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15th April 2019, 17:29 | #1 | Link |
FishmanMod Android Dev
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x264 Preset settings not correct?
I encode my videos mostly using Preset Slower or Veryslow but I've noticed that the number of --ref frames are not correct. Slower should have --ref 8 and it encodes with --ref 4, veryslow should have --ref 16 but you get --ref 4... and the same for Placebo.
I've noticed this in a few variants of x264... Handbrake/ A.K.A Vidcoder, ffmpeg and x264.exe. I was wondering, was this changed and not updated in the Full Help or a bug?
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"Cinderella story, out of nowhere, former greenskeeper, now about to become the Masters champion. It looks like a mirac- it's in the hole!" |
15th April 2019, 17:58 | #2 | Link | |
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15th April 2019, 18:28 | #3 | Link | |
FishmanMod Android Dev
Join Date: Apr 2004
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Quote:
Same settings for the other variants, handbrake and ffmpeg, with same results. Code:
General Complete name : C:\Temp\RipBot264temp\video.264 Format : AVC Format/Info : Advanced Video Codec File size : 1.86 MiB Duration : 6 s 757 ms Overall bit rate : 2 308 kb/s Writing library : x264 core 157 r2969 d4099dd Encoding settings : cabac=1 / ref=4 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=crf / mbtree=1 / crf=20.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=3:0.85 Video Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4 Format settings : CABAC / 4 Ref Frames Format settings, CABAC : Yes Format settings, RefFrames : 4 frames Duration : 6 s 757 ms Bit rate : 2 308 kb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate : 23.976 (24000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.046 Stream size : 1.81 MiB (98%) Writing library : x264 core 157 r2969 d4099dd Encoding settings : cabac=1 / ref=4 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=crf / mbtree=1 / crf=20.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=3:0.85 Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709
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"Cinderella story, out of nowhere, former greenskeeper, now about to become the Masters champion. It looks like a mirac- it's in the hole!" Last edited by Fishman0919; 15th April 2019 at 18:35. |
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15th April 2019, 18:40 | #4 | Link |
FishmanMod Android Dev
Join Date: Apr 2004
Location: Somewhere else, maybe Arizona Bay
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without aq-mode 3
"D:\RipBot264v1.22.0\Tools\ffmpeg\bin\ffmpeg.exe" -loglevel panic -i "C:\Temp\RipBot264temp\job2\job2.avs" -strict -1 -f yuv4mpegpipe - | "D:\RipBot264v1.22.0\tools\x264\x264_x64.exe" --crf 20 --fps 24000/1001 --min-keyint 24 --keyint 240 --frames 111487 --sar 1:1 --level 4.0 --preset veryslow --stdin y4m --output "C:\Temp\RipBot264temp\video.264" - Code:
General Complete name : C:\Temp\RipBot264temp\video.264 Format : AVC Format/Info : Advanced Video Codec File size : 1.10 MiB Duration : 4 s 546 ms Overall bit rate : 2 025 kb/s Writing library : x264 core 157 r2969 d4099dd Encoding settings : cabac=1 / ref=4 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=crf / mbtree=1 / crf=20.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00 Video Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4 Format settings : CABAC / 4 Ref Frames Format settings, CABAC : Yes Format settings, RefFrames : 4 frames Duration : 4 s 546 ms Bit rate : 2 025 kb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate : 23.976 (24000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.041 Stream size : 1.07 MiB (97%) Writing library : x264 core 157 r2969 d4099dd Encoding settings : cabac=1 / ref=4 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=crf / mbtree=1 / crf=20.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
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"Cinderella story, out of nowhere, former greenskeeper, now about to become the Masters champion. It looks like a mirac- it's in the hole!" |
15th April 2019, 18:59 | #6 | Link |
FishmanMod Android Dev
Join Date: Apr 2004
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no, only difference between level 4.0 and 4.1, that I know of, is --vbv-bufsize and --vbv-maxrate
"D:\RipBot264v1.22.0\Tools\ffmpeg\bin\ffmpeg.exe" -loglevel panic -i "C:\Temp\RipBot264temp\job2\job2.avs" -strict -1 -f yuv4mpegpipe - | "D:\RipBot264v1.22.0\tools\x264\x264_x64.exe" --crf 20 --fps 24000/1001 --min-keyint 24 --keyint 240 --frames 111487 --sar 1:1 --level 4.1 --preset veryslow --stdin y4m --output "C:\Temp\RipBot264temp\video.264" - Code:
General Complete name : C:\Temp\RipBot264temp\video.264 Format : AVC Format/Info : Advanced Video Codec File size : 1 000 KiB Duration : 4 s 254 ms Overall bit rate : 1 926 kb/s Writing library : x264 core 157 r2969 d4099dd Encoding settings : cabac=1 / ref=4 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=crf / mbtree=1 / crf=20.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00 Video Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4.1 Format settings : CABAC / 4 Ref Frames Format settings, CABAC : Yes Format settings, RefFrames : 4 frames Duration : 4 s 254 ms Bit rate : 1 926 kb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate : 23.976 (24000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.039 Stream size : 1 000 KiB (100%) Writing library : x264 core 157 r2969 d4099dd Encoding settings : cabac=1 / ref=4 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=crf / mbtree=1 / crf=20.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00 Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709
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"Cinderella story, out of nowhere, former greenskeeper, now about to become the Masters champion. It looks like a mirac- it's in the hole!" Last edited by Fishman0919; 15th April 2019 at 19:04. |
15th April 2019, 19:16 | #7 | Link | |
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Quote:
1080p: 4 refs 720p : 9 refs
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15th April 2019, 19:21 | #8 | Link |
FishmanMod Android Dev
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Yes, just found that... Thank You!
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"Cinderella story, out of nowhere, former greenskeeper, now about to become the Masters champion. It looks like a mirac- it's in the hole!" |
24th April 2019, 17:36 | #9 | Link |
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ref=MaxDpbMbs/(x*y) - we round down (if 4.99 then 4)
x=width/16 | y=height/16 - we round up (if 80.01 then 81) level - MaxDpbMbs 3.0 - 8100 (480p30) 3.1 - 18000 (720p30) 3.2 - 20480 (720p60) 4.0 - 32768 (1080p30) 4.1 - 32768 (1080p30) 4.2 - 34816 (1080p60) 5.0 - 110400 (2560x1920p30) 5.1 - 184320 (2160p30) 5.2 - 184320 (2160p60) level - vbv-maxrate and vbv-bufsize (Profile: Baseline-Main | High | High 10 | High 422-444) 3.0 - 10000 12500 30000 40000 3.1 - 14000 17500 42000 56000 3.2 - 20000 25000 60000 80000 4.0 - 20000 25000 60000 80000 4.1 - 50000 62500 150000 200000 4.2 - 50000 62500 150000 200000 5.0 - 135000 168750 405000 540000 5.1 - 240000 300000 720000 960000 If you specify a --level and --preset, then the --ref is calculated automatically! but no more than stipulated by --preset It is strange that the codec does not do automatic --vbv-maxrate and --vbv-bufsize, if --level and --profile (and --bluray-compat) is specified This will help to avoid many problems when a low CRF value is indicated. Last edited by zub35; 24th April 2019 at 18:24. |
24th April 2019, 21:33 | #10 | Link | |
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Last edited by sneaker_ger; 24th April 2019 at 21:35. |
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