[x265] Motion.cpp PATCH Analysis summary
N Vijay Anand
nvijay.anand at trispacetech.com
Thu Aug 4 00:06:43 CEST 2016
1. Use of 4 best motion vectors helps in improving
final bmv about 25% times in simulation.
i.e 25% times there is a lesser bcost, bmv found
than with 1 best motion vector.
This provides better coding efficiency, and for
100 frames HD seq. (jogging_girl) statistics
changes from 1-I frame, 46 - Pframe, 53-BFrame
to 1 I-frame, 45-Pframe, 54 -B frame.
2. 4 is ideal, as more is compute expensive.
This is number can be hardcoded as a const.
3. BD-PSNR BD-SSIM is same/slightly better with this
improvements. But no degradation.
--
Principal Architect and Director,
TriSpace Technologies Pvt Ltd.,
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