app.py

import gradio as gr
import torch
from longcat_video import LongcatVideoPipeline

pipe = LongcatVideoPipeline.from_pretrained(
    "meituan-longcat/LongCat-Video",
    torch_dtype=torch.float16,
    device_map="auto"
)

def generate_video(prompt):
    video = pipe.text_to_video(prompt)
    video.save("output.mp4")
    return "output.mp4"

gr.Interface(
    fn=generate_video,
    inputs=gr.Textbox(label="Prompt"),
    outputs=gr.Video(label="Output Video"),
    title="LongCat-Video Demo"
).launch()