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Old 2nd September 2010, 22:37   #1  |  Link
jpsdr
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Strange values on log files.

Encoding parameters :
Code:
REM Set of max bitrate (ici le bitrate max)
set MAX_BR=40000

REM Set of Buffer (ici le buffer)
set BUF_BR=30000

REM 1ère passe
x264_x64.exe --profile "high" --preset "placebo" --tune %TUNING% --pass 1 --bitrate %2 --stats %STAT_FILE% --level "4.1" --qpmin 0 --vbv-maxrate %MAX_BR% --vbv-bufsize %BUF_BR% --keyint 24 --min-keyint 2 --mvrange 511 --ref 4 --bframe 3 --slices 4 --b-pyramid "strict" --open-gop "bluray" --fade-compensate 0.7 --subme 9 --trellis 1 --me "umh" --aq-mode 2 --aud --nal-hrd "vbr" --colorprim "bt709" --transfer "bt709" --colormatrix "bt709" --videoformat "ntsc" --sar 1:1 --qpfile %CHAPTERS% --threads 0 --thread-input --output NUL %E_SRC% 2> %LOG_FILE_1%

REM 2ème passe
x264_x64.exe --profile "high" --preset "placebo" --tune %TUNING% --pass 2 --bitrate %2 --stats %STAT_FILE% --level "4.1" --qpmin 0 --vbv-maxrate %MAX_BR% --vbv-bufsize %BUF_BR% --keyint 24 --min-keyint 2 --mvrange 511 --ref 4 --bframe 3 --slices 4 --b-pyramid "strict" --open-gop "bluray" --fade-compensate 0.7 --aq-mode 2 --aud --nal-hrd "vbr" --colorprim "bt709" --transfer "bt709" --colormatrix "bt709" --videoformat "ntsc" --sar 1:1 --qpfile %CHAPTERS% --threads 0 --thread-input --output %E_DST% %E_SRC% 2> %LOG_FILE_2%
Here log of 1rst pass :
Code:
avs [info]: 1920x1080p 1:1 @ 24000/1001 fps (cfr)
x264 [info]: using SAR=1/1
x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2
x264 [info]: profile High, level 4.1
x264 [info]: frame I:12956 Avg QP: 1.52  size:538653
x264 [info]: frame P:79103 Avg QP: 3.88  size:369120
x264 [info]: frame B:171635 Avg QP:12.07  size: 32754
x264 [info]: consecutive B-frames:  4.9% 11.6% 16.2% 67.3%
x264 [info]: mb I  I16..4: 47.1% 18.8% 34.1%
x264 [info]: mb P  I16..4: 14.1% 21.7% 11.5%  P16..4: 14.1%  7.4%  4.6%  0.3%  1.2%    skip:25.1%
x264 [info]: mb B  I16..4:  0.7%  1.3%  0.3%  B16..8: 26.6%  7.7%  3.2%  direct: 5.5%  skip:54.7%  L0:42.6% L1:42.8% BI:14.6%
x264 [info]: 8x8 transform intra:40.2% inter:55.9%
x264 [info]: direct mvs  spatial:100.0% temporal:0.0%
x264 [info]: coded y,uvDC,uvAC intra: 89.4% 70.4% 69.1% inter: -16.5% -14.2% -9.6%
x264 [info]: i16 v,h,dc,p: 28%  9% 47% 15%
x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 15% 28%  6%  6%  7%  6%  7%  8%
x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 16% 12% 14%  9% 10% 10%  9%  9% 11%
x264 [info]: i8c dc,h,v,p: 65% 15% 14%  6%
x264 [info]: Weighted P-Frames: Y:4.0%
x264 [info]: ref P L0: 76.0%  8.7% 13.1%  2.1%  0.1%
x264 [info]: ref B L0: 93.8%  6.2%
x264 [info]: ref B L1: 95.0%  5.0%
x264 [info]: kb/s:30404.16

encoded 263694 frames, 16.26 fps, 30404.16 kb/s
Log 2nd pass :
Code:
avs [info]: 1920x1080p 1:1 @ 24000/1001 fps (cfr)
x264 [info]: using SAR=1/1
x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2
x264 [info]: profile High, level 4.1
x264 [info]: frame I:12956 Avg QP: 1.09  size:535719
x264 [info]: frame P:79103 Avg QP: 2.61  size:411363
x264 [info]: frame B:171635 Avg QP:13.50  size: 28142
x264 [info]: consecutive B-frames:  4.9% 11.6% 16.2% 67.3%
x264 [info]: mb I  I16..4: 50.4%  5.4% 44.2%
x264 [info]: mb P  I16..4: 13.2%  8.5% 17.6%  P16..4: 19.2% 10.9%  4.6%  0.3%  0.9%    skip:24.9%
x264 [info]: mb B  I16..4:  0.4%  0.7%  0.2%  B16..8: 28.2%  7.8%  3.0%  direct: 6.0%  skip:53.6%  L0:43.2% L1:43.8% BI:13.1%
x264 [info]: 8x8 transform intra:18.6% inter:17.2%
x264 [info]: direct mvs  spatial:99.6% temporal:0.4%
x264 [info]: coded y,uvDC,uvAC intra: 88.2% 71.0% 69.8% inter: -15.3% -14.1% -11.2%
x264 [info]: i16 v,h,dc,p: 27%  8% 51% 14%
x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 16% 15% 30%  6%  6%  6%  6%  7%  8%
x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 13% 19%  8%  9%  9%  8%  9% 10%
x264 [info]: i8c dc,h,v,p: 65% 15% 14%  6%
x264 [info]: Weighted P-Frames: Y:4.2%
x264 [info]: ref P L0: 80.0% 11.9%  7.0%  1.1%  0.0%
x264 [info]: ref B L0: 94.3%  5.7%
x264 [info]: ref B L1: 95.2%  4.8%
x264 [info]: kb/s:32231.34

encoded 263694 frames, 3.59 fps, 32231.34 kb/s
There is 2 things i find unusual, so i was wondering is things were all right.
- It's the first time i see so much QP differences between I, P and B. Usualy, they are closer.
- Are negatives values normal for inter % ?
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Old 2nd September 2010, 23:14   #2  |  Link
LoRd_MuldeR
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Those negative % numbers don't look kosher to me. Not sure about the QP values, the difference looks "striking" at least.

But you are using both, insane settings (--preset "placebo") and unofficial patches (--fade-compensate 0.7). So "unexpected" things might happen

More important, does the actual output look "wrong" somehow? Anyway, I'd recommend to try a "vanilla" build and compare the results...
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Last edited by LoRd_MuldeR; 2nd September 2010 at 23:32.
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Old 3rd September 2010, 08:48   #3  |  Link
jpsdr
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No, i've quickly checked the file, and didn't see anything wrong...
I've encoded others files with same settings, and get QP around 5/6/13, and no negative % values.
The only thing i that that file is a 4/3 video, so with black borders left and right, the other files with 'correct' values were all 16/9 videos.
I should have this evening the result of a second 4/3 video file i'm encoding right now, and see if i'm still having these unusual values.
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Old 5th September 2010, 14:46   #4  |  Link
LoRd_MuldeR
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Fixed?
http://git.videolan.org/gitweb.cgi?p...3516142da62e98
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