import gradio as gr #import gradio.helpers import torch import os from glob import glob from pathlib import Path from typing import Optional from diffusers import StableVideoDiffusionPipeline from diffusers.utils import load_image, export_to_video from PIL import Image import uuid import random from huggingface_hub import hf_hub_download #gradio.helpers.CACHED_FOLDER = '/data/cache' pipe = StableVideoDiffusionPipeline.from_pretrained( "stabilityai/stable-video-diffusion-img2vid-xt-1-1", torch_dtype=torch.float16, variant="fp16" ) pipe.to("cuda") pipe.unet = torch.compile(pipe.unet, mode="reduce-overhead", fullgraph=True) #pipe.vae = torch.compile(pipe.vae, mode="reduce-overhead", fullgraph=True) max_64_bit_int = 2**63 - 1 def sample( image: Image, seed: Optional[int] = 42, randomize_seed: bool = True, motion_bucket_id: int = 127, fps_id: int = 6, version: str = "svd_xt", cond_aug: float = 0.02, decoding_t: int = 3, # Number of frames decoded at a time! This eats most VRAM. Reduce if necessary. device: str = "cuda", output_folder: str = "outputs", ): if image.mode == "RGBA": image = image.convert("RGB") if(randomize_seed): seed = random.randint(0, max_64_bit_int) generator = torch.manual_seed(seed) os.makedirs(output_folder, exist_ok=True) base_count = len(glob(os.path.join(output_folder, "*.mp4"))) video_path = os.path.join(output_folder, f"{base_count:06d}.mp4") frames = pipe(image, decode_chunk_size=decoding_t, generator=generator, motion_bucket_id=motion_bucket_id, noise_aug_strength=0.1, num_frames=25).frames[0] export_to_video(frames, video_path, fps=fps_id) torch.manual_seed(seed) return video_path, seed def resize_image(image, output_size=(1024, 576)): # Calculate aspect ratios target_aspect = output_size[0] / output_size[1] # Aspect ratio of the desired size image_aspect = image.width / image.height # Aspect ratio of the original image # Resize then crop if the original image is larger if image_aspect > target_aspect: # Resize the image to match the target height, maintaining aspect ratio new_height = output_size[1] new_width = int(new_height * image_aspect) resized_image = image.resize((new_width, new_height), Image.LANCZOS) # Calculate coordinates for cropping left = (new_width - output_size[0]) / 2 top = 0 right = (new_width + output_size[0]) / 2 bottom = output_size[1] else: # Resize the image to match the target width, maintaining aspect ratio new_width = output_size[0] new_height = int(new_width / image_aspect) resized_image = image.resize((new_width, new_height), Image.LANCZOS) # Calculate coordinates for cropping left = 0 top = (new_height - output_size[1]) / 2 right = output_size[0] bottom = (new_height + output_size[1]) / 2 # Crop the image cropped_image = resized_image.crop((left, top, right, bottom)) return cropped_image with gr.Blocks(css="footer {visibility: hidden}") as demo: gr.Markdown('''# AI 视频生成 #### 由单张图片生成一小段视频 ''') with gr.Row(): with gr.Column(): image = gr.Image(label="上传图片", type="pil") generate_btn = gr.Button("开始生成视频") video = gr.Video() with gr.Accordion("高级选项", open=False): seed = gr.Slider(label="Seed 种子数", value=42, randomize=True, minimum=0, maximum=max_64_bit_int, step=1) randomize_seed = gr.Checkbox(label="随机", value=True) motion_bucket_id = gr.Slider(label="Motion bucket id", info="控制画面运动", value=127, minimum=1, maximum=255) fps_id = gr.Slider(label="帧率", info="每秒的画面数量", value=6, minimum=5, maximum=30) image.upload(fn=resize_image, inputs=image, outputs=image, queue=False) generate_btn.click(fn=sample, inputs=[image, seed, randomize_seed, motion_bucket_id, fps_id], outputs=[video, seed], api_name="生成视频") gr.Examples( examples=[ "images/meteor.png", "images/shanghai.png", "images/girl.png" ], inputs=image, outputs=[video, seed], fn=sample, cache_examples=True, ) if __name__ == "__main__": demo.queue(max_size=20) demo.launch(share=True)