[请教]为何--pbratio 参数不起作用

因最近压了一部片片在特定场景可观察到明显的p/b幀的画质差异，想减小--pbratio 参数，结果没有任何变化，是bug，还是mbtree的作用？？请高人指教。。



--pbratio 默认（1.3）

--[NoImage] Job commandline: "D:\Program Files\megui\tools\x264\vfw4x264.exe" --tune film --pass 2 --bitrate 800 --stats "D:\音乐\VIDEO_TS\VTS_16_3.stats" --keyint 240 --min-keyint 4 --b-adapt 2 --qcomp 0.7 --cqmfile "D:\Program Files\megui\custom_matrices\soulhunter_v2.cfg" --direct auto --subme 9 --partitions all --psnr --ssim --fullrange on --sar 1:1 --output "D:\音乐\VIDEO_TS\VTS_16_3.mp4" "D:\音乐\VIDEO_TS\VTS_16_1.avs"
--[Information] [2010/3/29 20:57:03] Encoding started
--[NoImage] Standard output stream:
--[NoImage] Standard error stream
---[NoImage] yuv [info]: 720x400p 1:1 @ 24000/1001 fps (cfr)
---[NoImage] x264 [info]: using SAR=1/1
---[NoImage] x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
---[NoImage] x264 [info]: profile High, level 3.0
---[NoImage]
---[NoImage] x264 [info]: frame I:75Avg QP:22.91 size: 28023 PSNR Mean Y:43.54 U:48.77 V:47.96 Avg:44.61 Global:43.62
---[NoImage] x264 [info]: frame P:2272 Avg QP:26.59 size: 6958 PSNR Mean Y:46.71 U:50.60 V:50.20 Avg:46.71 Global:41.66
---[NoImage] x264 [info]: frame B:4904 Avg QP:29.24 size: 2521 PSNR Mean Y:39.85 U:46.54 V:45.92 Avg:41.08 Global:40.32
---[NoImage] x264 [info]: consecutive B-frames: 5.7% 6.0% 10.4% 77.9%
---[NoImage] x264 [info]: mb I I16..4: 11.0% 75.6% 13.4%
---[NoImage] x264 [info]: mb P I16..4: 3.3% 9.3% 1.4% P16..4: 46.8% 12.1% 2.7% 0.1% 0.1%skip:24.3%
---[NoImage] x264 [info]: mb B I16..4: 0.4% 1.6% 0.3% B16..8: 36.5% 1.6% 2.0% direct: 2.3% skip:55.3% L0:39.3% L1:49.7% BI:10.9%
---[NoImage] x264 [info]: 8x8 transform intra:68.9% inter:76.4%
---[NoImage] x264 [info]: direct mvs spatial:87.6% temporal:12.4%
---[NoImage] x264 [info]: coded y,uvDC,uvAC intra: 66.2% 66.6% 31.0% inter: 15.3% 12.5% 0.9%
---[NoImage] x264 [info]: i16 v,h,dc,p: 51% 18% 8% 23%
---[NoImage] x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 8% 7% 10% 15% 14% 14% 11% 12%
---[NoImage] x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 11% 8% 7% 9% 16% 13% 14% 10% 12%
---[NoImage] x264 [info]: Weighted P-Frames: Y:7.3%
---[NoImage] x264 [info]: ref P L0: 59.4% 17.5% 16.0% 6.3% 0.8%
---[NoImage] x264 [info]: ref B L0: 89.5% 8.2% 2.3%
---[NoImage] x264 [info]: ref B L1: 95.6% 4.4%
---[NoImage] x264 [info]: SSIM Mean Y:0.9688989
---[NoImage] x264 [info]: PSNR Mean Y:42.035 U:47.837 V:47.283 Avg:42.877 Global:40.721 kb/s:800.77
---[NoImage] encoded 7251 frames, 7.18 fps, 800.79 kb/s
--[Information] Final statistics
---[NoImage] Video Bitrate Desired: 800 kbit/s
---[NoImage] Video Bitrate Obtained (approximate): 803 kbit/s


