networks," IEEE, pp. 919-926, 1993.

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