Files
hao-ai-lab-FastVideo/examples/inference/optimizations/text_encoder_quant_example.py
Davids048andClaude Opus 5.5 f571621ae7 [refactor]: move examples to generate(request) and from_config
Every example calls VideoGenerator.generate with a nested request instead
of generate_video keywords, and passes settings outside the from_pretrained
convenience keywords through VideoGenerator.from_config at their typed
paths. Each request and generator config equals what the keyword call built.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012M91wnVFmPEvJ9h39r5BH7
2026-10-03 02:14:36 +00:00

57 lines
2.5 KiB
Python

from fastvideo import VideoGenerator
import argparse
OUTPUT_PATH = "video_samples_wan2_2_5B_ti2v"
def main(text_encoder_path: str):
# 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.
model_name = "Wan-AI/Wan2.2-TI2V-5B-Diffusers"
generator = VideoGenerator.from_config({
"model_path": model_name,
"engine": {
# FastVideo will automatically handle distributed setup
"num_gpus": 1,
"use_fsdp_inference": True,
"offload": {
"dit": True,
"vae": False,
"text_encoder": False,
"pin_cpu_memory": True, # set to false if low CPU RAM or hit obscure "CUDA error: Invalid argument"
},
# AbsMaxFP8 is the quantization method used by ComfyUI;
# check fastvideo/layers/quantization/* for more quantization methods
"quantization": {"text_encoder_quant": "AbsMaxFP8"},
},
"pipeline": {
"components": {
# for Wan 2.2, this is the path to "umt5_xxl_fp8_e4m3fn_scaled.safetensors"
"text_encoder_weights": text_encoder_path,
},
},
})
# I2V is triggered just by passing in an image_path argument
prompt = "Summer beach vacation style, a white cat wearing sunglasses sits on a surfboard. The fluffy-furred feline gazes directly at the camera with a relaxed expression. Blurred beach scenery forms the background featuring crystal-clear waters, distant green hills, and a blue sky dotted with white clouds. The cat assumes a naturally relaxed posture, as if savoring the sea breeze and warm sunlight. A close-up shot highlights the feline's intricate details and the refreshing atmosphere of the seaside."
image_path = "https://huggingface.co/datasets/YiYiXu/testing-images/resolve/main/wan_i2v_input.JPG"
video = generator.generate({
"prompt": prompt,
"inputs": {"image_path": image_path},
"output": {"output_path": OUTPUT_PATH, "save_video": True},
})
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument(
"--text_encoder_path",
type=str,
required=True,
help="Path to the quantized text encoder safetensors file.",
)
args = parser.parse_args()
main(args.text_encoder_path)