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import functools |
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from dataclasses import dataclass |
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import random |
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import gradio as gr |
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import spaces |
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import torch |
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from diffusers import WanPipeline, AutoencoderKLWan |
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from diffusers.utils import export_to_video, load_video |
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from vibt.wan import load_vibt_weight, encode_video |
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from vibt.scheduler import ViBTScheduler |
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import tempfile |
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import os |
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import cv2 |
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def get_fps(path): |
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cap = cv2.VideoCapture(path) |
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fps = cap.get(cv2.CAP_PROP_FPS) |
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cap.release() |
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return fps |
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base_model_id = "Wan-AI/Wan2.1-T2V-1.3B-Diffusers" |
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pipe = WanPipeline.from_pretrained(base_model_id, torch_dtype=torch.bfloat16) |
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pipe.to("cuda") |
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load_vibt_weight( |
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pipe.transformer, |
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"Yuanshi/ViBT", |
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"video/video_stylization.safetensors", |
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) |
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pipe.scheduler = ViBTScheduler.from_scheduler(pipe.scheduler) |
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@dataclass(frozen=True) |
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class SliderConfig: |
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label: str |
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minimum: float |
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maximum: float |
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step: float |
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value: float |
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info: str |
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@dataclass(frozen=True) |
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class PresetConfig: |
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shift_gamma: float |
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steps: int |
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guidance_scale: float |
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GAMMA_SLIDER = SliderConfig( |
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label="Shift Gamma", |
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minimum=1.0, |
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maximum=10.0, |
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step=0.5, |
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value=5.0, |
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info="Scheduler adjustment parameter.", |
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) |
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STEP_SLIDER = SliderConfig( |
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label="Inference Steps", |
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minimum=1, |
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maximum=28, |
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step=1, |
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value=10, |
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info="More steps improve quality but take longer.", |
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) |
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GUIDANCE_SLIDER = SliderConfig( |
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label="Guidance Scale (CFG)", |
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minimum=1.0, |
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maximum=5.0, |
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step=0.5, |
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value=2, |
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info="Controls adherence to the text prompt.", |
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) |
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STYLE_CHOICES = [ |
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"Make it Illustration style.", |
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"Make it a drawing by Van Gogh.", |
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"Make it a pencil sketch style.", |
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"Make it watercolor drawing style.", |
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"Make it a Pixel Art.", |
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"Make it a Japanese anime style, cel shading.", |
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"Make it the style of Neon Light Art.", |
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"Make it papercut style.", |
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"Make it a blueprint.", |
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"Make it Comic Book Style.", |
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"Render the subject as a classical sculpture carved from a single block of pristine white marble.", |
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] |
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EXAMPLE_INPUTS = [ |
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["assets/video_00000000.mp4", STYLE_CHOICES[0]], |
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["assets/video_00000007.mp4", STYLE_CHOICES[1]], |
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["assets/video_00000019.mp4", STYLE_CHOICES[2]], |
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["assets/video_00000071.mp4", STYLE_CHOICES[3]], |
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] |
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PRESET_MODES = { |
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"Fast": PresetConfig(shift_gamma=5.0, steps=6, guidance_scale=2), |
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"Balanced": PresetConfig(shift_gamma=5.0, steps=10, guidance_scale=2), |
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"Quality": PresetConfig(shift_gamma=5.0, steps=20, guidance_scale=2), |
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} |
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def _create_slider(config: SliderConfig) -> gr.Slider: |
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"""Helper to keep slider creation consistent.""" |
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return gr.Slider( |
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label=config.label, |
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minimum=config.minimum, |
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maximum=config.maximum, |
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step=config.step, |
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value=config.value, |
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info=config.info, |
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) |
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@spaces.GPU(duration=120) |
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def run_stylization( |
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input_video_path, |
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prompt, |
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shift_gamma, |
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steps, |
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guidance_scale, |
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seed, |
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randomize_seed, |
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): |
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"""Placeholder stylization pipeline that echoes the input video.""" |
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if not input_video_path: |
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return None |
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resolved_seed = _resolve_seed(seed, randomize_seed) |
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print("========== Inference Start ==========") |
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print(f"Video Path: {input_video_path}") |
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print(f"Prompt: {prompt}") |
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print( |
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"Params: " |
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f"Gamma={shift_gamma}, " |
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f"Steps={steps}, " |
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f"CFG={guidance_scale}, " |
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f"Seed={resolved_seed}" |
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) |
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source_video = load_video(input_video_path) |
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source_video = [each.resize((832, 480)) for each in source_video][:81] |
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if len(source_video) < 81: |
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source_video += [source_video[-1]] * (81 - len(source_video)) |
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source_fps = get_fps(input_video_path) |
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source_latents = encode_video(pipe, source_video) |
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pipe.scheduler.set_parameters( |
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noise_scale=1.0, shift_gamma=shift_gamma, seed=resolved_seed |
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) |
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output = pipe( |
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prompt=prompt, |
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num_inference_steps=steps, |
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guidance_scale=guidance_scale, |
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latents=source_latents, |
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).frames[0] |
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tmp_dir = tempfile.mkdtemp() |
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out_path = os.path.join(tmp_dir, f"{random.randint(0, 2**31 - 1)}.mp4") |
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export_to_video(output, out_path, fps=source_fps) |
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print(out_path) |
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return out_path |
