Create app1.py

app1.py

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+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)