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..
Author SHA1 Message Date
JerryZhou54 fbc0543aa8 Each rank should sample a different timestep in dmd_forward and faker_score_forward 2025-11-18 20:11:22 +00:00
JerryZhou54 94cb9f8880 Change to fp32 inference 2025-11-18 20:11:21 +00:00
JerryZhou54 e181dad528 Add i2v images 2025-11-18 20:11:21 +00:00
JerryZhou54 81dce215c3 Fi lint 2025-11-18 20:11:21 +00:00
RandNMR73 2b22c162be Add inference for MoE SF 2025-11-18 20:11:21 +00:00
28 changed files with 346 additions and 663 deletions
-1
View File
@@ -10,7 +10,6 @@ exclude: |
demo/.*|
predict\.py|
scripts/.*|
prompts/.*|
fastvideo/data_preprocess/.*|
fastvideo/dataset/.*|
fastvideo/models/.*|
-1
View File
@@ -15,7 +15,6 @@ FastVideo features an end-to-end unified pipeline for accelerating diffusion mod
</div>
## NEWS
- ```2025/11/19```: Release [CausalWan2.2 I2V A14B Preview](https://huggingface.co/FastVideo/CausalWan2.2-I2V-A14B-Preview-Diffusers) models, [Blog](https://hao-ai-lab.github.io/blogs/fastvideo_causalwan_preview/) and [Inference Code!](https://github.com/hao-ai-lab/FastVideo/blob/main/examples/inference/basic/basic_self_forcing_causal_wan2_2_i2v.py)
- ```2025/08/04```: Release [FastWan](https://hao-ai-lab.github.io/FastVideo/distillation/dmd.html) models and [Sparse-Distillation](https://hao-ai-lab.github.io/blogs/fastvideo_post_training/).
- ```2025/06/14```: Release finetuning and inference code for [VSA](https://arxiv.org/pdf/2505.13389)
- ```2025/04/24```: [FastVideo V1](https://hao-ai-lab.github.io/blogs/fastvideo/) is released!
@@ -11,7 +11,7 @@ def main():
# If a local path is provided, FastVideo will make a best effort
# attempt to identify the optimal arguments.
generator = VideoGenerator.from_pretrained(
"FastVideo/SFWan2.2-I2V-A14B-Preview-Diffusers",
"rand0nmr/SFWan2.2-T2V-A14B-Diffusers",
# FastVideo will automatically handle distributed setup
num_gpus=1,
use_fsdp_inference=True,
@@ -22,11 +22,13 @@ def main():
dmd_denoising_steps=[1000, 850, 700, 550, 350, 275, 200, 125],
# Set pin_cpu_memory to false if CPU RAM is limited and there're no frequent CPU-GPU transfer
pin_cpu_memory=True,
init_weights_from_safetensors="/mnt/sharefs/users/hao.zhang/wei/SFwan2.2_distill_self_forcing_release_x0_CacheAppend_1333/checkpoint-442_weight_only/ema/generator_ema.safetensors",
init_weights_from_safetensors_2="/mnt/sharefs/users/hao.zhang/wei/SFwan2.2_distill_self_forcing_release_x0_CacheAppend_1333/checkpoint-442_weight_only/ema/generator_ema_2.safetensors",
# image_encoder_cpu_offload=False,
)
sampling_param = SamplingParam.from_pretrained("FastVideo/SFWan2.2-I2V-A14B-Preview-Diffusers")
sampling_param.num_frames = 81
sampling_param = SamplingParam.from_pretrained("rand0nmr/SFWan2.2-T2V-A14B-Diffusers")
sampling_param.num_frames = 73
sampling_param.width = 832
sampling_param.height = 480
sampling_param.seed = 1000
@@ -41,4 +43,4 @@ def main():
if __name__ == "__main__":
main()
main()
@@ -3,9 +3,6 @@ import os
import requests
import base64
import time
import json
from pathlib import Path
import tempfile
import gradio as gr
@@ -15,7 +12,6 @@ from fastvideo.configs.sample.base import SamplingParam
MODEL_PATH_MAPPING = {
"FastWan2.1-T2V-1.3B": "FastVideo/FastWan2.1-T2V-1.3B-Diffusers",
"FastWan2.2-TI2V-5B-FullAttn": "FastVideo/FastWan2.2-TI2V-5B-FullAttn-Diffusers",
"CausalWan2.2-I2V-A14B-Preview": "FastVideo/SFWan2.2-I2V-A14B-Preview-Diffusers",
}
@@ -41,7 +37,7 @@ class RayServeClient:
f"{self.backend_url}/generate_video",
json=request_data,
headers=headers,
timeout=900 # 15 minutes timeout for longer video generation
timeout=300
)
round_trip_time = time.time() - start_time
@@ -85,78 +81,49 @@ def save_video_from_base64(video_data: str, output_dir: str, prompt: str) -> str
return None
def encode_image_to_base64(image_path: str) -> str:
"""Encode an image file to base64 string."""
if not image_path or not os.path.exists(image_path):
return None
def create_timing_display(inference_time, encoding_time, network_time, total_time, stage_execution_times, num_frames):
dit_denoising_time = f"{stage_execution_times[5]:.2f}s" if len(stage_execution_times) > 5 else "N/A"
try:
with open(image_path, 'rb') as f:
image_bytes = f.read()
image_base64 = base64.b64encode(image_bytes).decode('utf-8')
# Determine image type from extension
ext = os.path.splitext(image_path)[1].lower()
mime_types = {
'.jpg': 'image/jpeg',
'.jpeg': 'image/jpeg',
'.png': 'image/png',
'.gif': 'image/gif',
'.webp': 'image/webp',
}
mime_type = mime_types.get(ext, 'image/jpeg')
return f"data:{mime_type};base64,{image_base64}"
except Exception as e:
print(f"Failed to encode image: {e}")
return None
# def create_timing_display(inference_time, encoding_time, network_time, total_time, stage_execution_times, num_frames):
# dit_denoising_time = f"{stage_execution_times[5]:.2f}s" if len(stage_execution_times) > 5 else "N/A"
#
# timing_html = f"""
# <div style="margin: 10px 0;">
# <h3 style="text-align: center; margin-bottom: 10px;">⏱️ Timing Breakdown</h3>
# <div style="display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-bottom: 10px;">
# <div class="timing-card timing-card-highlight">
# <div style="font-size: 20px;">🚀</div>
# <div style="font-weight: bold; margin: 3px 0; font-size: 14px;">DiT Denoising</div>
# <div style="font-size: 16px; color: #ffa200; font-weight: bold;">{dit_denoising_time}</div>
# </div>
# <div class="timing-card">
# <div style="font-size: 20px;">🧠</div>
# <div style="font-weight: bold; margin: 3px 0; font-size: 14px;">E2E (w. vae/text encoder)</div>
# <div style="font-size: 16px; color: #2563eb;">{inference_time:.2f}s</div>
# </div>
# <div class="timing-card">
# <div style="font-size: 20px;">🎬</div>
# <div style="font-weight: bold; margin: 3px 0; font-size: 14px;">Video Encoding</div>
# <div style="font-size: 16px; color: #dc2626;">{encoding_time:.2f}s</div>
# </div>
# <div class="timing-card">
# <div style="font-size: 20px;">🌐</div>
# <div style="font-weight: bold; margin: 3px 0; font-size: 14px;">Network Transfer</div>
# <div style="font-size: 16px; color: #059669;">{network_time:.2f}s</div>
# </div>
# <div class="timing-card">
# <div style="font-size: 20px;">📊</div>
# <div style="font-weight: bold; margin: 3px 0; font-size: 14px;">Total Processing</div>
# <div style="font-size: 18px; color: #0277bd;">{total_time:.2f}s</div>
# </div>
# </div>"""
#
# if inference_time > 0:
# fps = num_frames / inference_time
# timing_html += f"""
# <div class="performance-card" style="margin-top: 15px;">
# <span style="font-weight: bold;">Generation Speed: </span>
# <span style="font-size: 18px; color: #6366f1; font-weight: bold;">{fps:.1f} frames/second</span>
# </div>"""
#
# return timing_html + "</div>"
timing_html = f"""
<div style="margin: 10px 0;">
<h3 style="text-align: center; margin-bottom: 10px;">⏱️ Timing Breakdown</h3>
<div style="display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-bottom: 10px;">
<div class="timing-card timing-card-highlight">
<div style="font-size: 20px;">🚀</div>
<div style="font-weight: bold; margin: 3px 0; font-size: 14px;">DiT Denoising</div>
<div style="font-size: 16px; color: #ffa200; font-weight: bold;">{dit_denoising_time}</div>
</div>
<div class="timing-card">
<div style="font-size: 20px;">🧠</div>
<div style="font-weight: bold; margin: 3px 0; font-size: 14px;">E2E (w. vae/text encoder)</div>
<div style="font-size: 16px; color: #2563eb;">{inference_time:.2f}s</div>
</div>
<div class="timing-card">
<div style="font-size: 20px;">🎬</div>
<div style="font-weight: bold; margin: 3px 0; font-size: 14px;">Video Encoding</div>
<div style="font-size: 16px; color: #dc2626;">{encoding_time:.2f}s</div>
</div>
<div class="timing-card">
<div style="font-size: 20px;">🌐</div>
<div style="font-weight: bold; margin: 3px 0; font-size: 14px;">Network Transfer</div>
<div style="font-size: 16px; color: #059669;">{network_time:.2f}s</div>
</div>
<div class="timing-card">
<div style="font-size: 20px;">📊</div>
<div style="font-weight: bold; margin: 3px 0; font-size: 14px;">Total Processing</div>
<div style="font-size: 18px; color: #0277bd;">{total_time:.2f}s</div>
</div>
</div>"""
if inference_time > 0:
fps = num_frames / inference_time
timing_html += f"""
<div class="performance-card" style="margin-top: 15px;">
<span style="font-weight: bold;">Generation Speed: </span>
<span style="font-size: 18px; color: #6366f1; font-weight: bold;">{fps:.1f} frames/second</span>
</div>"""
return timing_html + "</div>"
def load_example_prompts():
@@ -177,83 +144,26 @@ def load_example_prompts():
print(f"Warning: Could not read {filepath}: {e}")
return prompts, labels
# Load prompts from prompts.txt
examples, example_labels = load_from_file("examples/inference/gradio/serving/prompts.txt")
examples, example_labels = load_from_file("prompts/prompts_final.txt")
if not examples:
examples = ["A crowded rooftop bar buzzes with energy, the city skyline twinkling like a field of stars in the background."]
