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sglang/python/sglang/multimodal_gen/configs/sample/ltx_2.py
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2026-01-24 12:51:37 +08:00

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Python

import dataclasses
from sglang.multimodal_gen.configs.sample.sampling_params import SamplingParams
@dataclasses.dataclass
class LTX2SamplingParams(SamplingParams):
"""Sampling parameters for LTX-2."""
# Match the reference defaults used by ltx-pipelines (one-stage).
# See: LTX-2/packages/ltx-pipelines/src/ltx_pipelines/utils/constants.py
seed: int = 10
# Video parameters
height: int = 512
width: int = 768
num_frames: int = 121
fps: int = 24
# Audio specific
generate_audio: bool = True
# Denoising parameters
guidance_scale: float = 4.0
num_inference_steps: int = 40
# Match ltx-pipelines default negative prompt (covers video + audio artifacts).
negative_prompt: str = (
"blurry, out of focus, overexposed, underexposed, low contrast, washed out colors, excessive noise, "
"grainy texture, poor lighting, flickering, motion blur, distorted proportions, unnatural skin tones, "
"deformed facial features, asymmetrical face, missing facial features, extra limbs, disfigured hands, "
"wrong hand count, artifacts around text, inconsistent perspective, camera shake, incorrect depth of "
"field, background too sharp, background clutter, distracting reflections, harsh shadows, inconsistent "
"lighting direction, color banding, cartoonish rendering, 3D CGI look, unrealistic materials, uncanny "
"valley effect, incorrect ethnicity, wrong gender, exaggerated expressions, wrong gaze direction, "
"mismatched lip sync, silent or muted audio, distorted voice, robotic voice, echo, background noise, "
"off-sync audio, incorrect dialogue, added dialogue, repetitive speech, jittery movement, awkward "
"pauses, incorrect timing, unnatural transitions, inconsistent framing, tilted camera, flat lighting, "
"inconsistent tone, cinematic oversaturation, stylized filters, or AI artifacts."
)