• paulwilkins's avatar
    Add clause to alt ref group breakout. · 607e45f4
    paulwilkins authored
    Add a clause to the breakout test for alt ref groups that
    examines the size of the accumulated second reference
    frame error compared to the cost of intra coding.
    This clause causes a reduction in the average group length for many
    clips. Alongside the change to the group length the minimum
    boost is increased.
    On balance the results are positive for psnr and psnr-hvs
    but is negative for ssim/fast ssim for the smaller image formats.
    Strong gains on some harder clips (eg ducks take off (midres) ~20%,
    husky (lowres) 6-17%. Most of the negative cases are lower motion
    clips. Subsequent patch hopefully will help with those.
    Change-Id: Ic1f5dbb9153d5089e58b1540470e799f91a65dc4
vp9_firstpass.c 127 KB