[x265] Can x265 suppourt setting tu size in cmd line for dealing with ring effect?

[idxa at sina.com]

Hi,
 
It is to be found that x265 make more ring effect with default options especially in low bitrate.
Perhaps it is caused by TU size.

I have done some tests with the following options,
x265.exe --input chineseIdol_832x464_25.yuv --recon Ido_832x464_6411.yuv -o Ido_832x464.hevc --input-res 832x464 --fps 25 --crf 31 --frame-skip 300  --frames 100 --tu-intra-depth 1 --tu-inter-depth 1 --ctu 64 
 
Here ctu size is changed from 64 to 16, combined with --tu-intra-depth,--tu-inter-depth (1,1) and (3,3)
 
The result shows "ctu==64, tu-intra-depth=1, tu-inter-depth=1" has much more ring than "ctu==16, tu-intra-depth=3, tu-inter-depth=3".
 


Please see the graph,left is "ctu==64, tu-intra-depth=1, tu-inter-depth=1" and right is "ctu==16, tu-intra-depth=3, tu-inter-depth=3".
 
Can x265 suppourt setting tu size in cmd line like HM of QuadtreeTULog2MaxSize and QuadtreeTULog2MinSize?
thank,
idxa
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