--pbratio =1.2

--[NoImage] Job commandline: "D:\Program Files\megui\tools\x264\vfw4x264.exe" --tune film --pass 2 --bitrate 800 --stats "D:\音乐\VIDEO_TS\VTS_16_1.stats" --keyint 240 --min-keyint 4 --b-adapt 2 --pbratio 1.2 --qcomp 0.7 --cqmfile "D:\Program Files\megui\custom_matrices\soulhunter_v2.cfg" --direct auto --subme 9 --partitions all --psnr --ssim --fullrange on --sar 1:1 --output "D:\音乐\VIDEO_TS\VTS_16_1.mp4" "D:\音乐\VIDEO_TS\VTS_16_1.avs"
--[Information] [2010/3/29 19:32:49] Encoding started
--[NoImage] Standard output stream:
--[NoImage] Standard error stream
---[NoImage] yuv [info]: 720x400p 1:1 @ 24000/1001 fps (cfr)
---[NoImage] x264 [info]: using SAR=1/1
---[NoImage] x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
---[NoImage] x264 [info]: profile High, level 3.0
---[NoImage]
---[NoImage] x264 [info]: frame I:75Avg QP:22.91 size: 28023 PSNR Mean Y:43.54 U:48.77 V:47.96 Avg:44.61 Global:43.62
---[NoImage] x264 [info]: frame P:2272 Avg QP:26.59 size: 6958 PSNR Mean Y:46.71 U:50.60 V:50.20 Avg:46.71 Global:41.66
---[NoImage] x264 [info]: frame B:4904 Avg QP:29.24 size: 2521 PSNR Mean Y:39.85 U:46.54 V:45.92 Avg:41.08 Global:40.32
---[NoImage] x264 [info]: consecutive B-frames: 5.7% 6.0% 10.4% 77.9%
---[NoImage] x264 [info]: mb I I16..4: 11.0% 75.6% 13.4%
---[NoImage] x264 [info]: mb P I16..4: 3.3% 9.3% 1.4% P16..4: 46.8% 12.1% 2.7% 0.1% 0.1%skip:24.3%
---[NoImage] x264 [info]: mb B I16..4: 0.4% 1.6% 0.3% B16..8: 36.5% 1.6% 2.0% direct: 2.3% skip:55.3% L0:39.3% L1:49.7% BI:10.9%
---[NoImage] x264 [info]: 8x8 transform intra:68.9% inter:76.4%
---[NoImage] x264 [info]: direct mvs spatial:87.6% temporal:12.4%
---[NoImage] x264 [info]: coded y,uvDC,uvAC intra: 66.2% 66.6% 31.0% inter: 15.3% 12.5% 0.9%
---[NoImage] x264 [info]: i16 v,h,dc,p: 51% 18% 8% 23%
---[NoImage] x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 8% 7% 10% 15% 14% 14% 11% 12%
---[NoImage] x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 11% 8% 7% 9% 16% 13% 14% 10% 12%
---[NoImage] x264 [info]: Weighted P-Frames: Y:7.3%
---[NoImage] x264 [info]: ref P L0: 59.4% 17.5% 16.0% 6.3% 0.8%
---[NoImage] x264 [info]: ref B L0: 89.5% 8.2% 2.3%
---[NoImage] x264 [info]: ref B L1: 95.6% 4.4%
---[NoImage] x264 [info]: SSIM Mean Y:0.9688989
---[NoImage] x264 [info]: PSNR Mean Y:42.035 U:47.837 V:47.283 Avg:42.877 Global:40.721 kb/s:800.77
---[NoImage] encoded 7251 frames, 5.48 fps, 800.79 kb/ss



