• Jingning Han's avatar
    Disable compound mode in sub8x8 coding blocks · c41a549a
    Jingning Han authored
    Disable the support of compound prediction modes for sub8x8 codking
    blocks. Make the rate-distortion optimizations process account for
    such constraints.
    With the use 2x2 chroma prediction block, this makes the wrost case
    number of inter predictors same as vp9. It affects the coding
    gains by 0.35% for lowres, 0.17% for midres, and 0.08% for hdres.
    The encoding speed is up by 10%.
    Change-Id: Ieb2a83030676911baa403e586f1f800cbf485d81