VMAF 96 - preset 5 crf 9




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Encoding

Ab-av1
crf-search -i "D:\file.mkv" --pix-format yuv420p10le --svt fast-decode=1 --svt tune=0 --preset 5 --min-samples 20 --min-vmaf 96
crf 9 VMAF 96.13 predicted video stream size 1.80 GiB (8%) taking 63 minutes

Handbrake 1.8.2 (2024081000)
Video.svt-av1 10 bit fast decode Preset 5 crf 9
Audio.128 kbps opus 2.0
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File

Video: AV01 1920x1080 23.976fps [V: av1 main, yuv420p10le, 1920x1080 [default]]
Audio: Opus 48000Hz stereo 3072kbps [A: Stereo opus 128 kbps [eng] (opus, 48000 Hz, stereo) [default]]
Subtitle: Advanced SubStation Alpha [S: English [eng] (ass)]
Subtitle: Advanced SubStation Alpha [S: SDH [eng] (ass)]
Subtitle [S: SDH / PGS [eng] (pgs)]
Subtitle: Advanced SubStation Alpha [S: Canadian [fre] (ass)]
Subtitle [S: Latin American / PGS [spa] (pgs)]
Subtitle: Advanced SubStation Alpha [S: Latin American [spa] (ass)]
Subtitle [S: Forced Subtitles (auto)]
Subtitle: UTF-8 [S: No subtitles]

General
Unique ID : 67133130907514433062706196322056075144 (0x32815EE6B03862289DE5A03E06AEF788)
Complete name : Longlegs.2024.bluray.sdr.1080p.av1.vmaf96-Rosy.mkv
Format : Matroska
Format version : Version 4
File size : 1.88 GiB
Duration : 1 h 40 min
Overall bit rate : 2 679 kb/s
Frame rate : 23.976 FPS
Movie name : Longlegs.2024.bluray.sdr.1080p.av1.vmaf96-Rosy
Encoded date : 2024-11-07 05:49:40 UTC
Writing application : mkvmerge v88.0 ('All I Know') 64-bit
Writing library : libebml v1.4.5 + libmatroska v1.7.1
Cover : Yes
Attachments : cover.jpg

Video
ID : 1
Format : AV1
Format/Info : AOMedia Video 1
Format profile : [email protected]
Codec ID : V_AV1
Duration : 1 h 40 min
Bit rate : 2 548 kb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0 (Type 0)
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.051
Stream size : 1.79 GiB (95%)
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Audio
ID : 2
Format : Opus
Codec ID : A_OPUS
Duration : 1 h 40 min
Bit rate : 110 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 50.000 FPS (960 SPF)
Compression mode : Lossy
Stream size : 79.5 MiB (4%)
Title : Stereo opus 128 kbps
Language : English
Default : Yes
Forced : No
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Source

Video: MPEG4 Video (H264) 1920x1080 23.976fps [V: h264 high L4.1, yuv420p, 1920x1080 [default]]
Audio: DTS 48000Hz 6ch 6912kbps [A: English [eng] (dts-hd ma, 48000 Hz, 5.1(side), s24) [default]]
Audio: FLAC (framed) 48000Hz stereo 2304kbps [A: Commentary with director Osgood Perkins [eng] (flac, 48000 Hz, stereo, s24)]
Subtitle: UTF-8 [S: English [eng] (subrip)]
Subtitle: UTF-8 [S: SDH [eng] (subrip) [hearing impaired]]
Subtitle [S: SDH / PGS [eng] (pgs)]
Subtitle: UTF-8 [S: Canadian [fre] (subrip) [hearing impaired]]
Subtitle [S: Latin American / PGS [spa] (pgs)]
Subtitle: UTF-8 [S: Latin American [spa] (subrip)]
Subtitle [S: Forced Subtitles (auto)]
Subtitle: UTF-8 [S: No subtitles]

General
Unique ID : 88551649072267353406861169326479874442 (0x429E6D60BC42DAAD955A6F8E7283998A)
Complete name : Longlegs.2024.REPACK.1080p.Blu-ray.Remux.AVC.DTS-HD.MA.5.1-CiNEPHiLES.mkv
Format : Matroska
Format version : Version 4
File size : 26.8 GiB
Duration : 1 h 40 min
Overall bit rate mode : Variable
Overall bit rate : 38.1 Mb/s
Frame rate : 23.976 FPS
Movie name : Longlegs (2024)
Encoded date : 2024-09-15 19:18:14 UTC
Writing application : mkvmerge v87.0 ('Black as the Sky') 64-bit
Writing library : libebml v1.4.5 + libmatroska v1.7.1
IMDB : tt23468450
TMDB : movie/1226578

