import os import sys sys.path.insert(0, os.path.dirname(os.path.abspath(__file__))) # wan2.2-main/gradio_ti2v.py import gradio as gr import torch from huggingface_hub import snapshot_download from PIL import Image import random import numpy as np import spaces import wan from wan.configs import WAN_CONFIGS, SIZE_CONFIGS, MAX_AREA_CONFIGS, SUPPORTED_SIZES from wan.utils.utils import cache_video import gc # --- 1. Global Setup and Model Loading --- print("Starting Gradio App for Wan 2.2 TI2V-5B...") # Download model snapshots from Hugging Face Hub repo_id = "Wan-AI/Wan2.2-TI2V-5B" print(f"Downloading/loading checkpoints for {repo_id}...") ckpt_dir = snapshot_download(repo_id, local_dir_use_symlinks=False) print(f"Using checkpoints from {ckpt_dir}") # Load the model configuration TASK_NAME = 'ti2v-5B' cfg = WAN_CONFIGS[TASK_NAME] FIXED_FPS = 24 MIN_FRAMES_MODEL = 8 MAX_FRAMES_MODEL = 121 # Dimension calculation constants MOD_VALUE = 32 DEFAULT_H_SLIDER_VALUE = 704 DEFAULT_W_SLIDER_VALUE = 1280 NEW_FORMULA_MAX_AREA = 1280.0 * 704.0 SLIDER_MIN_H, SLIDER_MAX_H = 128, 1280 SLIDER_MIN_W, SLIDER_MAX_W = 128, 1280 # Instantiate the pipeline in the global scope print("Initializing WanTI2V pipeline...") device = "cuda" if torch.cuda.is_available() else "cpu" device_id = 0 if torch.cuda.is_available() else -1 pipeline = wan.WanTI2V( config=cfg, checkpoint_dir=ckpt_dir, device_id=device_id, rank=0, t5_fsdp=False, dit_fsdp=False, use_sp=False, t5_cpu=False, init_on_cpu=False, convert_model_dtype=True, ) print("Pipeline initialized and ready.") # --- Helper Functions (from Wan 2.1 Fast demo) --- def _calculate_new_dimensions_wan(pil_image, mod_val, calculation_max_area, min_slider_h, max_slider_h, min_slider_w, max_slider_w, default_h, default_w): orig_w, orig_h = pil_image.size if orig_w <= 0 or orig_h <= 0: return default_h, default_w aspect_ratio = orig_h / orig_w calc_h = round(np.sqrt(calculation_max_area * aspect_ratio)) calc_w = round(np.sqrt(calculation_max_area / aspect_ratio)) calc_h = max(mod_val, (calc_h // mod_val) * mod_val) calc_w = max(mod_val, (calc_w // mod_val) * mod_val) new_h = int(np.clip(calc_h, min_slider_h, (max_slider_h // mod_val) * mod_val)) new_w = int(np.clip(calc_w, min_slider_w, (max_slider_w // mod_val) * mod_val)) return new_h, new_w def handle_image_upload_for_dims_wan(uploaded_pil_image, current_h_val, current_w_val): """ Handle image upload and calculate appropriate dimensions for video generation. Args: uploaded_pil_image: The uploaded image (PIL Image or numpy array) current_h_val: Current height slider value current_w_val: Current width slider value Returns: Tuple of gr.update objects for height and width sliders """ if uploaded_pil_image is None: return gr.update(value=DEFAULT_H_SLIDER_VALUE), gr.update(value=DEFAULT_W_SLIDER_VALUE) try: # Convert numpy array to PIL Image if needed if hasattr(uploaded_pil_image, 'shape'): # numpy array pil_image = Image.fromarray(uploaded_pil_image).convert("RGB") else: # already PIL Image pil_image = uploaded_pil_image new_h, new_w = _calculate_new_dimensions_wan( pil_image, MOD_VALUE, NEW_FORMULA_MAX_AREA, SLIDER_MIN_H, SLIDER_MAX_H, SLIDER_MIN_W, SLIDER_MAX_W, DEFAULT_H_SLIDER_VALUE, DEFAULT_W_SLIDER_VALUE ) return gr.update(value=new_h), gr.update(value=new_w) except Exception as e: gr.Warning("Error attempting to calculate new dimensions") return gr.update(value=DEFAULT_H_SLIDER_VALUE), gr.update(value=DEFAULT_W_SLIDER_VALUE) def get_duration(image, prompt, height, width, duration_seconds, sampling_steps, guide_scale, shift, seed, progress): """Calculate dynamic GPU duration based on parameters.""" if duration_seconds >= 3: return 220 elif sampling_steps > 35 and duration_seconds >= 2: return 180 elif sampling_steps < 35 or duration_seconds < 2: return 105 else: return 90 # --- 2. Gradio Inference Function --- @spaces.GPU(duration=get_duration) def generate_video( image, prompt, height, width, duration_seconds, sampling_steps=38, guide_scale=cfg.sample_guide_scale, shift=cfg.sample_shift, seed=42, progress=gr.Progress(track_tqdm=True) ): """ Generate a video from text prompt and optional image using the Wan 2.2 TI2V model. Args: image: Optional input image (numpy array) for image-to-video generation prompt: Text prompt describing the desired video height: Target video height in pixels width: Target video width in pixels duration_seconds: Desired video duration in seconds sampling_steps: Number of denoising steps for video generation guide_scale: Guidance scale for classifier-free