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Commit 9a470241 authored by Hui Su's avatar Hui Su
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Extra round of subpel MV search around second best full-pixel MV 

Keep track of the best and second best full pixel motion vector
candidates, and do subpel search around both of them.

Compression improvement:
lowres 0.22%   midres 0.23%   hdres 0.18%

No noticeable encoding speed changes observed on lowres test clips.

Change-Id: I5f4df2a03d1db061cfdfdba6138b27e9ea91f089
parent e7869b71
2 merge requests!6Rav1e 11 yushin 1,!3Rav1e 10 yushin
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