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference fra : 4 frames
Format settings, Slice count : 4 slices per frame
Codec ID : V_MPEG4/ISO/AVC
Duration : 1 h 40 min
Bit rate mode : Variable
Bit rate : 33.5 Mb/s
Maximum bit rate : 37.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
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) : 0.674
Time code of first frame : 00:00:00:00
Stream size : 23.6 GiB (88%)
Default : Yes
Forced : No
Source : Decal Releasing USA Blu-ray (2024)

Audio #1
ID : 2
Format : DTS XLL
Format/Info : Digital Theater Systems
Commercial name : DTS-HD Master Audio
Codec ID : A_DTS
Duration : 1 h 40 min
Bit rate mode : Variable
Bit rate : 3 483 kb/s
Channel(s) : 6 channels
Channel layout : C L R Ls Rs LFE
Sampling rate : 48.0 kHz
Frame rate : 93.750 FPS (512 SPF)
Bit depth : 24 bits
Compression mode : Lossless
Stream size : 2.45 GiB (9%)
Language : English
Default : Yes
Forced : No
Source : Decal Releasing USA Blu-ray (2024)
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Tools

Ab-av1
FFBitrateViewer
FFmpeg
FFmetrics
Freefilesync
Handbrake
Jackett
Mediainfo
Mkvtoolknix
Qbittorent
Scenerulez
Shutterencoder
VVV-virtualvolumeview
Xnconvert
Xnview mp


===================== AV1 guide v12 ========================

Step 1 - Check VMAF with Ab-av1

1. AV1
Source resolution → crf-search -i "c:\file.mkv" --pix-format yuv420p10le --svt fast-decode=1 --svt tune=0 --preset 5 --min-samples 20 --min-vmaf 98
1080p Downscale → crf-search -i "c:\file.mkv" --pix-format yuv420p10le --svt fast-decode=1 --svt tune=0 --preset 5 --min-samples 20 --min-vmaf 96 --vfilter "scale=-1:1080"
720p Downscale → crf-search -i "c:\file.mkv" --pix-format yuv420p10le --svt fast-decode=1 --svt tune=0 --preset 5 --min-samples 20 --min-vmaf 96 --vfilter "scale=-1:720"
Sample encode → sample-encode -i "c:\file.mkv" --pix-format yuv420p10le --svt fast-decode=1 --svt tune=0 --preset 5 --min-samples 20 --crf 20

2. x265
Source resolution → crf-search -i "c:\file.mkv" --encoder libx265 --pix-format yuv420p10le --preset medium --min-samples 20 --enc x265-params=fastdecode=1 --min-vmaf 98
1080p Downscale → crf-search -i "c:\file.mkv" --encoder libx265 --pix-format yuv420p10le --preset medium --min-samples 20 --enc x265-params=fastdecode=1 --min-vmaf 96 --vfilter "scale=-1:1080"
720p Downscale → crf-search -i "c:\file.mkv" --encoder libx265 --pix-format yuv420p10le --preset medium --min-samples 20 --enc x265-params=fastdecode=1 --min-vmaf 96 --vfilter "scale=-1:720"
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Step 2 - HandBrake

Summary:
- Container: MKV

Dimensions:
- Cropping: None
- Anamorphic: None
- Borders: None

Video:
- Encoder: AV1 (10-bit SVT)
- Framerate: Same as source
- Preset: 5
- Fast Decode: ✓
- Encoder Profile: Main
- Encoder Level: Auto
- Quality: CRF determined from "ab-av1"(1)

Audio:
- DTS to Opus Conversion:
- DTS 7.1 → Opus @ 512 kbps
- DTS 5.1 → Opus @ 384 kbps
- DTS 2.0 → Opus @ 128 kbps
*When passtrough? lossy codec(opus,aac, ac3, eac3,wma) 768-128 kbps
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Step 3 - Subtitles

- Original → passtrough
- Subtitle Translator
- Whisper OpenAI
- Opensubtitles
- Subtitlecat
*If size is an issue don`t use pgs, prefer ass/srt.
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References

References

1. Dolby, 2023. What are Dolby Vision profiles and levels? [Online]
2. Ozer, J., 2017. Video Encoding by the Numbers: Eliminate the Guesswork from your Streaming Video. Doceo Publishing.
3. Sayood, K., 2017. Introduction to Data Compression. 5th Edition.
4. Ozer, J., 2021. What is CBR, VBR, CRF, Capped-CRF? Rate Control Modes Explained.
5. Rassool, Reza. VMAF Reproducibility: Validating a Perceptual Practical Video Quality Metric.
6. Kah, A. e al. Fundamental relationships between subjective quality, user acceptance, and the VMAF metric for a quality-based bit rate ladder design for over-the-top video streaming services.