--pbratio =1.1


--[NoImage] Job commandline: "D:\Program Files\megui\tools\x264\vfw4x264.exe" --tune film --pass 2 --bitrate 800 --stats "D:\音乐\VIDEO_TS\VTS_16_3.stats" --keyint 240 --min-keyint 4 --b-adapt 2 --pbratio 1.1 --qcomp 0.7 --cqmfile "D:\Program Files\megui\custom_matrices\soulhunter_v2.cfg" --direct auto --subme 9 --partitions all --psnr --ssim --fullrange on --sar 1:1 --output "D:\音乐\VIDEO_TS\VTS_16_3.mp4" "D:\音乐\VIDEO_TS\VTS_16_1.avs"
--[Information] [2010/3/29 20:34:02] Encoding started
--[NoImage] Standard output stream:
--[NoImage] Standard error stream
---[NoImage] yuv [info]: 720x400p 1:1 @ 24000/1001 fps (cfr)
---[NoImage] x264 [info]: using SAR=1/1
---[NoImage] x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
---[NoImage] x264 [info]: profile High, level 3.0
---[NoImage]
---[NoImage] x264 [info]: frame I:75Avg QP:22.91 size: 28023 PSNR Mean Y:43.54 U:48.77 V:47.96 Avg:44.61 Global:43.62
---[NoImage] x264 [info]: frame P:2272 Avg QP:26.59 size: 6958 PSNR Mean Y:46.71 U:50.60 V:50.20 Avg:46.71 Global:41.66
---[NoImage] x264 [info]: frame B:4904 Avg QP:29.24 size: 2521 PSNR Mean Y:39.85 U:46.54 V:45.92 Avg:41.08 Global:40.32
---[NoImage] x264 [info]: consecutive B-frames: 5.7% 6.0% 10.4% 77.9%
---[NoImage] x264 [info]: mb I I16..4: 11.0% 75.6% 13.4%
---[NoImage] x264 [info]: mb P I16..4: 3.3% 9.3% 1.4% P16..4: 46.8% 12.1% 2.7% 0.1% 0.1%skip:24.3%
---[NoImage] x264 [info]: mb B I16..4: 0.4% 1.6% 0.3% B16..8: 36.5% 1.6% 2.0% direct: 2.3% skip:55.3% L0:39.3% L1:49.7% BI:10.9%
---[NoImage] x264 [info]: 8x8 transform intra:68.9% inter:76.4%
---[NoImage] x264 [info]: direct mvs spatial:87.6% temporal:12.4%
---[NoImage] x264 [info]: coded y,uvDC,uvAC intra: 66.2% 66.6% 31.0% inter: 15.3% 12.5% 0.9%
---[NoImage] x264 [info]: i16 v,h,dc,p: 51% 18% 8% 23%
---[NoImage] x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 8% 7% 10% 15% 14% 14% 11% 12%
---[NoImage] x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 11% 8% 7% 9% 16% 13% 14% 10% 12%
---[NoImage] x264 [info]: Weighted P-Frames: Y:7.3%
---[NoImage] x264 [info]: ref P L0: 59.4% 17.5% 16.0% 6.3% 0.8%
---[NoImage] x264 [info]: ref B L0: 89.5% 8.2% 2.3%
---[NoImage] x264 [info]: ref B L1: 95.6% 4.4%
---[NoImage] x264 [info]: SSIM Mean Y:0.9688989
---[NoImage] x264 [info]: PSNR Mean Y:42.035 U:47.837 V:47.283 Avg:42.877 Global:40.721 kb/s:800.77
---[NoImage] encoded 7251 frames, 9.28 fps, 800.79 kb/s

是和mbtree有关系

均为two pass 方便观看只贴2 pass，其余参数与上面的相同。。。


关闭mbtree pbratio=1.3

--[NoImage] Job commandline: "D:\Program Files\megui\tools\x264\vfw4x264.exe" --tune film --pass 2 --bitrate 800 --stats "D:\音乐\VIDEO_TS\VTS_16_3.stats" --keyint 240 --min-keyint 4 --b-adapt 2 --qcomp 0.7 --no-mbtree --cqmfile "D:\Program Files\megui\custom_matrices\soulhunter_v2.cfg" --direct auto --subme 9 --partitions all --psnr --ssim --fullrange on --sar 1:1 --output "D:\音乐\VIDEO_TS\VTS_16_3.mp4" "D:\音乐\VIDEO_TS\VTS_16_1.avs"
--[Information] [2010/3/29 22:45:09] Encoding started
--[NoImage] Standard output stream:
--[NoImage] Standard error stream
---[NoImage] yuv [info]: 720x400p 1:1 @ 24000/1001 fps (cfr)
---[NoImage] x264 [info]: using SAR=1/1
---[NoImage] x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
---[NoImage] x264 [info]: profile High, level 3.0
---[NoImage]
---[NoImage] x264 [info]: frame I:76Avg QP:22.61 size: 27511 PSNR Mean Y:43.48 U:48.80 V:47.90 Avg:44.54 Global:43.28
---[NoImage] x264 [info]: frame P:2283 Avg QP:24.76 size: 7015 PSNR Mean Y:46.92 U:50.61 V:50.09 Avg:46.62 Global:41.30
---[NoImage] x264 [info]: frame B:4892 Avg QP:28.45 size: 2476 PSNR Mean Y:39.69 U:46.36 V:45.70 Avg:40.91 Global:39.86
---[NoImage] x264 [info]: consecutive B-frames: 6.2% 5.5% 10.0% 78.4%
---[NoImage] x264 [info]: mb I I16..4: 9.7% 77.3% 13.0%
---[NoImage] x264 [info]: mb P I16..4: 3.0% 9.8% 1.4% P16..4: 49.0% 12.1% 2.3% 0.1% 0.1%skip:22.3%
---[NoImage] x264 [info]: mb B I16..4: 0.4% 1.5% 0.3% B16..8: 35.9% 1.5% 2.1% direct: 2.4% skip:55.9% L0:38.9% L1:50.2% BI:10.9%
---[NoImage] x264 [info]: 8x8 transform intra:70.6% inter:76.3%
---[NoImage] x264 [info]: direct mvs spatial:87.7% temporal:12.3%
---[NoImage] x264 [info]: coded y,uvDC,uvAC intra: 68.7% 66.9% 31.9% inter: 15.8% 12.9% 0.8%
---[NoImage] x264 [info]: i16 v,h,dc,p: 55% 17% 8% 20%
---[NoImage] x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 8% 7% 10% 14% 14% 14% 11% 12%
---[NoImage] x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 11% 8% 7% 9% 16% 13% 14% 10% 12%
---[NoImage] x264 [info]: Weighted P-Frames: Y:12.5%
---[NoImage] x264 [info]: ref P L0: 58.1% 18.2% 16.2% 6.5% 1.1%
---[NoImage] x264 [info]: ref B L0: 88.7% 8.8% 2.5%
---[NoImage] x264 [info]: ref B L1: 95.2% 4.8%
---[NoImage] x264 [info]: SSIM Mean Y:0.9671495
---[NoImage] x264 [info]: PSNR Mean Y:42.003 U:47.727 V:47.105 Avg:42.749 Global:40.294 kb/s:799.33
---[NoImage] encoded 7251 frames, 6.65 fps, 799.35 kb/s
--[Information] Final statistics
---[NoImage] Video Bitrate Desired: 800 kbit/s
---[NoImage] Video Bitrate Obtained (approximate): 801 kbit/s