example_labels = ["Crowded rooftop bar at night"]
# Load image mappings from JSON file
prompt_to_image = {}
# Try to find the JSON file relative to project root
possible_json_paths = [
Path("prompts/mixkit_i2v.jsonl"),
Path(__file__).parent.parent.parent.parent / "prompts" / "mixkit_i2v.jsonl",
]
json_path = None
for path in possible_json_paths:
if path.exists():
json_path = path
break
if json_path and json_path.exists():
try:
with open(json_path, "r", encoding='utf-8') as f:
data = json.load(f)
# Get the project root directory (parent of prompts directory)
project_root = json_path.parent.parent
for item in data:
prompt_text = item.get("prompt", "").strip()
image_path = item.get("image_path", "")
if prompt_text and image_path:
# Resolve image path relative to project root
full_image_path = project_root / image_path
if full_image_path.exists():
prompt_to_image[prompt_text] = str(full_image_path.absolute())
except Exception as e:
print(f"Warning: Could not load image mappings from {json_path}: {e}")
# Create image paths list matching the prompts
example_images = []
for prompt in examples:
# Try exact match first
image_path = prompt_to_image.get(prompt)
if not image_path:
# Try fuzzy match (case-insensitive, whitespace normalized)
normalized_prompt = " ".join(prompt.split())
for json_prompt, img_path in prompt_to_image.items():
normalized_json = " ".join(json_prompt.split())
if normalized_prompt.lower() == normalized_json.lower():
image_path = img_path
break
example_images.append(image_path if image_path and os.path.exists(image_path) else None)
return examples, example_labels, example_images
return examples, example_labels
def create_gradio_interface(backend_url: str, default_params: dict[str, SamplingParam]):
client = RayServeClient(backend_url)
def is_i2v_model(model_name: str) -> bool:
"""Check if the model is an I2V model."""
return "I2V" in model_name
def generate_video(
prompt, negative_prompt, use_negative_prompt, guidance_scale,
num_frames, height, width, model_selection, input_image, progress
prompt, negative_prompt, use_negative_prompt, seed, guidance_scale,
num_frames, height, width, randomize_seed, model_selection, progress
):
# Use default seed value (randomize_seed disabled)
seed = 1000
randomize_seed = False
if not client.check_health():
return None, f"Backend is not available. Please check if Ray Serve is running at {backend_url}", ""
# Check if I2V model requires an image
if is_i2v_model(model_selection) and not input_image:
return None, "I2V models require an input image. Please upload an image.", ""
# Validate dimensions
max_pixels = 720 * 1280
if height * width > max_pixels:
@@ -262,15 +172,6 @@ def create_gradio_interface(backend_url: str, default_params: dict[str, Sampling
if progress:
progress(0.1, desc="Checking backend health...")
# Encode image if provided
image_data = None
if input_image:
if progress:
progress(0.2, desc="Encoding input image...")
image_data = encode_image_to_base64(input_image)
if not image_data:
return None, "Failed to encode input image", ""
request_data = {
"prompt": prompt,
"negative_prompt": negative_prompt,
@@ -282,7 +183,7 @@ def create_gradio_interface(backend_url: str, default_params: dict[str, Sampling
"width": width,
"randomize_seed": randomize_seed,
"return_frames": False,
"image_data": image_data,
"image_path": None,
"model_path": MODEL_PATH_MAPPING.get(model_selection, "FastVideo/FastWan2.1-T2V-1.3B-Diffusers")
}
@@ -297,16 +198,16 @@ def create_gradio_interface(backend_url: str, default_params: dict[str, Sampling
if response.get("success", False):
video_data = response.get("video_data", "")
used_seed = response.get("seed", seed)
# inference_time = response.get("inference_time", 0.0)
# encoding_time = response.get("encoding_time", 0.0)
# total_time = response.get("total_time", 0.0)
# network_time = response.get("network_time", 0.0)
# stage_execution_times = response.get("stage_execution_times", [])
inference_time = response.get("inference_time", 0.0)
encoding_time = response.get("encoding_time", 0.0)
total_time = response.get("total_time", 0.0)
network_time = response.get("network_time", 0.0)
stage_execution_times = response.get("stage_execution_times", [])
# timing_details = create_timing_display(
# inference_time, encoding_time, network_time, total_time,
# stage_execution_times, num_frames
# )
timing_details = create_timing_display(
inference_time, encoding_time, network_time, total_time,
stage_execution_times, num_frames
)
if video_data:
if progress:
@@ -318,7 +219,7 @@ def create_gradio_interface(backend_url: str, default_params: dict[str, Sampling
progress(1.0, desc="Generation complete!")
if video_path and os.path.exists(video_path):
return video_path, used_seed, ""
return video_path, used_seed, timing_details
else:
return None, "Failed to save video", ""
else:
@@ -327,7 +228,7 @@ def create_gradio_interface(backend_url: str, default_params: dict[str, Sampling
error_msg = response.get("error_message", "Unknown error occurred")
return None, f"Generation failed: {error_msg}", ""
examples, example_labels, example_images = load_example_prompts()
examples, example_labels = load_example_prompts()
theme = gr.themes.Base().set(
button_primary_background_fill="#2563eb",
@@ -338,39 +239,33 @@ def create_gradio_interface(backend_url: str, default_params: dict[str, Sampling
)
def get_default_values(model_name):
# model_path = MODEL_PATH_MAPPING.get(model_name)
# if model_path and model_path in default_params:
# params = default_params[model_path]
# return {
# 'height': params.height,
# 'width': params.width,
# 'num_frames': params.num_frames,
# 'guidance_scale': params.guidance_scale,
# }
model_path = MODEL_PATH_MAPPING.get(model_name)
if model_path and model_path in default_params:
params = default_params[model_path]
return {
'height': params.height,
'width': params.width,
'num_frames': params.num_frames,
'guidance_scale': params.guidance_scale,
'seed': params.seed,
}
return {
'height': 480,
'height': 448,
'width': 832,
'num_frames': 73,
'num_frames': 61,
'guidance_scale': 3.0,
'seed': 1024,
}
# Get available models based on what's loaded
available_models = []
for model_name, model_path in MODEL_PATH_MAPPING.items():
if model_path in default_params:
available_models.append(model_name)
initial_values = get_default_values("FastWan2.1-T2V-1.3B")
# Select first available model as default
default_model = available_models[0] if available_models else "FastWan2.1-T2V-1.3B"
initial_values = get_default_values(default_model)
initial_show_image = is_i2v_model(default_model)
with gr.Blocks(title="CausalWan", theme=theme) as demo:
with gr.Blocks(title="FastWan", theme=theme) as demo:
gr.Image("assets/logos/logo.svg", show_label=False, container=False, height=80)
gr.HTML("""
<div style="text-align: center; margin-bottom: 10px;">
<p style="font-size: 18px;"> Make Video Generation Go Blurrrrrrr </p>
<p style="font-size: 18px;"> <a href="https://github.com/hao-ai-lab/FastVideo/tree/main" target="_blank">Code</a> | <a href="https://hao-ai-lab.github.io/blogs/fastvideo_causalwan_preview/" target="_blank">Blog</a> | <a href="https://hao-ai-lab.github.io/FastVideo/" target="_blank">Docs</a> </p>
<p style="font-size: 18px;"> <a href="https://github.com/hao-ai-lab/FastVideo/tree/main" target="_blank">Code</a> | <a href="https://hao-ai-lab.github.io/blogs/fastvideo_post_training/" target="_blank">Blog</a> | <a href="https://hao-ai-lab.github.io/FastVideo/" target="_blank">Docs</a> </p>
</div>
""")
@@ -385,8 +280,8 @@ def create_gradio_interface(backend_url: str, default_params: dict[str, Sampling
with gr.Row():
model_selection = gr.Dropdown(
choices=available_models,
value=default_model,
choices=list(MODEL_PATH_MAPPING.keys()),
value="FastWan2.1-T2V-1.3B",
label="Select Model",
interactive=True
)
@@ -417,70 +312,69 @@ def create_gradio_interface(backend_url: str, default_params: dict[str, Sampling
with gr.Row():
with gr.Column():
error_output = gr.Text(label="Error", visible=False)
# timing_display = gr.Markdown(label="Timing Breakdown", visible=False)
timing_display = gr.Markdown(label="Timing Breakdown", visible=False)
