i_qfactor 0.5 ip_ratio=2.00
frame I:2     Avg QP:24.26  size: 12376
frame P:126   Avg QP:27.05  size:  4419
frame B:372   Avg QP:35.24  size:   473
SSIM Mean Y:0.9756208 (16.130db)
kb/s:303.04
[MPEG4] 00:00:20.000 (20.000sec) / 765,106Bytes

i_qfactor 0.6 ip_ratio=1.67
frame I:2     Avg QP:25.13  size: 11290
frame P:126   Avg QP:27.13  size:  4414
frame B:372   Avg QP:35.33  size:   479
SSIM Mean Y:0.9755474 (16.117db)
kb/s:302.80
[MPEG4] 00:00:20.000 (20.000sec) / 764,526Bytes

i_qfactor 0.7 ip_ratio=1.43
frame I:2     Avg QP:25.72  size: 10702
frame P:126   Avg QP:27.02  size:  4420
frame B:372   Avg QP:35.35  size:   477
SSIM Mean Y:0.9755124 (16.111db)
kb/s:302.30
[MPEG4] 00:00:20.000 (20.000sec) / 763,265Bytes

i_qfactor 無指定 ip_ratio=1.40
frame I:2     Avg QP:25.82  size: 10577
frame P:126   Avg QP:27.02  size:  4425
frame B:372   Avg QP:35.32  size:   479
SSIM Mean Y:0.9754687 (16.103db)
kb/s:302.73
[MPEG4] 00:00:20.000 (20.000sec) / 764,343Bytes

i_qfactor 0.8 ip_ratio=1.25
frame I:2     Avg QP:26.30  size: 10108
frame P:126   Avg QP:27.00  size:  4429
frame B:372   Avg QP:35.43  size:   477
SSIM Mean Y:0.9754293 (16.096db)
kb/s:302.32
[MPEG4] 00:00:20.000 (20.000sec) / 763,317Bytes

i_qfactor 0.9 ip_ratio=1.11
frame I:2     Avg QP:26.82  size:  9624
frame P:126   Avg QP:26.99  size:  4433
frame B:372   Avg QP:35.34  size:   477
SSIM Mean Y:0.9753680 (16.085db)
kb/s:302.12
[MPEG4] 00:00:20.000 (20.000sec) / 762,805Bytes

i_qfactor 1.0 ip_ratio=1.00
frame I:2     Avg QP:27.27  size:  9317
frame P:126   Avg QP:26.99  size:  4432
frame B:372   Avg QP:35.16  size:   479
SSIM Mean Y:0.9753109 (16.075db)
kb/s:302.14
[MPEG4] 00:00:20.000 (20.000sec) / 762,862Bytes