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hao-ai-lab-FastVideo/examples/inference/basic/basic_ltx2_base.py
T
2026-02-09 17:32:57 -08:00

55 lines
2.6 KiB
Python

from fastvideo import VideoGenerator
PROMPT = (
"A warm sunny backyard. The camera starts in a tight cinematic close-up "
"of a woman and a man in their 30s, facing each other with serious "
"expressions. The woman, emotional and dramatic, says softly, \"That's "
"it... Dad's lost it. And we've lost Dad.\" The man exhales, slightly "
"annoyed: \"Stop being so dramatic, Jess.\" A beat. He glances aside, "
"then mutters defensively, \"He's just having fun.\" The camera slowly "
"pans right, revealing the grandfather in the garden wearing enormous "
"butterfly wings, waving his arms in the air like he's trying to take "
"off. He shouts, \"Wheeeew!\" as he flaps his wings with full commitment. "
"The woman covers her face, on the verge of tears. The tone is deadpan, "
"absurd, and quietly tragic."
)
official_negative_prompt = (
"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."
)
def main() -> None:
# Uses FastVideo default sampling settings for LTX2 base.
generator = VideoGenerator.from_pretrained(
"Davids048/LTX2-Base-Diffusers",
num_gpus=1,
)
output_path = "outputs_video/ltx2_basic/output_ltx2_base_t2v_1088_1920_1.0.mp4"
generator.generate_video(
prompt=PROMPT,
output_path=output_path,
save_video=True,
num_frames=121,
height=1088,
width=1920,
fps=24,
negative_prompt=official_negative_prompt,
guidance_scale=3.0,
)
generator.shutdown()
if __name__ == "__main__":
main()