with gr.Row(equal_height=False):
with gr.Column(scale=1):
with gr.Tabs():
with gr.Tab("Input Image", visible=initial_show_image) as image_tab:
gr.Markdown("**Please make sure you upload a 480x832 image**")
input_image = gr.Image(
label="",
type="filepath",
height=400,
with gr.Row(equal_height=True, elem_classes="main-content-row"):
with gr.Column(scale=1, elem_classes="advanced-options-column"):
with gr.Group():
gr.HTML("<div style='margin: 0 0 15px 0; text-align: center; font-size: 16px;'>Advanced Options</div>")
with gr.Row():
height = gr.Number(
label="Height",
value=initial_values['height'],
interactive=False,
container=True
)
width = gr.Number(
label="Width",
value=initial_values['width'],
interactive=False,
container=True
)
with gr.Tab("Advanced Options"):
with gr.Group():
with gr.Row():
height = gr.Number(
label="Height",
value=initial_values['height'],
interactive=False,
container=True
)
width = gr.Number(
label="Width",
value=initial_values['width'],
interactive=False,
container=True
)
with gr.Row():
num_frames = gr.Number(
label="Number of Frames",
value=initial_values['num_frames'],
interactive=False,
container=True
)
guidance_scale = gr.Number(
label="Guidance Scale",
value=1.0,
interactive=False,
container=True
)
with gr.Row():
use_negative_prompt = gr.Checkbox(
label="Use negative prompt", value=False)
negative_prompt = gr.Text(
label="Negative prompt",
max_lines=3,
lines=3,
placeholder="Enter a negative prompt",
visible=False,
)
with gr.Row():
num_frames = gr.Number(
label="Number of Frames",
value=initial_values['num_frames'],
interactive=False,
container=True
)
guidance_scale = gr.Slider(
label="Guidance Scale",
minimum=1,
maximum=12,
value=initial_values['guidance_scale'],
)
with gr.Row():
use_negative_prompt = gr.Checkbox(
label="Use negative prompt", value=False)
negative_prompt = gr.Text(
label="Negative prompt",
max_lines=3,
lines=3,
placeholder="Enter a negative prompt",
visible=False,
)
# randomize_seed = gr.Checkbox(label="Randomize seed", value=False)
seed_output = gr.Number(label="Used Seed", value=1000)
seed = gr.Slider(
label="Seed",
minimum=0,
maximum=1000000,
step=1,
value=initial_values['seed'],
)
randomize_seed = gr.Checkbox(label="Randomize seed", value=False)
seed_output = gr.Number(label="Used Seed")
with gr.Column(scale=1):
with gr.Column(scale=1, elem_classes="video-column"):
result = gr.Video(
label="Generated Video",
show_label=True,
height=500,
height=466,
width=600,
container=True,
autoplay=True,
elem_classes="video-component"
)
gr.HTML("""
@@ -493,10 +387,116 @@ def create_gradio_interface(backend_url: str, default_params: dict[str, Sampling
}
.gradio-container {
max-width: 1400px !important;
max-width: 1200px !important;
margin: 0 auto !important;
}
.main {
max-width: 1200px !important;
margin: 0 auto !important;
}
.gr-form, .gr-box, .gr-group {
max-width: 1200px !important;
}
.gr-video {
max-width: 500px !important;
margin: 0 auto !important;
}
.main-content-row {
display: flex !important;
align-items: flex-start !important;
min-height: 500px !important;
gap: 20px !important;
}
.advanced-options-column,
.video-column {
display: flex !important;
flex-direction: column !important;
flex: 1 !important;
min-height: 400px !important;
align-items: stretch !important;
}
.video-column > * {
margin-top: 0 !important;
}
.video-column .gr-video,
.video-component {
margin-top: 0 !important;
padding-top: 0 !important;
}
.video-column .gr-video .gr-form {
margin-top: 0 !important;
}
.advanced-options-column .gr-group,
.video-column .gr-video {
margin-top: 0 !important;
vertical-align: top !important;
}
.advanced-options-column > *:last-child,
.video-column > *:last-child {
flex-grow: 0 !important;
}
@media (max-width: 1400px) {
.main-content-row {
min-height: 600px !important;
}
.advanced-options-column,
.video-column {
min-height: 600px !important;
}
}
@media (max-width: 1200px) {
.main-content-row {
flex-direction: column !important;
align-items: stretch !important;
}
.advanced-options-column,
.video-column {
min-height: auto !important;
width: 100% !important;
}
}
.timing-card {
background: var(--background-fill-secondary) !important;
border: 1px solid var(--border-color-primary) !important;
color: var(--body-text-color) !important;
padding: 10px;
border-radius: 8px;
text-align: center;
min-height: 80px;
display: flex;
flex-direction: column;
justify-content: center;
}
.timing-card-highlight {
background: var(--background-fill-primary) !important;
border: 2px solid var(--color-accent) !important;
}
.performance-card {
background: var(--background-fill-secondary) !important;
border: 1px solid var(--border-color-primary) !important;
color: var(--body-text-color) !important;
padding: 10px;
border-radius: 6px;
text-align: center;
}
.gr-number input[readonly] {
background-color: var(--background-fill-secondary) !important;
border: 1px solid var(--border-color-primary) !important;
@@ -511,20 +511,18 @@ def create_gradio_interface(backend_url: str, default_params: dict[str, Sampling
def on_example_select(example_label):
if example_label and example_label in example_labels:
index = example_labels.index(example_label)
selected_prompt = examples[index]
selected_image = example_images[index] if index < len(example_images) else None
return selected_prompt, selected_image
return "", None
return examples[index]
return ""
example_dropdown.change(
fn=on_example_select,
inputs=example_dropdown,
outputs=[prompt, input_image],
outputs=prompt,
)
gr.HTML("""
<div style="text-align: center; margin-top: 10px; margin-bottom: 15px;">
<p style="font-size: 16px; margin: 0;">The compute for this demo is generously provided by <a href="https://www.gmicloud.ai/" target="_blank">GMI Cloud</a>. Note that this demo is meant as a preview of our distilled I2V model. Outside of few-step distillation, we have not yet fully optimized it for speed. Stay tuned for updates!</p>
<p style="font-size: 16px; margin: 0;">The compute for this demo is generously provided by <a href="https://www.gmicloud.ai/" target="_blank">GMI Cloud</a>. Note that this demo is meant to showcase FastWan's quality and that under a large number of requests, generation speed may be affected. We are also rate-limiting users to 3 requests per minute.</p>
</div>
""")
@@ -539,7 +537,6 @@ def create_gradio_interface(backend_url: str, default_params: dict[str, Sampling
selected_model = "FastWan2.1-T2V-1.3B"
model_path = MODEL_PATH_MAPPING.get(selected_model)
show_image_input = is_i2v_model(selected_model)
if model_path and model_path in default_params:
params = default_params[model_path]
@@ -548,29 +545,29 @@ def create_gradio_interface(backend_url: str, default_params: dict[str, Sampling
gr.update(value=params.width),
gr.update(value=params.num_frames),
gr.update(value=params.guidance_scale),
gr.update(visible=show_image_input),
gr.update(value=params.seed),
)
return (
gr.update(value=448),
gr.update(value=832),
gr.update(value=20),
gr.update(value=61),
gr.update(value=3.0),
gr.update(visible=show_image_input),
gr.update(value=1024),
)
model_selection.change(
fn=on_model_selection_change,
inputs=model_selection,
outputs=[height, width, num_frames, guidance_scale, image_tab],
outputs=[height, width, num_frames, guidance_scale, seed],
)
def handle_generation(*args, progress=None, request: gr.Request = None):
model_selection, prompt, negative_prompt, use_negative_prompt, guidance_scale, num_frames, height, width, input_image = args
model_selection, prompt, negative_prompt, use_negative_prompt, seed, guidance_scale, num_frames, height, width, randomize_seed = args
result_path, seed_or_error, _ = generate_video(
prompt, negative_prompt, use_negative_prompt, guidance_scale,
num_frames, height, width, model_selection, input_image, progress
result_path, seed_or_error, timing_details = generate_video(
prompt, negative_prompt, use_negative_prompt, seed, guidance_scale,
num_frames, height, width, randomize_seed, model_selection, progress
)
if result_path and os.path.exists(result_path):
@@ -578,12 +575,14 @@ def create_gradio_interface(backend_url: str, default_params: dict[str, Sampling
