• Jingning Han's avatar
    Separate rate-distortion modeling for DC and AC coefficients · 7c45dc98
    Jingning Han authored
    This is the first step to rework the rate-distortion modeling used
    in rtc coding mode. The overall goal is to make the modeling
    customized for the statistics encountered in the rtc coding.
    
    This commit makes encoder to perform rate-distortion modeling for
    DC and AC coefficients separately. No speed changes observed.
    The coding performance for pedestrian_area_1080p is largely
    improved:
    
    speed -5, from 79558 b/f, 37.871 dB -> 79598 b/f, 38.600 dB
    speed -6, from 79515 b/f, 37.822 dB -> 79544 b/f, 38.130 dB
    
    Overall performance for rtc set at speed -6 is improved by 0.67%.
    
    Change-Id: I9153444567e5f75ccdcaac043c2365992c005c0c
    7c45dc98
vp9_pickmode.c 18.4 KB