When using '--b-adapt 0' I get:
Code:
x264 [info]: using SAR=1/1
x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
x264 [info]: profile Main, level 4.1
x264 [info]: frame I:185 Avg QP:38.37 size: 15069
x264 [info]: frame P:1551 Avg QP:39.58 size: 4848
x264 [info]: frame B:5553 Avg QP:42.11 size: 1522
x264 [info]: consecutive B-frames: 7.8% 1.0% 1.1% 0.8% 3.1% 86.3%
x264 [info]: mb I I16..4: 93.9% 0.0% 6.1%
x264 [info]: mb P I16..4: 18.7% 0.0% 0.0% P16..4: 8.4% 0.0% 0.0% 0.0% 0.0% skip:72.9%
x264 [info]: mb B I16..4: 2.3% 0.0% 0.0% B16..8: 4.8% 0.0% 0.0% direct: 1.5% skip:91.5% L0:49.4% L1:49.0% BI: 1.6%
x264 [info]: final ratefactor: 39.88
x264 [info]: direct mvs spatial:85.9% temporal:14.1%
x264 [info]: coded y,uvDC,uvAC intra: 6.0% 26.7% 4.5% inter: 0.4% 2.3% 0.0%
x264 [info]: i16 v,h,dc,p: 59% 25% 11% 5%
x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 17% 30% 9% 5% 5% 5% 5% 4%
x264 [info]: i8c dc,h,v,p: 81% 10% 8% 1%
x264 [info]: Weighted P-Frames: Y:4.8% UV:2.3%
x264 [info]: kb/s:493.58
encoded 7289 frames, 96.66 fps, 493.58 kb/s
When the default '--b-adapt 1' I get:
Code:
x264 [info]: using SAR=1/1
x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
x264 [info]: profile Main, level 4.1
x264 [info]: frame I:184 Avg QP:36.78 size: 16908
x264 [info]: frame P:3267 Avg QP:39.03 size: 4204
x264 [info]: frame B:3838 Avg QP:40.08 size: 739
x264 [info]: consecutive B-frames: 17.3% 31.7% 27.5% 11.1% 5.6% 6.7%
x264 [info]: mb I I16..4: 92.7% 0.0% 7.3%
x264 [info]: mb P I16..4: 15.5% 0.0% 0.0% P16..4: 8.8% 0.0% 0.0% 0.0% 0.0% skip:75.7%
x264 [info]: mb B I16..4: 0.6% 0.0% 0.0% B16..8: 3.6% 0.0% 0.0% direct: 0.8% skip:95.0% L0:43.0% L1:55.6% BI: 1.4%
x264 [info]: final ratefactor: 38.30
x264 [info]: direct mvs spatial:86.9% temporal:13.1%
x264 [info]: coded y,uvDC,uvAC intra: 5.5% 27.3% 4.4% inter: 0.5% 1.9% 0.0%
x264 [info]: i16 v,h,dc,p: 58% 25% 12% 5%
x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 17% 29% 9% 5% 5% 5% 5% 5%
x264 [info]: i8c dc,h,v,p: 81% 10% 8% 1%
x264 [info]: Weighted P-Frames: Y:2.1% UV:1.1%
x264 [info]: kb/s:517.92
encoded 7289 frames, 95.05 fps, 517.92 kb/s
so using '--b-adapt 2' is the main culprit.