result_path,
seed_or_error,
gr.update(visible=False),
gr.update(visible=True, value=timing_details),
)
else:
return (
None,
seed_or_error,
gr.update(visible=True, value=seed_or_error),
gr.update(visible=False),
)
run_button.click(
@@ -593,14 +592,14 @@ def create_gradio_interface(backend_url: str, default_params: dict[str, Sampling
prompt,
negative_prompt,
use_negative_prompt,
seed,
guidance_scale,
num_frames,
height,
width,
# randomize_seed,
input_image,
randomize_seed,
],
outputs=[result, seed_output, error_output], # timing_display removed
outputs=[result, seed_output, error_output, timing_display],
concurrency_limit=20,
)
@@ -612,11 +611,8 @@ def main():
parser.add_argument("--backend_url", type=str, default="http://localhost:8000",
help="URL of the Ray Serve backend")
parser.add_argument("--t2v_model_paths", type=str,
default="",
default="FastVideo/FastWan2.1-T2V-1.3B-Diffusers,FastVideo/FastWan2.1-T2V-14B-Diffusers",
help="Comma separated list of paths to the T2V model(s)")
parser.add_argument("--i2v_model_paths", type=str,
default="FastVideo/SFWan2.2-I2V-A14B-Preview-Diffusers",
help="Comma separated list of paths to the I2V model(s)")
parser.add_argument("--host", type=str, default="0.0.0.0",
help="Host to bind to")
parser.add_argument("--port", type=int, default=7860,
@@ -625,15 +621,8 @@ def main():
args = parser.parse_args()
default_params = {}
# Load T2V model params
t2v_paths = [p.strip() for p in args.t2v_model_paths.split(",") if p.strip()]
for model_path in t2v_paths:
default_params[model_path] = SamplingParam.from_pretrained(model_path)
# Load I2V model params
i2v_paths = [p.strip() for p in args.i2v_model_paths.split(",") if p.strip()]
for model_path in i2v_paths:
model_paths = args.t2v_model_paths.split(",")
for model_path in model_paths:
default_params[model_path] = SamplingParam.from_pretrained(model_path)
demo = create_gradio_interface(args.backend_url, default_params)
@@ -641,8 +630,6 @@ def main():
print(f"Starting Gradio frontend at http://{args.host}:{args.port}")
print(f"Backend URL: {args.backend_url}")
print(f"T2V Models: {args.t2v_model_paths}")
if args.i2v_model_paths:
print(f"I2V Models: {args.i2v_model_paths}")
from fastapi import FastAPI, Request, HTTPException
from fastapi.responses import HTMLResponse, FileResponse
@@ -687,23 +674,23 @@ def main():
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>CausalWan</title>
<meta name="title" content="CausalWan">
<title>FastWan</title>
<meta name="title" content="FastWan">
<meta name="description" content="Make video generation go blurrrrrrr">
<meta name="keywords" content="FastVideo, video generation, AI, machine learning, CausalWan">
<meta name="keywords" content="FastVideo, video generation, AI, machine learning, FastWan">
<meta property="og:type" content="website">
<meta property="og:url" content="{base_url}/">
<meta property="og:title" content="CausalWan">
<meta property="og:title" content="FastWan">
<meta property="og:description" content="Make video generation go blurrrrrrr">
<meta property="og:image" content="{base_url}/logo.svg">
<meta property="og:image:width" content="1200">
<meta property="og:image:height" content="630">
<meta property="og:site_name" content="CausalWan">
<meta property="og:site_name" content="FastWan">
<meta property="twitter:card" content="summary_large_image">
<meta property="twitter:url" content="{base_url}/">
<meta property="twitter:title" content="CausalWan">
<meta property="twitter:title" content="FastWan">
<meta property="twitter:description" content="Make video generation go blurrrrrrr">
<meta property="twitter:image" content="{base_url}/logo.svg">
<link rel="icon" type="image/png" sizes="32x32" href="/favicon.ico">
@@ -733,14 +720,7 @@ def main():
app,
demo,
path="/gradio",
allowed_paths=[
os.path.abspath("outputs"),
os.path.abspath("fastvideo-logos"),
os.path.abspath("prompts"),
os.path.abspath("images"),
os.path.abspath(tempfile.gettempdir()),
os.path.abspath(os.path.join(tempfile.gettempdir(), "gradio")),
]
allowed_paths=[os.path.abspath("outputs"), os.path.abspath("fastvideo-logos")]
)
uvicorn.run(app, host=args.host, port=args.port)
@@ -1,15 +0,0 @@
Some friends dancing and having fun together in circles, at a party surrounded by colored lights at a party, in a fancy old place, in a view from below them.
A man wearing grey shorts jumps rope in a gym, weights and gym equipment in the background.
Flying over a peninsula covered in bushy trees, while discovering the sea around it, painted a beautiful turquoise blue, on a sunny day.
Skillful cyclist doing a wheelie on a bike while riding through a forest, on a dirt road, surrounded by many trees, in the morning.
In the video, a lone rider guides a majestic horse across an expansive, open field as the sun sets in the background. The rider, dressed in a classic blue shirt and wide-brimmed hat, sits confidently in the saddle, silhouetted against the warm glow of the evening sky. The horse moves gracefully, its mane and tail flowing with each step, creating a sense of harmony between horse and rider. Surrounding the pair, towering trees form a natural border, their leaves gently rustling in the breeze. The shadows lengthen on the ground, accentuating the serene and timeless feel of the scene. The distant hills and wooden fences frame the horizon, adding depth to the tranquil landscape. A few horses graze peacefully in the background, blending into the pastoral setting. The overall ambiance evokes a sense of calmness and quietude, capturing a perfect moment in the golden light of dusk.
A silver SUV drives along a winding, snow-covered mountain road, with dense pine trees blanketed in snow lining both sides. The scene is serene, with the vehicle moving smoothly, possibly on a winter journey or vacation. As the SUV disappears around the bend, another, darker SUV follows, creating a sense of motion and perspective on the snow-dusted asphalt. The towering, snow-laden rock formation to the right contrasts with the dark green of the pines, highlighting the peacefulness of the wintry landscape.
A man and a woman playing in a field with grass, during a bright afternoon, while cars pass by in the distance.
A saxophonist wearing a blazer dances while playing a song in a park.
Romantic couple embracing and looking at each other in the middle of a forest, during a break on a road trip through nature.
Young woman cleaning her house decorated with plants and decorations, while dancing happily to music in her headphones.
Man dressed in 80's style dances very happily in his kitchen while listening to music on his radio and drinking wine.
Pair of jazz musicians performing a song with their saxophone and trombone on an abandoned train.
A young woman with short hair wearing pink sunglasses chews gum and makes a bubble gum with the city in the background.
Natural aerial landscape with a relief covered with abundant trees and vegetation and a thick layer of mist.
Loving couple sitting on a log on the shore of a lake outside, sharing an affectionate hug.
@@ -26,7 +26,6 @@ SEED_RANGE_MAX = 1_000_000
SUPPORTED_MODELS = [
"FastVideo/FastWan2.1-T2V-1.3B-Diffusers",
"FastVideo/FastWan2.2-TI2V-5B-FullAttn-Diffusers",
"FastVideo/SFWan2.2-I2V-A14B-Preview-Diffusers",
]
MODEL_CONFIGS = {
@@ -43,13 +42,6 @@ MODEL_CONFIGS = {
"dit_cpu_offload": True,
"vae_cpu_offload": False,
"VSA_sparsity": 0.9,
},
"I2V-A14B": {
"num_cpus": 15,
"text_encoder_cpu_offload": True,
"dit_cpu_offload": True,
"vae_cpu_offload": False,
"VSA_sparsity": 0.0,
}
}
@@ -66,7 +58,6 @@ class VideoGenerationRequest(BaseModel):
randomize_seed: bool = False
return_frames: bool = False
model_path: Optional[str] = None
image_data: Optional[str] = None # Base64 encoded image for I2V
class VideoGenerationResponse(BaseModel):
@@ -100,38 +91,11 @@ def encode_video_to_base64(frames: List[np.ndarray], fps: int = DEFAULT_FPS) ->
return ""
def save_image_from_base64(image_data: str, output_dir: str) -> Optional[str]:
"""Save base64 image data to a temporary file and return the path."""