关闭mbtree pbratio=1.1

--[NoImage] Job commandline: "D:\Program Files\megui\tools\x264\vfw4x264.exe" --tune film --pass 2 --bitrate 800 --stats "D:\音乐\VIDEO_TS\VTS_16_3.stats" --keyint 240 --min-keyint 4 --b-adapt 2 --pbratio 1.1 --qcomp 0.7 --no-mbtree --cqmfile "D:\Program Files\megui\custom_matrices\soulhunter_v2.cfg" --direct auto --subme 9 --partitions all --psnr --ssim --fullrange on --sar 1:1 --output "D:\音乐\VIDEO_TS\VTS_16_3.mp4" "D:\音乐\VIDEO_TS\VTS_16_1.avs"
--[Information] [2010/3/29 22:16:15] Encoding started
--[NoImage] Standard output stream:
--[NoImage] Standard error stream
---[NoImage] yuv [info]: 720x400p 1:1 @ 24000/1001 fps (cfr)
---[NoImage] x264 [info]: using SAR=1/1
---[NoImage] x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
---[NoImage] x264 [info]: profile High, level 3.0
---[NoImage]
---[NoImage] x264 [info]: frame I:76Avg QP:23.16 size: 25931 PSNR Mean Y:43.13 U:48.59 V:47.67 Avg:44.21 Global:42.93
---[NoImage] x264 [info]: frame P:2283 Avg QP:25.39 size: 6455 PSNR Mean Y:46.63 U:50.46 V:49.96 Avg:46.46 Global:40.99
---[NoImage] x264 [info]: frame B:4892 Avg QP:27.75 size: 2772 PSNR Mean Y:39.71 U:46.30 V:45.65 Avg:40.93 Global:39.90
---[NoImage] x264 [info]: consecutive B-frames: 6.2% 5.5% 10.0% 78.4%
---[NoImage] x264 [info]: mb I I16..4: 10.4% 76.5% 13.0%
---[NoImage] x264 [info]: mb P I16..4: 3.1% 9.5% 1.4% P16..4: 49.4% 11.2% 2.3% 0.1% 0.0%skip:23.0%
---[NoImage] x264 [info]: mb B I16..4: 0.4% 1.6% 0.3% B16..8: 34.4% 1.6% 2.3% direct: 2.7% skip:56.7% L0:38.8% L1:49.8% BI:11.5%
---[NoImage] x264 [info]: 8x8 transform intra:70.0% inter:75.6%
---[NoImage] x264 [info]: direct mvs spatial:87.2% temporal:12.8%
---[NoImage] x264 [info]: coded y,uvDC,uvAC intra: 67.6% 66.0% 30.3% inter: 16.3% 13.5% 0.8%
---[NoImage] x264 [info]: i16 v,h,dc,p: 55% 17% 8% 21%
---[NoImage] x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 8% 7% 10% 15% 14% 14% 11% 12%
---[NoImage] x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 11% 8% 7% 9% 16% 13% 14% 10% 12%
---[NoImage] x264 [info]: Weighted P-Frames: Y:12.5%
---[NoImage] x264 [info]: ref P L0: 58.4% 17.9% 16.2% 6.4% 1.1%
---[NoImage] x264 [info]: ref B L0: 88.0% 9.3% 2.6%
---[NoImage] x264 [info]: ref B L1: 94.9% 5.1%
---[NoImage] x264 [info]: SSIM Mean Y:0.9667225
---[NoImage] x264 [info]: PSNR Mean Y:41.922 U:47.635 V:47.025 Avg:42.702 Global:40.240 kb/s:800.66
---[NoImage] encoded 7251 frames, 6.68 fps, 800.68 kb/s

pbratio效果好像没有以前的明显了