Add Support for LTX-2.3 Models #13217
dg845
merged
43 commits into
main
from
ltx2-3-pipeline
Initial implementation of perturbed attn processor for LTX 2.3
6c7e720d
yiyixuxu
commented
on 2026-03-06
Update DiT block for LTX 2.3 + add self_attention_mask
e90b90a3
Add flag to control using perturbed attn processor for now
f768f8da
Add support for new video upsampling blocks used by LTX-2.3
cde67486
Support LTX-2.3 Big-VGAN V2-style vocoder
236eb8db
Initial implementation of LTX-2.3 vocoder with bandwidth extender
1e89cb36
Initial support for LTX-2.3 per-modality feature extractor
5a44adb0
Refactor so that text connectors own all text encoder hidden_states n…
4ff31688
Fix some bugs for inference
835bed61
Fix LTX-2.X DiT block forward pass
19004efc
Support prompt timestep embeds and prompt cross attn modulation
4dfcfeb3
Add LTX-2.3 configs to conversion script
13292dde
Support converting LTX-2.3 DiT checkpoints
0528fde4
Support converting LTX-2.3 Video VAE checkpoints
c5e1fcc4
Support converting LTX-2.3 Vocoder with bandwidth extender
50da4df0
Support converting LTX-2.3 text connectors
42062803
Don't convert any upsamplers for now
e719d32c
Support self attention mask for LTX2Pipeline
fbb50d96
Fix some inference bugs
de3f869b
Support self attn mask and sigmas for LTX-2.3 I2V, Cond pipelines
5056aa82
Support STG and modality isolation guidance for LTX-2.3
f875031d
make style and make quality
652d363d
Make audio guidance values default to video values by default
d018534d
Update to LTX-2.3 style guidance rescaling
c0bb2ef2
Support cross timesteps for LTX-2.3 cross attention modulation
ab0e5b5c
Fix RMS norm bug for LTX-2.3 text connectors
f78c3dae
Perform guidance rescale in sample (x0) space following original code
63b3c9f2
Support LTX-2.3 Latent Spatial Upsampler model
6188af22
Support LTX-2.3 distilled LoRA
89f8cc43
Support LTX-2.3 Distilled checkpoint
f1a812aa
Support LTX-2.3 prompt enhancement
145e8e48
Make LTX-2.X processor non-required so that tests pass
8a580734
Fix test_components_function tests for LTX2 T2V and I2V
93247a0a
Fix LTX-2.3 Video VAE configuration bug causing pixel jitter
17b53f08
Merge branch 'main' into ltx2-3-pipeline
6ee66c9d
dg845
changed the title 
Apply suggestions from code review
c016ce56
Refactor LTX-2.X Video VAE upsampler block init logic
2feb4609
Refactor LTX-2.X guidance rescaling to use rescale_noise_cfg
27404098
Use generator initial seed to control prompt enhancement if available
5d8b6342
Remove self attention mask logic as it is not used in any current pip…
b0723de8
Commit fixes suggested by claude code (guidance in sample (x0) space,…
67a9ce33
Use constant shift following original code
4cbedd7c
yiyixuxu
approved these changes
on 2026-03-19
Merge branch 'main' into ltx2-3-pipeline
8a9a1480
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