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+--- Thread: SVT-AV1 - Tritium (/thread-4506.html)
SVT-AV1 - Tritium - lameuser - 08.10.2026
Hi Selur !
At first ,many many thanks for your great work !
Well.
Few days ago i noticed SVT-AV1 - Tritium. Obviously it's an SVT-AV1 fork ,but far better than the mainline version.
Can you please add this encoder to Hybrid ?
https://github.com/Uranite/svt-av1-tritium
AFAIK only StaxRip supports it ,but the GUI and other functions....
Thanks!
RE: SVT-AV1 - Tritium - Selur - 09.10.2026
No real plans to support it.
Assuming the command interface didn't change you could simply switch it out and use the command line addition to use additional options.
Cu Selur
RE: SVT-AV1 - Tritium - lameuser - 12.10.2026
Acknowledged,but....
Maybe adding the followings as separated tabs :
Psychovisual Options:
--enable-variance-boost Enable Variance Boost, default is 1 [0-1]
--variance-boost-strength Variance Boost strength, default is 2 [1-4]
--variance-octile Octile for Variance Boost, default is 5 [1-8]
--variance-boost-curve Curve for Variance Boost, default is 0 [0-3]
--qp-scale-compress-strength QP scale compress strength, default is 1.0 [0.0-8.0]
--adaptive-film-grain Adapts film grain blocksize based on video resolution, default is 1 [0-1]
--max-tx-size Limits the allowed transform sizes to the specified, default is 64 [32,64]
--ac-bias Strength of AC bias in rate distortion, default is 1.0 [0.0-8.0]
--noise-norm-strength Noise normalization strength, default is 1 [0-4]
--kf-tf-strength Adjust TF strength on keyframes, default is 1 (4x weaker than mainline) [0-4]
--alt-lambda-factors Use alternative RDO lambda factors (from SVT-AV1 3.0.2), default is 1 [0-1]
--sharp-tx Sharp transform optimization, default is 1 [0-1]
--alt-ssim-tuning Alternative SSIM tuning methods for tune 2, default is 0 [0-1]
--hbd-mds High Bit-Depth Mode Decision, default is 0 [0: preset-determined, 1 = 10-bit, 2 = hybrid 8/10-bit]
--tx-bias Transform size/type bias type, default is 0 [0-3]; 1 = full, 2, transform size only, 3 = interpolation only
--complex-hvs Enable highest complexity HVS model, default is 0 [0-1]
--noise-adaptive-filtering Control noise detection for CDEF/restoration filtering, default is 2 [0: off, 1: both CDEF and restoration are on 2: default tune behavior, 3: CDEF only, 4: restoration only)]
--cdef-scaling Controls scaling of the CDEF strength computation, default is 15 (1x scaling) [1: minimum, 8: ~0.5x, 30: 2x]
--zones CRF/CQP zones, format: start,end,quality;start,end,quality;..., default is no zones
--enable-alt-cdef Enable alternative CDEF biases.Default is 0 [0-3].
--enable-alt-dlf Enable alternative DLF biases.Default is 0 [0-3].
--enable-daala Enable Daala distortion metric, default is 0 [0-4]
RE: SVT-AV1 - Tritium - Selur - 12.10.2026
no, not planning to add this atm. I still have tons of work to do to get Vapoursynth R80+ support working.
Tons of fixes and filter that need porting to API4 or replacements,...