if not image_data:
return None
try:
# Remove data URL prefix if present
if image_data.startswith('data:image/'):
image_data = image_data.split(',')[1]
image_bytes = base64.b64decode(image_data)
# Save to temporary file
os.makedirs(output_dir, exist_ok=True)
temp_image_path = os.path.join(output_dir, f"temp_input_{int(time.time() * 1000)}.png")
with open(temp_image_path, 'wb') as f:
f.write(image_bytes)
return temp_image_path
except Exception as e:
print(f"Warning: Failed to save image: {e}")
return None
def setup_model_environment(model_path: str) -> None:
# if "fullattn" in model_path.lower():
# os.environ["FASTVIDEO_ATTENTION_BACKEND"] = "FLASH_ATTN"
# else:
# os.environ["FASTVIDEO_ATTENTION_BACKEND"] = "VIDEO_SPARSE_ATTN"
os.environ["FASTVIDEO_ATTENTION_BACKEND"] = "FLASH_ATTN"
if "fullattn" in model_path.lower():
os.environ["FASTVIDEO_ATTENTION_BACKEND"] = "FLASH_ATTN"
else:
os.environ["FASTVIDEO_ATTENTION_BACKEND"] = "VIDEO_SPARSE_ATTN"
os.environ["FASTVIDEO_STAGE_LOGGING"] = "1"
@@ -193,41 +157,22 @@ class BaseModelDeployment:
num_gpus=1,
use_fsdp_inference=True,
text_encoder_cpu_offload=config["text_encoder_cpu_offload"],
dmd_denoising_steps=[1000, 850, 700, 550, 350, 275, 200, 125], # TODO: hardocde for I2V
dit_precision="fp32", # TODO: hardocde for I2V
dit_cpu_offload=config["dit_cpu_offload"],
vae_cpu_offload=config["vae_cpu_offload"],
VSA_sparsity=config["VSA_sparsity"],
enable_stage_verification=False,
)
self.default_params = SamplingParam.from_pretrained(self.model_path)
self.default_params.seed = 1000
self.default_params.num_frames = 73
self.default_params.width = 832
self.default_params.height = 480
def generate_video(self, video_request: VideoGenerationRequest) -> VideoGenerationResponse:
total_start_time = time.time()
params = prepare_sampling_params(video_request, self.default_params)
# Save image if provided (for I2V)
image_path = None
if video_request.image_data:
image_path = save_image_from_base64(video_request.image_data, self.output_path)
if image_path is None:
return VideoGenerationResponse(
video_data=None,
seed=params.seed,
success=False,
error_message="Failed to save input image",
)
inference_start_time = time.time()
result = self.generator.generate_video(
prompt=video_request.prompt,
sampling_param=params,
image_path=image_path,
save_video=False,
return_frames=False,
)
@@ -240,13 +185,6 @@ class BaseModelDeployment:
encoding_time = time.time() - encoding_start_time
total_time = time.time() - total_start_time
# Clean up temporary image file
if image_path and os.path.exists(image_path):
try:
os.remove(image_path)
except Exception as e:
print(f"Warning: Failed to remove temporary image file {image_path}: {e}")
return VideoGenerationResponse(
video_data=video_data,
@@ -262,7 +200,7 @@ class BaseModelDeployment:
@serve.deployment(
ray_actor_options={"num_cpus": 2, "num_gpus": 1, "runtime_env": {"conda": "demo-fv"}},
ray_actor_options={"num_cpus": 2, "num_gpus": 1, "runtime_env": {"conda": "fv"}},
)
class T2VModelDeployment(BaseModelDeployment):
def __init__(self, t2v_model_path: str, output_path: str = "outputs"):
@@ -272,7 +210,7 @@ class T2VModelDeployment(BaseModelDeployment):
@serve.deployment(
ray_actor_options={"num_cpus": 16, "num_gpus": 1, "runtime_env": {"conda": "demo-fv"}},
ray_actor_options={"num_cpus": 16, "num_gpus": 1, "runtime_env": {"conda": "fv"}},
)
class T2V14BModelDeployment(BaseModelDeployment):
def __init__(self, t2v_14b_model_path: str, output_path: str = "outputs"):
@@ -283,32 +221,18 @@ class T2V14BModelDeployment(BaseModelDeployment):
print("✅ T2V 14B model initialized successfully")
@serve.deployment(
ray_actor_options={"num_cpus": 15, "num_gpus": 1, "runtime_env": {"conda": "demo-fv"}},
)
class I2VModelDeployment(BaseModelDeployment):
def __init__(self, i2v_model_path: str, output_path: str = "outputs"):
super().__init__(i2v_model_path, output_path)
# Override environment for I2V model
os.environ["FASTVIDEO_ATTENTION_BACKEND"] = "FLASH_ATTN"
self._initialize_generator(MODEL_CONFIGS["I2V-A14B"])
print("✅ I2V model initialized successfully")
app = FastAPI()
limiter = Limiter(key_func=get_remote_address)
app.state.limiter = limiter
app.add_exception_handler(RateLimitExceeded, _rate_limit_exceeded_handler)
@serve.deployment(num_replicas=1, ray_actor_options={"num_cpus": 1})
@serve.deployment(num_replicas=50, ray_actor_options={"num_cpus": 2})
@serve.ingress(app)
class FastVideoAPI:
def __init__(self, t2v_deployments: Dict[str, DeploymentHandle], i2v_deployments: Dict[str, DeploymentHandle] = None):
def __init__(self, t2v_deployments: Dict[str, DeploymentHandle]):
self.t2v_deployments = t2v_deployments
self.i2v_deployments = i2v_deployments or {}
self.all_deployments = {**self.t2v_deployments, **self.i2v_deployments}
# Initialize Prometheus metrics
self.request_count = Counter('fastvideo_requests_total', 'Total FastVideo requests', ['model_type', 'status'])
@@ -333,10 +257,10 @@ class FastVideoAPI:
model_name = self._get_model_name(video_request.model_path)
try:
if video_request.model_path not in self.all_deployments:
if video_request.model_path not in self.t2v_deployments:
raise ValueError(f"Model {video_request.model_path} not found")
response_ref = self.all_deployments[video_request.model_path].generate_video.remote(video_request)
response_ref = self.t2v_deployments[video_request.model_path].generate_video.remote(video_request)
response = await response_ref
self._record_metrics(model_name, "success", time.time() - start_time, response)
@@ -367,21 +291,18 @@ class FastVideoAPI:
def validate_configuration(model_paths: List[str], replicas: List[int]) -> None:
assert len(model_paths) > 0, "At least one model must be specified"
assert len(model_paths) == len(replicas), "Number of models and replicas must match"
assert sum(replicas) <= NUM_GPUS, f"Total replicas ({sum(replicas)}) must be <= {NUM_GPUS}"
for model, replica_count in zip(model_paths, replicas):
assert model in SUPPORTED_MODELS, f"Model {model} not supported. Supported models: {SUPPORTED_MODELS}"
assert model in SUPPORTED_MODELS, f"Model {model} not supported"
assert replica_count > 0, f"Replicas must be greater than 0"
def start_ray_serve(
*,
t2v_model_paths: str = "",
t2v_model_replicas: str = "",
i2v_model_paths: str = "",
i2v_model_replicas: str = "",
t2v_model_paths: str,
t2v_model_replicas: str,
output_path: str = "outputs",
host: str = "0.0.0.0",
port: int = 8000,
@@ -389,39 +310,21 @@ def start_ray_serve(
if not ray.is_initialized():
ray.init()
# Parse T2V models
t2v_paths = [p.strip() for p in t2v_model_paths.split(",") if p.strip()]
t2v_reps = [int(r.strip()) for r in t2v_model_replicas.split(",") if r.strip()] if t2v_model_replicas else []
# Parse I2V models
i2v_paths = [p.strip() for p in i2v_model_paths.split(",") if p.strip()]
i2v_reps = [int(r.strip()) for r in i2v_model_replicas.split(",") if r.strip()] if i2v_model_replicas else []
# Validate configurations
all_paths = t2v_paths + i2v_paths
all_replicas = t2v_reps + i2v_reps
validate_configuration(all_paths, all_replicas)
model_paths = t2v_model_paths.split(",")
replicas = [int(r) for r in t2v_model_replicas.split(",")]
validate_configuration(model_paths, replicas)
# Create T2V deployments
t2v_deps = {}
for model_path, replica_count in zip(t2v_paths, t2v_reps):
for model_path, replica_count in zip(model_paths, replicas):
t2v_dep = T2VModelDeployment.options(num_replicas=replica_count).bind(model_path, output_path)
t2v_deps[model_path] = t2v_dep
# Create I2V deployments
i2v_deps = {}
for model_path, replica_count in zip(i2v_paths, i2v_reps):
i2v_dep = I2VModelDeployment.options(num_replicas=replica_count).bind(model_path, output_path)
i2v_deps[model_path] = i2v_dep
api = FastVideoAPI.bind(t2v_deps, i2v_deps)
api = FastVideoAPI.bind(t2v_deps)
serve.run(api, route_prefix="/", name="fast_video")
print(f"Ray Serve backend started at http://{host}:{port}")
for model_path, replica_count in zip(t2v_paths, t2v_reps):
for model_path, replica_count in zip(model_paths, replicas):
print(f"T2V Model: {model_path} | Replicas: {replica_count}")
for model_path, replica_count in zip(i2v_paths, i2v_reps):
print(f"I2V Model: {model_path} | Replicas: {replica_count}")
print(f"Health check: http://{host}:{port}/health")
print(f"Video generation endpoint: http://{host}:{port}/generate_video")
@@ -437,20 +340,12 @@ if __name__ == "__main__":
parser = argparse.ArgumentParser(description="FastVideo Ray Serve Backend")
parser.add_argument("--t2v_model_paths",
type=str,
default="",
default="FastVideo/FastWan2.1-T2V-1.3B-Diffusers,FastVideo/FastWan2.2-TI2V-5B-FullAttn-Diffusers",
help="Comma separated list of paths to the T2V model(s)")
parser.add_argument("--t2v_model_replicas",
type=str,
default="",
default="4,4",
help="Comma separated list of number of replicas for the T2V model(s)")
parser.add_argument("--i2v_model_paths",
type=str,
default="FastVideo/SFWan2.2-I2V-A14B-Preview-Diffusers",
help="Comma separated list of paths to the I2V model(s)")
parser.add_argument("--i2v_model_replicas",
type=str,
default="1",
help="Comma separated list of number of replicas for the I2V model(s)")
parser.add_argument("--output_path",
type=str,
default="outputs",
@@ -466,21 +361,13 @@ if __name__ == "__main__":
args = parser.parse_args()
# Parse and validate all models
t2v_paths = [p.strip() for p in args.t2v_model_paths.split(",") if p.strip()]
t2v_reps = [int(r.strip()) for r in args.t2v_model_replicas.split(",") if r.strip()] if args.t2v_model_replicas else []
i2v_paths = [p.strip() for p in args.i2v_model_paths.split(",") if p.strip()]
i2v_reps = [int(r.strip()) for r in args.i2v_model_replicas.split(",") if r.strip()] if args.i2v_model_replicas else []
all_paths = t2v_paths + i2v_paths
all_replicas = t2v_reps + i2v_reps
validate_configuration(all_paths, all_replicas)
model_paths = args.t2v_model_paths.split(",")
replicas = [int(r) for r in args.t2v_model_replicas.split(",")]
validate_configuration(model_paths, replicas)
start_ray_serve(
t2v_model_paths=args.t2v_model_paths,
t2v_model_replicas=args.t2v_model_replicas,
i2v_model_paths=args.i2v_model_paths,
i2v_model_replicas=args.i2v_model_replicas,
output_path=args.output_path,
host=args.host,
port=args.port,
@@ -489,4 +376,4 @@ if __name__ == "__main__":
setup_signal_handlers()
print("✅ FastVideo backend is running. Press Ctrl-C to stop.")