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def _resolve_seed(seed_value, randomize): |
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"""Return an integer seed, generating a random one when requested or missing.""" |
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if randomize or seed_value in (None, ""): |
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return random.randint(0, 2**31 - 1) |
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return int(seed_value) |
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def run_with_preset(input_video_path, prompt, seed, randomize_seed, preset_key): |
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"""Wrap stylization with predefined presets for quick generation.""" |
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preset = PRESET_MODES[preset_key] |
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return run_stylization( |
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input_video_path=input_video_path, |
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prompt=prompt, |
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shift_gamma=preset.shift_gamma, |
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steps=preset.steps, |
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guidance_scale=preset.guidance_scale, |
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seed=seed, |
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randomize_seed=randomize_seed, |
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) |
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def _bind_preset_button(button, preset_key, inputs, output, extra_kwargs=None): |
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extra_kwargs = extra_kwargs or {} |
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button.click( |
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fn=functools.partial(run_with_preset, preset_key=preset_key, **extra_kwargs), |
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inputs=inputs, |
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outputs=[output], |
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) |
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def build_demo() -> gr.Blocks: |
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"""Create the Gradio interface for video stylization.""" |
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with gr.Blocks() as demo: |
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with gr.Column(elem_id="col-container"): |
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gr.HTML( |
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""" |
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<style> |
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#col-container { max-width: 1200px; margin: 0 auto; } |
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</style> |
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""" |
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) |
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gr.Markdown( |
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""" |
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# 🎥 ViBT: Vision Bridge Transformer at Scale |
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<div style="text-align: center; display: flex; justify-content: left; gap: 5px;"> |
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<a href="https://yuanshi9815.github.io/ViBT_homepage"><img src="https://img.shields.io/badge/Web-Project Page-1d72b8.svg" alt="Project Page"></a> |
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<a href="https://arxiv.org/abs/2511.23199"><img src="https://img.shields.io/badge/ariXv-Paper-A42C25.svg" alt="arXiv"></a> |
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<a href="https://huggingface.co/Yuanshi/ViBT"><img src="https://img.shields.io/badge/🤗Huggingface-Model-ffbd45.svg" alt="HuggingFace"></a> |
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<a href="https://github.com/Yuanshi9815/ViBT"><img src="https://img.shields.io/badge/GitHub-Code-blue.svg?logo=github&" alt="GitHub"></a> |
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</div> |
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""" |
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) |
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with gr.Row(): |
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with gr.Column(): |
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input_video = gr.Video(label="Source Video", sources=["upload"]) |
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with gr.Column(): |
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output_video = gr.Video(label="Stylized Result", interactive=False) |
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with gr.Row(): |
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with gr.Column(scale=1) as control_col: |
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prompt = gr.Dropdown( |
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label="Style Instruction", |
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choices=STYLE_CHOICES, |
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value=STYLE_CHOICES[0], |
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allow_custom_value=True, |
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) |
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with gr.Tabs(): |
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with gr.Tab("Quick Generate"): |
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with gr.Row(): |
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fast_btn = gr.Button( |
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"⚡ Fast", variant="primary" |
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) |
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balanced_btn = gr.Button( |
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"🎯 Balanced", variant="primary" |
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) |
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quality_btn = gr.Button( |
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"🌟 High Quality", variant="primary" |
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) |
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_bind_preset_button( |
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button=fast_btn, |
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preset_key="Fast", |
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inputs=[ |
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input_video, |
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prompt, |
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], |
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output=output_video, |
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extra_kwargs={"seed": None, "randomize_seed": True}, |
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) |
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_bind_preset_button( |
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button=balanced_btn, |
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preset_key="Balanced", |
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inputs=[ |
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input_video, |
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prompt, |
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], |
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output=output_video, |
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extra_kwargs={"seed": None, "randomize_seed": True}, |
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) |
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_bind_preset_button( |
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button=quality_btn, |
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preset_key="Quality", |
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inputs=[ |
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input_video, |
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prompt, |
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], |
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output=output_video, |
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extra_kwargs={"seed": None, "randomize_seed": True}, |
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) |
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with gr.Tab("Advanced Settings"): |
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with gr.Row(): |
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shift_gamma = _create_slider(GAMMA_SLIDER) |
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guidance_scale = _create_slider(GUIDANCE_SLIDER) |
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with gr.Row(): |
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num_steps = _create_slider(STEP_SLIDER) |
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randomize_seed_adv = gr.Checkbox( |
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label="Randomize Seed", |
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value=True, |
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info="Checked = new random seed each run. Uncheck to provide your own seed.", |
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) |
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seed_adv = gr.Number( |
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label="Seed (used when Randomize is off)", |
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value=42, |
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precision=0, |
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) |
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run_btn = gr.Button("Generate", variant="primary") |
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run_btn.click( |
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fn=run_stylization, |
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inputs=[ |
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input_video, |
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prompt, |
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shift_gamma, |
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num_steps, |
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guidance_scale, |
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seed_adv, |
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randomize_seed_adv, |
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], |
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outputs=[output_video], |
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) |
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with gr.Column(scale=1): |
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gr.Examples( |
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examples=EXAMPLE_INPUTS, |
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inputs=[input_video, prompt], |
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label="Example inputs", |
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) |
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return demo |
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demo = build_demo() |
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if __name__ == "__main__": |
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demo.launch() |
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