同一个100秒的小片段，其它参数相同，
crf20 码率7.2M
bp
s，19码率7.9Mbps，18码率12.8Mbps
crf 20
[libx264 @ 0x2c8dc40] frame I:11 Avg QP:17.50 size:172482
[libx264 @ 0x2c8dc40] frame P:438 Avg QP:20.10 size: 53492
[libx264 @ 0x2c8dc40] frame B:1940 Avg QP:21.56 size: 33219
[libx264 @ 0x2c8dc40] consecutive B-frames: 0.5% 0.3% 9.4% 1.8% 4.4% 77.1% 4.7% 0.3% 1.5%
[libx264 @ 0x2c8dc40] kb/s:7201.65
crf 19
[libx264 @ 0x2d0bd20] frame I:11 Avg QP:16.85 size:200657
[libx264 @ 0x2d0bd20] frame P:403 Avg QP:19.35 size: 60772
[libx264 @ 0x2d0bd20] frame B:1975 Avg QP:20.54 size: 36412
[libx264 @ 0x2d0bd20] consecutive B-frames: 0.5% 0.3% 0.6% 0.2% 2.3% 93.4% 2.3% 0.3% 0.0%
[libx264 @ 0x2d0bd20] kb/s:7910.71
crf 18
[libx264 @ 0x2f91c40] frame I:11 Avg QP:15.58 size:211422
[libx264 @ 0x2f91c40] frame P:438 Avg QP:18.07 size: 86507
[libx264 @ 0x2f91c40] frame B:1940 Avg QP:19.30 size: 61618
[libx264 @ 0x2f91c40] consecutive B-frames: 0.5% 0.3% 9.4% 1.8% 4.4% 77.1% 4.7% 0.3% 1.5%
[libx264 @ 0x2f91c40] kb/s:12815.57

18好厉害

最近都压26的路过。。