while True:
time.sleep(3600)
time.sleep(3600)
+3 -5
View File
@@ -1,5 +1,3 @@
python examples/inference/gradio/serving/start_ray_serve_app.py \
--t2v_model_paths "" \
--t2v_model_replicas "" \
--i2v_model_paths "FastVideo/SFWan2.2-I2V-A14B-Preview-Diffusers" \
--i2v_model_replicas "1"
python examples/inference/gradio/start_ray_serve_app.py \
--t2v_model_paths "FastVideo/FastWan2.1-T2V-1.3B-Diffusers,FastVideo/FastWan2.2-TI2V-5B-FullAttn-Diffusers" \
--t2v_model_replicas "4,4"
@@ -20,10 +20,8 @@ DEFAULT_BACKEND_PORT = 8000
DEFAULT_FRONTEND_HOST = "0.0.0.0"
DEFAULT_FRONTEND_PORT = 7860
DEFAULT_OUTPUT_PATH = "outputs"
DEFAULT_T2V_MODELS = ""
DEFAULT_T2V_REPLICAS = ""
DEFAULT_I2V_MODELS = "FastVideo/SFWan2.2-I2V-A14B-Preview-Diffusers"
DEFAULT_I2V_REPLICAS = "1"
DEFAULT_T2V_MODELS = "FastVideo/FastWan2.1-T2V-1.3B-Diffusers,FastVideo/FastWan2.2-TI2V-5B-FullAttn-Diffusers"
DEFAULT_T2V_REPLICAS = "4,4"
HEALTH_CHECK_TIMEOUT = 5
HEALTH_CHECK_MAX_RETRIES = 100
@@ -102,12 +100,6 @@ class ServiceManager:
"port": self.args.backend_port
}
# Add I2V parameters if provided
if self.args.i2v_model_paths:
backend_args["i2v_model_paths"] = self.args.i2v_model_paths
if self.args.i2v_model_replicas:
backend_args["i2v_model_replicas"] = self.args.i2v_model_replicas
self.backend_process = self._start_service("ray_serve_backend.py", backend_args, "backend")
return self.backend_process
@@ -119,10 +111,6 @@ class ServiceManager:
"port": self.args.frontend_port
}
# Add I2V parameters if provided
if self.args.i2v_model_paths:
frontend_args["i2v_model_paths"] = self.args.i2v_model_paths
self.frontend_process = self._start_service("gradio_frontend.py", frontend_args, "frontend")
return self.frontend_process
@@ -185,9 +173,6 @@ def print_startup_info(args: argparse.Namespace) -> None:
print("=" * 50)
print(f"T2V Models: {args.t2v_model_paths}")
print(f"T2V Model Replicas: {args.t2v_model_replicas}")
if args.i2v_model_paths:
print(f"I2V Models: {args.i2v_model_paths}")
print(f"I2V Model Replicas: {args.i2v_model_replicas}")
print(f"Output: {args.output_path}")
print(f"Backend: http://{args.backend_host}:{args.backend_port}")
print(f"Frontend: http://{args.frontend_host}:{args.frontend_port}")
@@ -205,14 +190,6 @@ def parse_arguments() -> argparse.Namespace:
type=str,
default=DEFAULT_T2V_REPLICAS,
help="Comma separated list of number of replicas for the T2V model(s)")
parser.add_argument("--i2v_model_paths",
type=str,
default=DEFAULT_I2V_MODELS,
help="Comma separated list of paths to the I2V model(s)")
parser.add_argument("--i2v_model_replicas",
type=str,
default=DEFAULT_I2V_REPLICAS,
help="Comma separated list of number of replicas for the I2V model(s)")
parser.add_argument("--output_path",
type=str,
default=DEFAULT_OUTPUT_PATH,
-1
View File
@@ -45,7 +45,6 @@ class PipelineConfig:
embedded_cfg_scale: float = 6.0
flow_shift: float | None = None
disable_autocast: bool = False
is_causal: bool = False
# Model configuration
dit_config: DiTConfig = field(default_factory=DiTConfig)
-2
View File
@@ -39,8 +39,6 @@ PIPE_NAME_TO_CONFIG: dict[str, type[PipelineConfig]] = {
"FastVideo/Wan2.1-VSA-T2V-14B-720P-Diffusers": WanT2V720PConfig,
"wlsaidhi/SFWan2.1-T2V-1.3B-Diffusers": SelfForcingWanT2V480PConfig,
"rand0nmr/SFWan2.2-T2V-A14B-Diffusers": SelfForcingWan2_2_T2V480PConfig,
"FastVideo/SFWan2.2-I2V-A14B-Preview-Diffusers":
SelfForcingWan2_2_T2V480PConfig,
"Wan-AI/Wan2.2-TI2V-5B-Diffusers": Wan2_2_TI2V_5B_Config,
"Wan-AI/Wan2.2-T2V-A14B-Diffusers": Wan2_2_T2V_A14B_Config,
"Wan-AI/Wan2.2-I2V-A14B-Diffusers": Wan2_2_I2V_A14B_Config,
-2
View File
@@ -78,8 +78,6 @@ SAMPLING_PARAM_REGISTRY: dict[str, Any] = {
# Causal Self-Forcing Wan2.2
"rand0nmr/SFWan2.2-T2V-A14B-Diffusers":
SelfForcingWan2_2_T2V_A14B_480P_SamplingParam,
"FastVideo/SFWan2.2-I2V-A14B-Preview-Diffusers":
SelfForcingWan2_2_T2V_A14B_480P_SamplingParam,
# Cosmos2
"nvidia/Cosmos-Predict2-2B-Video2World":
+4 -21
View File
@@ -101,19 +101,12 @@ class BaseLayerWithLoRA(nn.Module):
def set_lora_weights(self,
A: torch.Tensor,
B: torch.Tensor,
lora_alpha: float | None = None,
training_mode: bool = False,
lora_path: str | None = None) -> None:
self.lora_A = torch.nn.Parameter(
A) # share storage with weights in the pipeline
self.lora_B = torch.nn.Parameter(B)
self.disable_lora = False
# Store rank and alpha directly
rank = A.shape[0] # rank is the first dimension of A
self.lora_rank = rank
self.lora_alpha = int(lora_alpha) if lora_alpha is not None else rank
if not training_mode:
self.merge_lora_weights()
self.lora_path = lora_path
@@ -141,13 +134,8 @@ class BaseLayerWithLoRA(nn.Module):
current_device = self.base_layer.weight.data.device
data = self.base_layer.weight.data.to(
get_local_torch_device()).full_tensor()
# Apply LoRA with alpha scaling
lora_delta = (self.slice_lora_b_weights(self.lora_B).to(data)
@ self.slice_lora_a_weights(self.lora_A).to(data))
if self.lora_alpha and self.lora_rank and self.lora_alpha != self.lora_rank:
lora_delta *= (self.lora_alpha / self.lora_rank)
data += lora_delta
data += (self.slice_lora_b_weights(self.lora_B).to(data)
@ self.slice_lora_a_weights(self.lora_A).to(data))
unsharded_base_layer.weight = nn.Parameter(data.to(current_device))
if isinstance(getattr(self.base_layer, "bias", None), DTensor):
unsharded_base_layer.bias = nn.Parameter(
@@ -166,13 +154,8 @@ class BaseLayerWithLoRA(nn.Module):
else:
current_device = self.base_layer.weight.data.device
data = self.base_layer.weight.data.to(get_local_torch_device())
# Apply LoRA with alpha scaling
lora_delta = (self.slice_lora_b_weights(self.lora_B.to(data))
@ self.slice_lora_a_weights(self.lora_A.to(data)))
if self.lora_alpha and self.lora_rank and self.lora_alpha != self.lora_rank:
lora_delta *= (self.lora_alpha / self.lora_rank)
data += lora_delta
data += \
(self.slice_lora_b_weights(self.lora_B.to(data)) @ self.slice_lora_a_weights(self.lora_A.to(data)))
self.base_layer.weight.data = data.to(current_device,
non_blocking=True)
+3 -28
View File
@@ -28,8 +28,7 @@ class LoRAPipeline(ComposedPipelineBase):
TODO: support training.
