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hao-ai-lab-FastVideo/examples/inference/basic/basic.py
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2025-07-29 01:11:01 +00:00

65 lines
2.8 KiB
Python

from fastvideo import VideoGenerator
import time
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(
# "weizhou03/Wan2.1-Fun-1.3B-InP-Diffusers",
"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=False,
# image_encoder_cpu_offload=False,
)
sampling_param = SamplingParam.from_pretrained("Wan-AI/Wan2.1-T2V-1.3B-Diffusers")
sampling_param.num_inference_steps = 50
# with open('Prompts.txt', 'r') as file:
# prompts = file.readlines()
# for prompt in prompts:
# prompt = prompt.strip()
# video = generator.generate_video(prompt, output_path=OUTPUT_PATH, save_video=True, sampling_param=sampling_param)
# sampling_param.num_frames = 45
# sampling_param.image_path = "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/astronaut.jpg"
# Generate videos with the same simple API, regardless of GPU count
prompt = (
"A curious raccoon peers through a vibrant field of yellow sunflowers, its eyes "
"wide with interest. The playful yet serene atmosphere is complemented by soft "
"natural light filtering through the petals. Mid-shot, warm and cheerful tones."
)
start_time = time.perf_counter()
video = generator.generate_video(prompt, output_path=OUTPUT_PATH, save_video=True)
end_time = time.perf_counter()
gen_time = end_time - start_time
# 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.")
start_time = time.perf_counter()
video2 = generator.generate_video(prompt2, output_path=OUTPUT_PATH, save_video=True)
end_time = time.perf_counter()
gen_time2 = end_time - start_time
print(f"Time taken to generate video: {gen_time} seconds")
print(f"Time taken to generate video: {gen_time2} seconds")
if __name__ == "__main__":
main()