x264 core 60 r936
左 crf 24 + aq mode 2
x264 [info]: slice I:2 Avg QP:16.34 size: 1924
x264 [info]: slice P:90Avg QP:23.55 size: 2043
x264 [info]: slice B:158 Avg QP:26.64 size: 179
x264 [info]: SSIM Mean Y:0.9937899
x264 [info]: kb/s:172.8
右 crf 28 + aq mode 1
x264 [info]: slice I:1 Avg QP:19.43 size: 1563
x264 [info]: slice P:91Avg QP:24.17 size: 2024
x264 [info]: slice B:158 Avg QP:26.99 size: 170
x264 [info]: SSIM Mean Y:0.9942350
x264 [info]: kb/s:170.1
截图为编码后 用PointResize放大4x所得
不仅仅劣化 色彩也有问题
建议动画用aq=1:0.5或者关闭 真人用aq=1:1
=====================================================
由于crf相同时 加aq 造成码率增加了不少 无法做出合理评估
于是 又用同源作了如下测试
crf 26 aq 1
x264 [info]: slice I:2 Avg QP:19.35 size: 51352
x264 [info]: slice P:133 Avg QP:22.57 size: 11755
x264 [info]: slice B:116 Avg QP:26.83 size: 2723
x264 [info]: consecutive B-frames: 30.1% 31.3% 1.2% 3.2% 24.1% 7.2% 2.8% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
x264 [info]: mb I I16..4: 32.4% 49.9% 17.7%
x264 [info]: mb P I16..4: 4.8% 10.3% 1.0% P16..4: 34.2% 8.9% 5.1% 0.1% 0.0%skip:35.5%
x264 [info]: mb B I16..4: 0.1% 0.3% 0.0% B16..8: 19.1% 1.1% 1.3% direct: 2.8% skip:75.2% L0:44.5% L1:45.6% BI: 9.9%
x264 [info]: 8x8 transform intra:63.1% inter:77.1%
x264 [info]: direct mvs spatial:76.7% temporal:23.3%
x264 [info]: ref P L0 69.6% 10.1% 7.7% 2.8% 2.7% 2.3% 2.3% 1.2% 1.4%
x264 [info]: ref B L0 74.1% 8.1% 6.3% 2.7% 2.6% 2.4% 2.3% 1.4%
x264 [info]: ref B L1 95.7% 4.3%
x264 [info]: SSIM Mean Y:0.9819884
x264 [info]: kb/s:1579.2
crf 24
x264 [info]: slice I:2 Avg QP:21.00 size: 52455
x264 [info]: slice P:133 Avg QP:23.38 size: 11105
x264 [info]: slice B:116 Avg QP:26.74 size: 2787
x264 [info]: consecutive B-frames: 30.1% 31.3% 1.2% 3.2% 24.1% 7.2% 2.8% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
x264 [info]: mb I I16..4: 38.9% 43.8% 17.3%
x264 [info]: mb P I16..4: 6.9% 8.3% 0.9% P16..4: 31.6% 8.6% 4.7% 0.1% 0.1%skip:38.8%
x264 [info]: mb B I16..4: 0.1% 0.3% 0.0% B16..8: 18.1% 1.2% 1.4% direct: 3.2% skip:75.7% L0:44.1% L1:45.4% BI:10.4%
x264 [info]: 8x8 transform intra:51.4% inter:78.1%
x264 [info]: direct mvs spatial:83.6% temporal:16.4%
x264 [info]: ref P L0 68.2% 10.2% 8.1% 2.9% 2.9% 2.5% 2.5% 1.2% 1.4%
x264 [info]: ref B L0 74.3% 8.0% 6.1% 2.9% 2.6% 2.4% 2.2% 1.3%
x264 [info]: ref B L1 96.3% 3.7%
x264 [info]: SSIM Mean Y:0.9809657
x264 [info]: kb/s:1518.1
crf 24 在光线 光晕 以及 彩虹 以及其他细节部分码率分配仍然不如前者
不过crf 24在整体上的码率分配有应该是优于前者的（猜测）
如何取舍 是个问题
还有aq mode 也是问题
===========================================================
上 raw
下 无aq 压制后
注意看光线 光晕 以及 彩虹 部分
上aq=1:1.00
下aq=2:1.00
