The shared repo was written back onto the registry row, a module-level
singleton, so turning the setting off left the row pointing at the shared copy
for the rest of the session. It is chosen into locals instead.
The subfolder name doubles as the pipeline argument, so a repo shipping a
second transformer beside the default one had no way to load it: the argument
was dropped and the default weights stayed. dit_kwarg names the argument when
it differs from the folder.
The modular branch returned the pipe instead of assigning it, so the video
tab and the API failed with "model not loaded" and the whole post-load tail
was skipped along with it.
DiffusionPipeline.download derives ignore_patterns from the passed components and
never reads the caller's, so the kwarg set in load_override was inert and diffusers
logged it as an unexpected keyword. The unsharded connectors duplicate it was meant
to skip was fetched on every LTX-2.3 mirror load.
Resolve the repo to a snapshot built from those patterns and hand from_pretrained
the folder instead of the id. That skips its download path, so the passed component
folders it would have pruned are pruned here instead. The connectors override drops
its own copy of the kwarg, which ModelMixin never read either.
First natively modular model: the pipeline is driven directly through
ModularPipeline, with components fetched per workflow (fl2va covers
text and first/last-frame conditioning).
- per-generation overrides snap the canvas to /32, align frames to
the 17n+5 grid and duration window, and keep the bespoke scheduler
pair
- group offload for modular pipelines applied per component in
sd_offload; re-application is a guarded no-op
- audio checkbox pops the audio decode block so decode and muxing are
skipped
- frames=1 renders a single still image: the duration floor lifts per
instance and sub-floor latents pad at the vae decoder
- progress and interrupt handling via a transformer forward pre-hook
- vae scale factor override, tuple-safe patch size
Implement the Lightricks two-stage recipe (diffusers PR #13217) for the
LTX-2.x Dev family: Stage 1 at half-res with full four-way guidance,
2x latent upsample, Stage 2 with distilled LoRA + scheduler swap + identity
guidance on STAGE_2_DISTILLED_SIGMA_VALUES.
Extends to both LTX-2.0 and LTX-2.3 Dev via per-family distilled-LoRA
repos carried on the caps; Distilled variants take the same flow minus
the LoRA swap. Auto-couples Refine with a fixed 2x upsample on any Dev
variant with a known LoRA when the user enables Refine without Upsample.
- caps: is_ltx_2_3, use_cross_timestep, default_dynamic_shift,
stage2_dev_lora_repo, supports_canonical_stage2, modality_default_scale,
guidance_rescale_default; LTX-2.x defaults realigned to canonical
cfg=3.0 / steps=30; per-variant STG block and four-way guidance wired
for non-distilled 2.x
- process: canonical Stage 1/Stage 2 helpers, scheduler + opts snapshot
under try/finally, per-family upsampler repo, audio latents threaded
from Stage 1 into Stage 2, use_cross_timestep gated per caps
- overrides: skip the redundant unsharded LTX-2.3 connectors blob and
share LTX2TextConnectors weights across 2.3 variants when te_shared_t5
- load: Gemma3 shared-TE path for LTX-2.3; gate use_dynamic_shifting=False
override to 0.9.x only so LTX-2.x stays on its canonical token-count
dynamic shift
Move cache tracking from ltx_util into video_load where shared.sd_model
lives, and invalidate the name-based hit when the cached class no longer
matches the current pipeline (e.g. after Unload Models triggers an
auto-reload of the default checkpoint).
- Drop the duplicate module-level loaded_model cache in ltx_util
- Add a pipe-class isinstance check around the cache hit in video_load
Ryan Meador
Vladimir Mandic
CalamitousFelicitousness
Dity0