"""
lora_adapters: dict[str, dict[str, torch.Tensor]] = defaultdict(
dict
) # state dicts of loaded lora adapters (includes lora_A, lora_B, and lora_alpha)
dict) # state dicts of loaded lora adapters
cur_adapter_name: str = ""
cur_adapter_path: str = ""
lora_layers: dict[str, BaseLayerWithLoRA] = {}
@@ -184,26 +183,11 @@ class LoRAPipeline(ComposedPipelineBase):
lora_param_names_mapping_fn = get_param_names_mapping(
self.modules["transformer"].lora_param_names_mapping)
# Extract alpha values and weights in a single pass
to_merge_params: defaultdict[Hashable,
dict[Any, Any]] = defaultdict(dict)
for name, weight in lora_state_dict.items():
# Extract weights (lora_A, lora_B, and lora_alpha)
name = name.replace("diffusion_model.", "")
name = name.replace(".weight", "")
if "lora_alpha" in name:
# Store alpha with minimal mapping - same processing as lora_A/lora_B
# but store in lora_adapters with ".lora_alpha" suffix
layer_name = name.replace(".lora_alpha", "")
layer_name, _, _ = lora_param_names_mapping_fn(layer_name)
target_name, _, _ = param_names_mapping_fn(layer_name)
# Store alpha alongside weights with same target_name base
alpha_key = target_name + ".lora_alpha"
self.lora_adapters[lora_nickname][alpha_key] = weight.item(
) if weight.numel() == 1 else float(weight.mean())
continue
name, _, _ = lora_param_names_mapping_fn(name)
target_name, merge_index, num_params_to_merge = param_names_mapping_fn(
name)
@@ -241,20 +225,11 @@ class LoRAPipeline(ComposedPipelineBase):
for name, layer in self.lora_layers.items():
lora_A_name = name + ".lora_A"
lora_B_name = name + ".lora_B"
lora_alpha_name = name + ".lora_alpha"
if lora_A_name in self.lora_adapters[lora_nickname]\
and lora_B_name in self.lora_adapters[lora_nickname]:
# Get alpha value for this layer (defaults to None if not present)
lora_A = self.lora_adapters[lora_nickname][lora_A_name]
lora_B = self.lora_adapters[lora_nickname][lora_B_name]
# Simple lookup - alpha stored with same naming scheme as lora_A/lora_B
alpha = self.lora_adapters[lora_nickname].get(
lora_alpha_name) if adapter_updated else None
layer.set_lora_weights(
lora_A,
lora_B,
lora_alpha=alpha,
self.lora_adapters[lora_nickname][lora_A_name],
self.lora_adapters[lora_nickname][lora_B_name],
training_mode=self.fastvideo_args.training_mode,
lora_path=lora_path)
adapted_count += 1
+8 -21
View File
@@ -85,10 +85,10 @@ class CausalDMDDenosingStage(DenoisingStage):
if fastvideo_args.pipeline_config.dit_config.boundary_ratio is not None:
boundary_timestep = fastvideo_args.pipeline_config.dit_config.boundary_ratio * self.scheduler.num_train_timesteps
high_noise_timesteps = timesteps[timesteps >= boundary_timestep]
else:
boundary_timestep = None
high_noise_timesteps = None
high_noise_timesteps = timesteps[timesteps >= boundary_timestep]
# Image kwargs (kept empty unless caller provides compatible args)
image_kwargs: dict = {}
@@ -123,12 +123,11 @@ class CausalDMDDenosingStage(DenoisingStage):
dtype=target_dtype,
device=latents.device)
def _get_kv_cache(timestep: float) -> list[dict]:
def _get_kv_cache(timestep: float) -> dict:
if boundary_timestep is not None:
if timestep >= boundary_timestep:
return kv_cache1
else:
assert kv_cache2 is not None, "kv_cache2 is not initialized"
return kv_cache2
return kv_cache1
@@ -142,18 +141,10 @@ class CausalDMDDenosingStage(DenoisingStage):
pos_start_base = 0
# Determine block sizes
if t % self.num_frames_per_block != 0:
raise ValueError(
"num_frames must be divisible by num_frames_per_block for causal DMD denoising"
)
num_blocks = t // self.num_frames_per_block
block_sizes = [self.num_frames_per_block] * num_blocks
block_sizes = [self.num_frames_per_block] * 7
block_sizes[0] = 1
start_index = 0
# For now hardcode the first block to be 1 frame assuming the model is Wan2.2-MoE
if boundary_timestep is not None:
block_sizes[0] = 1
first_frame_latent = None
if batch.pil_image is not None:
# Causal video gen directly replaces the first frame of the latent with
@@ -400,14 +391,10 @@ class CausalDMDDenosingStage(DenoisingStage):
start_index += current_num_frames
if boundary_timestep is not None:
num_frames_to_remove = self.num_frames_per_block - 1
latents = latents[:, :, :-num_frames_to_remove, :, :]
batch.latents = latents
return batch
def _initialize_kv_cache(self, batch_size, dtype, device) -> list[dict]:
def _initialize_kv_cache(self, batch_size, dtype, device) -> None:
"""
Initialize a Per-GPU KV cache aligned with the Wan model assumptions.
"""
@@ -444,7 +431,7 @@ class CausalDMDDenosingStage(DenoisingStage):
return kv_cache1
def _initialize_crossattn_cache(self, batch_size, max_text_len, dtype,
device) -> list[dict]:
device) -> None:
"""
Initialize a Per-GPU cross-attention cache aligned with the Wan model assumptions.
"""
@@ -494,4 +481,4 @@ class CausalDMDDenosingStage(DenoisingStage):
result.add_check(
"negative_prompt_embeds", batch.negative_prompt_embeds, lambda x:
not batch.do_classifier_free_guidance or V.list_not_empty(x))
return result
return result
+19 -19
View File
@@ -5,7 +5,6 @@ Input validation stage for diffusion pipelines.
