2012-12-20 13:05
我可能犯了个错误,之前码率过高的CRF--bframes为3,二次压缩改成4了,我没注意到这个变化,后来我采用4的--bframes进行CRF19压缩,发现码率竟然比二次压缩更低而且QP也要更好,不过也发现一个问题,同一个片源二次压缩的最终处理帧数为49570 frames,CRF为43030 frames,其中RF少了6000帧,不知道是不是出了什么问题,望解答
附上,CRF19和2500kbps二次压缩的日志
2500k
[Information] [2012/12/20 10:33:10] Standard error stream
-[NoImage] [mov,mp4,m4a,3gp,3g2,mj2 @ 018f99a0] max_analyze_duration 25000000 reached at 25002667
-[NoImage] avs [info]: 960x544p 136:135 @ 30000/1001 fps (cfr)
-[NoImage] x264 [info]: using SAR=136/135
-[NoImage] x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
-[NoImage] x264 [info]: profile High, level 3.1
-[NoImage]
-[NoImage] x264 [info]: frame I:203 Avg QP:19.21 size: 44403
-[NoImage] x264 [info]: frame P:12689 Avg QP:20.64 size: 18790
-[NoImage] x264 [info]: frame B:36678 Avg QP:22.36 size: 7043
-[NoImage] x264 [info]: consecutive B-frames: 0.8% 3.4% 8.3% 64.6% 22.8%
-[NoImage] x264 [info]: mb I I16..4: 11.3% 66.3% 22.5%
-[NoImage] x264 [info]: mb P I16..4: 1.5% 13.6% 2.0% P16..4: 43.4% 23.7% 11.5% 0.0% 0.0% skip: 4.3%
-[NoImage] x264 [info]: mb B I16..4: 0.3% 2.0% 0.2% B16..8: 45.3% 11.4% 2.6% direct: 5.9% skip:32.4% L0:41.5% L1:50.3% BI: 8.1%
-[NoImage] x264 [info]: 8x8 transform intra:79.1% inter:73.6%
-[NoImage] x264 [info]: coded y,uvDC,uvAC intra: 84.0% 85.3% 34.9% inter: 29.3% 36.0% 1.0%
-[NoImage] x264 [info]: i16 v,h,dc,p: 25% 7% 5% 63%
-[NoImage] x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 7% 4% 2% 11% 18% 18% 14% 14% 11%
-[NoImage] x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 4% 2% 9% 17% 18% 14% 12% 11%
-[NoImage] x264 [info]: i8c dc,h,v,p: 39% 20% 20% 21%
-[NoImage] x264 [info]: Weighted P-Frames: Y:3.4% UV:1.4%
-[NoImage] x264 [info]: ref P L0: 46.6% 13.6% 18.7% 9.0% 10.4% 1.7% 0.1%
-[NoImage] x264 [info]: ref B L0: 80.5% 12.0% 4.8% 2.8%
-[NoImage] x264 [info]: ref B L1: 94.3% 5.7%
-[NoImage] x264 [info]: kb/s:2446.30
-[NoImage] encoded 49570 frames, 24.64 fps, 2446.30 kb/s
CFR19
[Information] [2012/12/20 12:57:24] Standard error stream
-[NoImage] [mov,mp4,m4a,3gp,3g2,mj2 @ 02cd2940] max_analyze_duration 25000000 reached at 25002667
-[NoImage] avs [info]: 960x544p 136:135 @ 30000/1001 fps (cfr)
-[NoImage] resize [warning]: converting range from TV to PC
-[NoImage] x264 [info]: using SAR=136/135
-[NoImage] x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
-[NoImage] x264 [info]: profile High, level 3.1
-[NoImage]
-[NoImage] x264 [info]: frame I:147 Avg QP:18.21 size: 53554
-[NoImage] x264 [info]: frame P:10753 Avg QP:19.40 size: 20226
-[NoImage] x264 [info]: frame B:32130 Avg QP:21.15 size: 6458
-[NoImage] x264 [info]: consecutive B-frames: 0.5% 2.0% 6.4% 68.5% 22.5%
-[NoImage] x264 [info]: mb I I16..4: 10.1% 61.2% 28.6%
-[NoImage] x264 [info]: mb P I16..4: 1.8% 9.8% 2.6% P16..4: 41.7% 28.5% 13.1% 0.0% 0.0% skip: 2.5%
-[NoImage] x264 [info]: mb B I16..4: 0.2% 0.8% 0.2% B16..8: 45.4% 11.7% 2.8% direct: 5.6% skip:33.3% L0:37.5% L1:50.8% BI:11.7%
-[NoImage] x264 [info]: 8x8 transform intra:68.5% inter:70.1%
-[NoImage] x264 [info]: coded y,uvDC,uvAC intra: 79.4% 80.3% 43.9% inter: 26.1% 28.5% 1.1%
-[NoImage] x264 [info]: i16 v,h,dc,p: 18% 12% 10% 59%
-[NoImage] x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 9% 7% 6% 9% 15% 15% 14% 12% 13%
-[NoImage] x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 7% 4% 8% 16% 16% 15% 11% 13%
-[NoImage] x264 [info]: i8c dc,h,v,p: 40% 22% 20% 17%
-[NoImage] x264 [info]: Weighted P-Frames: Y:1.9% UV:0.8%
-[NoImage] x264 [info]: ref P L0: 53.0% 15.1% 16.4% 7.6% 7.3% 0.5% 0.0%
-[NoImage] x264 [info]: ref B L0: 85.4% 9.8% 2.9% 1.9%
-[NoImage] x264 [info]: ref B L1: 94.4% 5.6%
-[NoImage] x264 [info]: kb/s:2411.87
-[NoImage] encoded 43030 frames, 21.67 fps, 2411.87 kb/s