[x265] Compression gains...results update

N Vijay Anand nvijay.anand at trispacetech.com
Fri Jul 29 14:55:02 CEST 2016


Regression still on...

--bitrate xxx --psnr --ssim --me hex --input-res 1920x1080 --fps 30

psnr is Global PSNR:
ssim is SIM Mean Y:

Bitrate(Kbps) x265 Tri
psnr ssim psnr ssim
64 32.369000 0.822945 31.921000 0.810605
128 32.393000 0.824781 32.055000 0.818082
192 32.508000 0.831349 32.042000 0.819762
256 33.235000 0.846821 32.895000 0.835494
320 34.144000 0.860380 33.806000 0.849388
384 34.890000 0.872120 34.502000 0.860695
448 35.465000 0.881114 35.037000 0.869120
512 36.020000 0.890695 35.475000 0.876691
576 36.521000 0.899405 35.651000 0.879254
640 36.963000 0.906685 36.391000 0.892394
704 37.370000 0.913123 36.558000 0.895628
768 37.730000 0.918413 36.952000 0.901972
832 38.038000 0.922564 37.215000 0.906528
896 38.336000 0.926395 37.470000 0.910345
960 38.603000 0.929653 37.668000 0.913329
1024 38.832000 0.932241 37.983000 0.917706
2048 41.108000 0.953156 40.411000 0.943970
3072 42.257000 0.960902 41.669000 0.954744
4096 43.027000 0.966252 42.580000 0.961890
5120 43.562000 0.969705 43.093000 0.965873
6144 43.934000 0.971961 43.642000 0.969464
7168 44.212000 0.973557 43.901000 0.971225
8192 44.430000 0.974746 44.204000 0.973049


when the requirement is specific target bit-rate, x265 is better.
But if requirement is "generic",  you need take call on compression gains.

-- 
Principal Architect and Director,
TriSpace Technologies Pvt Ltd.,
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