import torch
import torchvision.transforms.functional as TF
from PIL import Image
from fastvideo.fastvideo_args import FastVideoArgs
from fastvideo.logger import init_logger
@@ -14,7 +13,6 @@ from fastvideo.pipelines.pipeline_batch_info import ForwardBatch
from fastvideo.pipelines.stages.base import PipelineStage
from fastvideo.pipelines.stages.validators import (StageValidators,
VerificationResult)
from fastvideo.utils import best_output_size
logger = init_logger(__name__)
@@ -110,25 +108,27 @@ class InputValidationStage(PipelineStage):
or fastvideo_args.pipeline_config.is_causal
) and batch.pil_image is not None:
img = batch.pil_image
ih, iw = img.height, img.width
patch_size = fastvideo_args.pipeline_config.dit_config.arch_config.patch_size
vae_stride = fastvideo_args.pipeline_config.vae_config.arch_config.scale_factor_spatial
dh, dw = patch_size[1] * vae_stride, patch_size[2] * vae_stride
max_area = 480 * 832
ow, oh = best_output_size(iw, ih, dw, dh, max_area)
# ih, iw = img.height, img.width
# patch_size = fastvideo_args.pipeline_config.dit_config.arch_config.patch_size
# vae_stride = fastvideo_args.pipeline_config.vae_config.arch_config.scale_factor_spatial
# dh, dw = patch_size[1] * vae_stride, patch_size[2] * vae_stride
# max_area = 720 * 1280
# ow, oh = best_output_size(iw, ih, dw, dh, max_area)
scale = max(ow / iw, oh / ih)
img = img.resize((round(iw * scale), round(ih * scale)),
Image.LANCZOS)
# center-crop
x1 = (img.width - ow) // 2
y1 = (img.height - oh) // 2
img = img.crop((x1, y1, x1 + ow, y1 + oh))
assert img.width == ow and img.height == oh
logger.info("final processed img height: %s, img width: %s",
img.height, img.width)
# scale = max(ow / iw, oh / ih)
# img = img.resize((round(iw * scale), round(ih * scale)),
# Image.LANCZOS)
# logger.info("resized img height: %s, img width: %s", img.height,
# img.width)
# # center-crop
# x1 = (img.width - ow) // 2
# y1 = (img.height - oh) // 2
# img = img.crop((x1, y1, x1 + ow, y1 + oh))
# assert img.width == ow and img.height == oh
logger.info("img height: %s, img width: %s", img.height, img.width)
oh = img.height
ow = img.width
# to tensor
img = TF.to_tensor(img).sub_(0.5).div_(0.5).to(
self.device).unsqueeze(1)
@@ -1,7 +1,6 @@
# SPDX-License-Identifier: Apache-2.0
import json
import os
import re
import pytest
@@ -53,38 +52,12 @@ LORA_CONFIGS = [
"negative_prompt": "bad quality video,色调艳丽,过曝,静态,细节模糊不清,字幕,风格,作品,画作,画面,静止,整体发灰,最差质量,低质量,JPEG压缩残留,丑陋的,残缺的,多余的手指,画得不好的手部,画得不好的脸部,畸形的,毁容的,形态畸形的肢体,手指融合,静止不动的画面,杂乱的背景,三条腿,背景人很多,倒着走",
"ssim_threshold": 0.79
}
# TODO: Add a LoRA with lora_alpha values to test alpha scaling
#
# Context: This change is mainly for an in-progress ticket porting over LongCat-Video,
# where they used an alpha value that is two times smaller than their rank. This fix
# ensures that LoRA weights are correctly scaled by the alpha/rank ratio when merged.
#
# Issue: Currently, we cannot add a test for LoRA adapters with alpha values because:
# - The existing public LoRAs for Wan-AI/Wan2.1-T2V-1.3B-Diffusers don't store lora_alpha
# - No publicly available LoRA for this model includes lora_alpha tensors in their weights
# - This is why the alpha/rank scaling bug wasn't caught by existing tests
#
# The fix has been validated with:
# - LongCat-Video distilled LoRA (which includes alpha values)
# - Manual testing shows correct alpha/rank scaling behavior
# - Backward compatibility confirmed with LoRAs without alpha values
#
# Future work:
# - Add a synthetic LoRA test fixture with alpha values when feasible
# - Or wait for public Wan LoRAs with alpha to become available
]
MODEL_TO_PARAMS = {
"Wan-AI/Wan2.1-T2V-1.3B-Diffusers": WAN_LORA_PARAMS,
}
def _sanitize_filename_component(name: str) -> str:
"""Sanitize filename to remove invalid characters (same logic as VideoGenerator)"""
sanitized = re.sub(r'[\\/:*?"<>|]', '', name)
sanitized = sanitized.strip().strip('.')
sanitized = re.sub(r'\s+', ' ', sanitized)
return sanitized or "video"
@pytest.mark.parametrize("model_id", list(MODEL_TO_PARAMS.keys()))
def test_merge_lora_weights(model_id):
lora_config = LORA_CONFIGS[0] # test only one
@@ -164,16 +137,14 @@ def test_lora_inference_similarity(ATTENTION_BACKEND, model_id):
generation_kwargs["negative_prompt"] = lora_config["negative_prompt"]
generator.set_lora_adapter(lora_nickname=lora_nickname, lora_path=lora_path)
# Sanitize the filename before adding .mp4 extension to match VideoGenerator's behavior
output_video_name = f"{lora_path.split('/')[-1]}_{prompt[:50]}"
output_video_name = _sanitize_filename_component(output_video_name)
generated_video_path = os.path.join(output_dir, f"{output_video_name}.mp4")
generation_kwargs["output_path"] = generated_video_path
generation_kwargs["output_path"] = output_dir
generation_kwargs["output_video_name"] = output_video_name
generator.generate_video(prompt, **generation_kwargs)
assert os.path.exists(
generated_video_path), f"Output video was not generated at {generated_video_path}"
output_dir), f"Output video was not generated at {output_dir}"
reference_folder = os.path.join(script_dir, 'L40S_reference_videos', model_id.split('/')[-1], ATTENTION_BACKEND)
@@ -182,25 +153,13 @@ def test_lora_inference_similarity(ATTENTION_BACKEND, model_id):
raise FileNotFoundError(
f"Reference video folder does not exist: {reference_folder}")
# Find the matching reference video - try exact match first, then fuzzy match
# The reference might have different sanitization (e.g., trailing spaces)
# Find the matching reference video for the switched LoRA
reference_video_name = None
unsanitized_prefix = f"{lora_path.split('/')[-1]}_{prompt[:50]}"
for filename in os.listdir(reference_folder):
if not filename.endswith('.mp4'):
continue
# Try exact match with sanitized name
if filename.startswith(output_video_name):
reference_video_name = filename
break
# Try match with unsanitized prefix (for legacy reference videos)
# Remove .mp4 and compare the base names after sanitization
base_filename = filename[:-4] # Remove .mp4
if _sanitize_filename_component(base_filename) == output_video_name:
reference_video_name = filename
# Check if the filename starts with the expected output_video_name and ends with .mp4
if filename.startswith(output_video_name) and filename.endswith('.mp4'):
reference_video_name = filename # Remove .mp4 extension to match the logic below
break
if not reference_video_name:
@@ -208,6 +167,7 @@ def test_lora_inference_similarity(ATTENTION_BACKEND, model_id):
raise FileNotFoundError(f"Reference video missing for adapter {lora_path}")
reference_video_path = os.path.join(reference_folder, reference_video_name)
generated_video_path = os.path.join(output_dir, output_video_name + ".mp4")
logger.info(
f"Computing SSIM between {reference_video_path} and {generated_video_path}"
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@@ -62,49 +62,5 @@
{
"prompt": "A solitary boat glides across the expansive, tranquil expanse of a serene lake. The vessel leaves a gentle wake behind, creating delicate ripples across the mirror-like surface. The water appears a rich shade of teal, seamlessly blending with the sky at the horizon. Silhouettes of distant trees are faintly visible, creating a picturesque backdrop that enhances the solitary journey of the boat. The sky is a calm gradient, shifting from soft oranges near the shore to the pale blues above. In the distance, a few slender poles emerge from the water, remnants of an old structure or natural formation. The mood of the scene is one of peace and solitude, with the boat journeying steadily through the quiet landscape. There is a sense of endless possibilities as the boat moves toward the unseen beyond the frame. The simplicity and stillness of the scene invite contemplation and reflection, encapsulating a perfect moment of quietude on the water.",
"image_path": "images/mixkit-motorboat-on-a-large-lake-with-turquoise-blue-waters-4996.png"
},
{
"prompt": "A man wearing grey shorts jumps rope in a gym, weights and gym equipment in the background.",
"image_path": "images/gray_short_man.jpg"
},
{
"prompt": "Flying over a peninsula covered in bushy trees, while discovering the sea around it, painted a beautiful turquoise blue, on a sunny day.",
"image_path": "images/peninsula.jpg"
},
{
"prompt": "Skillful cyclist doing a wheelie on a bike while riding through a forest, on a dirt road, surrounded by many trees, in the morning.",
"image_path": "images/cyclist.jpg"
},
{
"prompt": "Some friends dancing and having fun together in circles, at a party surrounded by colored lights at a party, in a fancy old place, in a view from below them.",
"image_path": "images/friends.jpg"
},
{
"prompt": "A saxophonist wearing a blazer dances while playing a song in a park.",
"image_path": "images/saxophonist.jpg"
},
{
"prompt": "Romantic couple embracing and looking at each other in the middle of a forest, during a break on a road trip through nature.",
"image_path": "images/romance.jpg"
},
{
"prompt": "Man dressed in 80's style dances very happily in his kitchen while listening to music on his radio and drinking wine.",
"image_path": "images/80s_dance.jpg"
},
{
"prompt": "Pair of jazz musicians performing a song with their saxophone and trombone on an abandoned train.",
"image_path": "images/jazz.jpg"
},
{
"prompt": "A young woman with short hair wearing pink sunglasses chews gum and makes a bubble gum with the city in the background.",
"image_path": "images/pink.jpg"
},
{
"prompt": "Natural aerial landscape with a relief covered with abundant trees and vegetation and a thick layer of mist.",
"image_path": "images/natural.jpg"
},
{
"prompt": "Loving couple sitting on a log on the shore of a lake outside, sharing an affectionate hug.",
"image_path": "images/couple.jpg"
}
]
]