(57) ABSTRACT A video encoding system encodes video streams for multiple bit rate video
streaming using an approach that permits the encoded bit rate to vary Subject to a peak bit …

4,142,071 A 2f1979 Croisier et al. 4,216,354 A 8, 1980 Esteban et al. 4,464,783 A 8, 1984
Beraud et al. 5,243,420 A 9, 1993 Hibi 5,381,143 A 1/1995 Shimoyoshi et al. 5,416,521 A …

(57) ABSTRACT A video encoding system encodes video streams for multiple bit rate video
streaming using an approach that permits the encoded resolution to vary based, at least in …

(57) ABSTRACT A video encoder uses previously calculated motion informa tion for inter
frame coding to achieve faster computation speed for video compression. In a multi bit rate …

Techniques and tools for encoding enhancement layer video with quantization that varies
spatially and/or between color channels are presented, along with corresponding decoding …

This invention provides an adaptive transcoder that modi? es a data stream for transmission
over variable bandwidth networks and to devices having varying processing capa bilities in …

US8422546B2 - Adaptive video encoding using a perceptual model - Google Patents
US8422546B2 - Adaptive video encoding using a perceptual model - Google Patents Adaptive …

Set QP for macroblock such of at least one of the plural blocks being Zero. For example,
identifying the threshold quantization step size comprises identifying n top AC coefficients in …

720 the current Smooth region. An encoder determines a differen tial quantization interval
for a sequence, the interval compris ing an interval number. The interval constrains the …

Quality settings established by an encoder are adjusted based on information associated
with regions of interest (“ROIs). For example, quantization step sizes can be reduced (to …