digital-garbageandClaude Sonnet 4.6
5d5b171c7f
New sampler targeting LTX2.3 distilled LoRA and similar 4-8 step flow-matching distilled video models. Three improvements over plain Euler: Adams-Bashforth 2-step multistep (order=2, default): Extrapolates the denoised direction from two consecutive steps using variable-step-size AB2 coefficients: (1 + r/2) * d_curr - (r/2) * d_prev where r = h_current / h_previous. Gives second-order accuracy across the large sigma jumps typical of distilled schedules at zero extra model-call cost. Heun predictor-corrector on final steps (final_correction_steps=1, default): Replaces the last N steps with a Heun pass: Euler predictor to sigma_next, second model call at sigma_next for the corrector direction, averaged update. Costs one extra model call per corrected step and significantly improves sharpness and detail in the steps that define the final output. Multistep history is invalidated after each Heun step. Optional s_noise (default 0.0 = deterministic): Small ancestral-style noise injection (scaled by sigma_up) for diversity. Distilled models are trained as pure ODE; any non-zero value is an intentional deviation. Keep below 0.15 if used at all. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
113 lines
4.5 KiB
Python
113 lines
4.5 KiB
Python
# ComfyUI-FunPack/__init__.py
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if __package__:
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from .conditioning import (
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FunPackLorebookEnhancer,
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FunPackPromptCombiner,
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FunPackPromptEnhancer,
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FunPackStoryWriter,
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FunPackVideoRefinerV2,
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)
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from .image_processing import (
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FunPackClipVisionOutputCombine,
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FunPackContinueVideo,
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FunPackStoryMemKeyframeExtractor,
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FunPackStoryMemLastFrameExtractor,
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FunPackVideoStitch,
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)
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from .model_management import FunPackApplyLoraWeights, FunPackLoraLoader
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from .samplers import FunPackHybridEuler2SSampler, FunPackDistilledFlowSampler
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from .context_transition import FunPackContextTransitionWindows
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from .templates import FunPackRefinementKeyLoader, FunPackSceneBuilder
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else:
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# Standalone tests may not have the full ComfyUI/CUDA runtime loaded.
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from conditioning import (
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FunPackLorebookEnhancer,
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FunPackPromptCombiner,
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FunPackPromptEnhancer,
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FunPackStoryWriter,
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FunPackVideoRefinerV2,
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)
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try:
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from image_processing import (
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FunPackClipVisionOutputCombine,
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FunPackContinueVideo,
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FunPackStoryMemKeyframeExtractor,
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FunPackStoryMemLastFrameExtractor,
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FunPackVideoStitch,
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)
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except Exception:
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FunPackClipVisionOutputCombine = None
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FunPackContinueVideo = None
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FunPackStoryMemKeyframeExtractor = None
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FunPackStoryMemLastFrameExtractor = None
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FunPackVideoStitch = None
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try:
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from model_management import FunPackApplyLoraWeights, FunPackLoraLoader
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except Exception:
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FunPackApplyLoraWeights = None
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FunPackLoraLoader = None
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try:
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from samplers import FunPackHybridEuler2SSampler, FunPackDistilledFlowSampler
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except Exception:
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FunPackHybridEuler2SSampler = None
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FunPackDistilledFlowSampler = None
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try:
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from context_transition import FunPackContextTransitionWindows
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except Exception:
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FunPackContextTransitionWindows = None
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try:
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from templates import FunPackRefinementKeyLoader, FunPackSceneBuilder
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except Exception:
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FunPackRefinementKeyLoader = None
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FunPackSceneBuilder = None
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WEB_DIRECTORY = "./web"
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NODE_CLASS_MAPPINGS = {
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"FunPackPromptCombiner": FunPackPromptCombiner,
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"FunPackStoryMemKeyframeExtractor": FunPackStoryMemKeyframeExtractor,
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"FunPackStoryMemLastFrameExtractor": FunPackStoryMemLastFrameExtractor,
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"FunPackPromptEnhancer": FunPackPromptEnhancer,
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"FunPackStoryWriter": FunPackStoryWriter,
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"FunPackVideoStitch": FunPackVideoStitch,
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"FunPackClipVisionOutputCombine": FunPackClipVisionOutputCombine,
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"FunPackContinueVideo": FunPackContinueVideo,
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"FunPackLorebookEnhancer": FunPackLorebookEnhancer,
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"FunPackVideoRefinerV2": FunPackVideoRefinerV2,
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"FunPackHybridEuler2SSampler": FunPackHybridEuler2SSampler,
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"FunPackDistilledFlowSampler": FunPackDistilledFlowSampler,
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"FunPackContextTransitionWindows": FunPackContextTransitionWindows,
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"FunPackApplyLoraWeights": FunPackApplyLoraWeights,
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"FunPackLoraLoader": FunPackLoraLoader,
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"FunPackRefinementKeyLoader": FunPackRefinementKeyLoader,
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"FunPackSceneBuilder": FunPackSceneBuilder,
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}
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NODE_CLASS_MAPPINGS = {name: cls for name, cls in NODE_CLASS_MAPPINGS.items() if cls is not None}
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NODE_DISPLAY_NAME_MAPPINGS = {
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"FunPackPromptCombiner": "FunPack Prompt Combiner",
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"FunPackStoryMemKeyframeExtractor": "FunPack StoryMem Keyframe Extractor",
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"FunPackStoryMemLastFrameExtractor": "FunPack StoryMem Last Frame Extractor",
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"FunPackPromptEnhancer": "FunPack Prompt Enhancer (Standalone)",
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"FunPackStoryWriter": "FunPack Story Writer",
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"FunPackVideoStitch": "FunPack Video Stitch",
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"FunPackClipVisionOutputCombine": "FunPack CLIP Vision Output Combine",
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"FunPackContinueVideo": "FunPack Continue Video",
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"FunPackLorebookEnhancer": "FunPack Lorebook Enhancer",
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"FunPackVideoRefinerV2": "FunPack Video Refiner V2",
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"FunPackHybridEuler2SSampler": "FunPack Hybrid Euler 2S Sampler",
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"FunPackDistilledFlowSampler": "FunPack Distilled Flow Sampler",
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"FunPackContextTransitionWindows": "FunPack Context Transition Windows",
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"FunPackApplyLoraWeights": "FunPack Apply LoRA Weights",
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"FunPackLoraLoader": "FunPack LoRA Loader",
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"FunPackRefinementKeyLoader": "FunPack Refinement Key Loader",
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"FunPackSceneBuilder": "FunPack Scene Builder",
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}
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__all__ = [
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"NODE_CLASS_MAPPINGS",
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"NODE_DISPLAY_NAME_MAPPINGS",
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"WEB_DIRECTORY",
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]
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