guidance shift: Sample shift parameter for the model seed: Random seed for reproducibility (-1 for random) progress: Gradio progress tracker Returns: Path to the generated video file """ if seed == -1: seed = random.randint(0, sys.maxsize) # Ensure dimensions are multiples of MOD_VALUE target_h = max(MOD_VALUE, (int(height) // MOD_VALUE) * MOD_VALUE) target_w = max(MOD_VALUE, (int(width) // MOD_VALUE) * MOD_VALUE) input_image = None if image is not None: input_image = Image.fromarray(image).convert("RGB") # Resize image to match target dimensions input_image = input_image.resize((target_w, target_h)) # Calculate number of frames based on duration num_frames = np.clip(int(round(duration_seconds * FIXED_FPS)), MIN_FRAMES_MODEL, MAX_FRAMES_MODEL) # Create size string for the pipeline size_str = f"{target_h}*{target_w}" video_tensor = pipeline.generate( input_prompt=prompt, img=input_image, # Pass None for T2V, Image for I2V size=SIZE_CONFIGS.get(size_str, (target_h, target_w)), max_area=MAX_AREA_CONFIGS.get(size_str, target_h * target_w), frame_num=num_frames, # Use calculated frames instead of cfg.frame_num shift=shift, sample_solver='unipc', sampling_steps=int(sampling_steps), guide_scale=guide_scale, seed=seed, offload_model=True ) # Save the video to a temporary file video_path = cache_video( tensor=video_tensor[None], # Add a batch dimension save_file=None, # cache_video will create a temp file fps=cfg.sample_fps, normalize=True, value_range=(-1, 1) ) del video_tensor gc.collect() return video_path # --- 3. Gradio Interface --- css = ".gradio-container {max-width: 1100px !important; margin: 0 auto} #output_video {height: 500px;} #input_image {height: 500px;}" with gr.Blocks(css=css, theme=gr.themes.Soft(), delete_cache=(60, 900)) as demo: gr.Markdown("# Wan 2.2 TI2V 5B") gr.Markdown("generate high quality videos using **Wan 2.2 5B Text-Image-to-Video model**,[[model]](https://huggingface.co/Wan-AI/Wan2.2-TI2V-5B),[[paper]](https://arxiv.org/abs/2503.20314)") with gr.Row(): with gr.Column(scale=2): image_input = gr.Image(type="numpy", label="Optional (blank = text-to-image)", elem_id="input_image") prompt_input = gr.Textbox(label="Prompt", value="A beautiful waterfall in a lush jungle, cinematic.", lines=3) duration_input = gr.Slider( minimum=round(MIN_FRAMES_MODEL/FIXED_FPS, 1), maximum=round(MAX_FRAMES_MODEL/FIXED_FPS, 1), step=0.1, value=2.0, label="Duration (seconds)", info=f"Clamped to model's {MIN_FRAMES_MODEL}-{MAX_FRAMES_MODEL} frames at {FIXED_FPS}fps." ) with gr.Accordion("Advanced Settings", open=False): with gr.Row(): height_input = gr.Slider(minimum=SLIDER_MIN_H, maximum=SLIDER_MAX_H, step=MOD_VALUE, value=DEFAULT_H_SLIDER_VALUE, label=f"Output Height (multiple of {MOD_VALUE})") width_input = gr.Slider(minimum=SLIDER_MIN_W, maximum=SLIDER_MAX_W, step=MOD_VALUE, value=DEFAULT_W_SLIDER_VALUE, label=f"Output Width (multiple of {MOD_VALUE})") steps_input = gr.Slider(label="Sampling Steps", minimum=10, maximum=50, value=38, step=1) scale_input = gr.Slider(label="Guidance Scale", minimum=1.0, maximum=10.0, value=cfg.sample_guide_scale, step=0.1) shift_input = gr.Slider(label="Sample Shift", minimum=1.0, maximum=20.0, value=cfg.sample_shift, step=0.1) seed_input = gr.Number(label="Seed (-1 for random)", value=-1, precision=0) with gr.Column(scale=2): video_output = gr.Video(label="Generated Video", elem_id="output_video") run_button = gr.Button("Generate Video", variant="primary") # Add image upload handler image_input.upload( fn=handle_image_upload_for_dims_wan, inputs=[image_input, height_input, width_input], outputs=[height_input, width_input] ) image_input.clear( fn=handle_image_upload_for_dims_wan, inputs=[image_input, height_input, width_input], outputs=[height_input, width_input] ) example_image_path = os.path.join(os.path.dirname(__file__), "examples/i2v_input.JPG") gr.Examples( examples=[ [example_image_path, "The cat removes the glasses from its eyes.", 1088, 800, 1.5], [None, "A cinematic shot of a boat sailing on a calm sea at sunset.", 704, 1280, 2.0], [None, "Drone footage flying over a futuristic city with flying cars.", 704, 1280, 2.0], ], inputs=[image_input, prompt_input, height_input, width_input, duration_input], outputs=video_output, fn=generate_video, cache_examples="lazy", ) run_button.click( fn=generate_video, inputs=[image_input, prompt_input, height_input, width_input, duration_input, steps_input, scale_input, shift_input, seed_input], outputs=video_output ) if __name__ == "__main__": demo.launch(mcp_server=True)