Zkusil jsem nejnovější x264-r3222-b35605a.exe
Pokud jsem nenastavil nic a použil všechna vlákna (12), tak u testovaného videa bylo bitrate 4142.17 kbps
Pokud jsem nastavil jedno vlákno, tak u testovaného videa bylo bitrate 4145.94 kbps
Neznatelný rozdíl, navíc u všech vláken bylo bitrate neznatelně menší, takže tvůj problém se mi nepodařilo vyprodukovat.
Všechna vlákna:
e:\tmp>x264-r3222-b35605a.exe vstup.mkv -o vystup.mkv
lavf [info]: 1920x1080p 0:1 @ 30/1 fps (vfr)
x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
x264 [info]: profile High, level 4.0, 4:2:0, 8-bit
x264 [info]: frame I:5 Avg QP:20.54 size:154872
x264 [info]: frame P:420 Avg QP:23.44 size: 33062
x264 [info]: frame B:723 Avg QP:25.50 size: 7115
x264 [info]: consecutive B-frames: 8.6% 16.9% 15.9% 58.5%
x264 [info]: mb I I16..4: 32.6% 49.8% 17.6%
x264 [info]: mb P I16..4: 6.1% 2.6% 0.4% P16..4: 41.0% 10.9% 8.3% 0.0% 0.0% skip:30.7%
x264 [info]: mb B I16..4: 0.2% 0.1% 0.0% B16..8: 39.4% 1.9% 0.4% direct: 1.7% skip:56.2% L0:44.8% L1:50.1% BI: 5.1%
x264 [info]: 8x8 transform intra:31.0% inter:81.3%
x264 [info]: coded y,uvDC,uvAC intra: 24.6% 43.9% 4.5% inter: 11.5% 13.6% 0.1%
x264 [info]: i16 v,h,dc,p: 7% 47% 9% 37%
x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 15% 18% 42% 3% 4% 4% 5% 3% 6%
x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 22% 12% 4% 7% 7% 9% 5% 7%
x264 [info]: i8c dc,h,v,p: 50% 33% 10% 6%
x264 [info]: Weighted P-Frames: Y:4.0% UV:1.2%
x264 [info]: ref P L0: 66.2% 19.5% 10.6% 3.5% 0.1%
x264 [info]: ref B L0: 93.8% 5.3% 0.9%
x264 [info]: ref B L1: 98.1% 1.9%
x264 [info]: kb/s:4142.17
encoded 1148 frames, 77.48 fps, 4142.32 kb/sJedno vlákno:
e:\tmp>x264-r3222-b35605a.exe --threads 1 vstup.mkv -o vystup1.mkv
lavf [info]: 1920x1080p 0:1 @ 30/1 fps (vfr)
x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
x264 [info]: profile High, level 4.0, 4:2:0, 8-bit
x264 [info]: frame I:5 Avg QP:20.48 size:156228
x264 [info]: frame P:407 Avg QP:23.37 size: 33680
x264 [info]: frame B:736 Avg QP:25.50 size: 7247
x264 [info]: consecutive B-frames: 8.0% 14.3% 15.7% 62.0%
x264 [info]: mb I I16..4: 33.0% 49.3% 17.7%
x264 [info]: mb P I16..4: 6.2% 2.7% 0.4% P16..4: 40.9% 11.0% 8.4% 0.0% 0.0% skip:30.2%
x264 [info]: mb B I16..4: 0.2% 0.1% 0.0% B16..8: 39.7% 2.0% 0.4% direct: 1.8% skip:55.8% L0:44.7% L1:50.1% BI: 5.2%
x264 [info]: 8x8 transform intra:31.1% inter:81.3%
x264 [info]: coded y,uvDC,uvAC intra: 25.0% 44.2% 4.8% inter: 11.5% 13.6% 0.1%
x264 [info]: i16 v,h,dc,p: 7% 47% 9% 37%
x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 15% 18% 42% 3% 4% 4% 5% 3% 6%
x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 22% 11% 4% 7% 7% 9% 5% 7%
x264 [info]: i8c dc,h,v,p: 50% 33% 10% 6%
x264 [info]: Weighted P-Frames: Y:4.7% UV:1.2%
x264 [info]: ref P L0: 66.1% 19.4% 10.8% 3.5% 0.2%
x264 [info]: ref B L0: 94.0% 5.1% 0.9%
x264 [info]: ref B L1: 98.1% 1.9%
x264 [info]: kb/s:4145.94
encoded 1148 frames, 13.58 fps, 4146.09 kb/s