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hao-ai-lab-FastVideo/examples/inference/basic/basic.py
T
2025-08-30 22:14:54 -07:00

47 lines
1.9 KiB
Python

from fastvideo import VideoGenerator
from fastvideo.configs.sample import SamplingParam
OUTPUT_PATH = "video_samples"
def main():
# FastVideo will automatically use the optimal default arguments for the
# model.
# If a local path is provided, FastVideo will make a best effort
# attempt to identify the optimal arguments.
generator = VideoGenerator.from_pretrained(
"Wan-AI/Wan2.1-T2V-1.3B-Diffusers",
# FastVideo will automatically handle distributed setup
num_gpus=1,
use_fsdp_inference=True,
dit_cpu_offload=False,
vae_cpu_offload=False,
text_encoder_cpu_offload=True,
pin_cpu_memory=True, # set to false if low CPU RAM or hit obscure "CUDA error: Invalid argument"
ti2v_task=True,
# image_encoder_cpu_offload=False,
)
sampling_param = SamplingParam.from_pretrained("Wan-AI/Wan2.1-T2V-1.3B-Diffusers")
# sampling_param.num_frames = 45
sampling_param.image_path = "test.jpg"
# Generate videos with the same simple API, regardless of GPU count
prompt = (
"A girl is packing a suitcase when stuff suddently starts flying around the room."
)
video = generator.generate_video(prompt, output_path=OUTPUT_PATH, save_video=True)
# video = generator.generate_video(prompt, sampling_param=sampling_param, output_path="wan_t2v_videos/")
# Generate another video with a different prompt, without reloading the
# model!
# prompt2 = (
# "A majestic lion strides across the golden savanna, its powerful frame "
# "glistening under the warm afternoon sun. The tall grass ripples gently in "
# "the breeze, enhancing the lion's commanding presence. The tone is vibrant, "
# "embodying the raw energy of the wild. Low angle, steady tracking shot, "
# "cinematic.")
# video2 = generator.generate_video(prompt2, output_path=OUTPUT_PATH, save_video=True)
if __name__ == "__main__":
main()