v0.24.0: IP Adapters, Kandinsky 3.0, Stable Video Diffusion, SDXL Turbo

Stable Video Diffusion, SDXL Turbo, IP Adapters, Kandinsky 3.0

Stable Diffusion Video

Stable Video Diffusion is a powerful image-to-video generation model that can generate high resolution (576x1024) 2-4 seconds videos conditioned on the input image.

Image to Video Generation

There are two variants of SVD. SVD and SVD-XT. The SVD checkpoint is trained to generate 14 frames and the SVD-XT checkpoint is further finetuned to generate 25 frames.

You need to condition the generation on an initial image, as follows:

import torch

from diffusers import StableVideoDiffusionPipeline
from diffusers.utils import load_image, export_to_video

pipe = StableVideoDiffusionPipeline.from_pretrained(
    "stabilityai/stable-video-diffusion-img2vid-xt", torch_dtype=torch.float16, variant="fp16"
)
pipe.enable_model_cpu_offload()

# Load the conditioning image
image = load_image("https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/svd/rocket.png?download=true")
image = image.resize((1024, 576))

generator = torch.manual_seed(42)
frames = pipe(image, decode_chunk_size=8, generator=generator).frames[0]

export_to_video(frames, "generated.mp4", fps=7)

Since generating videos is more memory intensive, we can use the decode_chunk_size argument to control how many frames are decoded at once. This will reduce the memory usage. It's recommended to tweak this value based on your GPU memory. Setting decode_chunk_size=1 will decode one frame at a time and will use the least amount of memory, but the video might have some flickering.

Additionally, we also use model cpu offloading to reduce the memory usage.

SDXL Turbo

SDXL Turbo is an adversarial time-distilled Stable Diffusion XL (SDXL) model capable of running inference in as little as 1 step. Also, it does not use classifier-free guidance, further increasing its speed. On a good consumer GPU, you can now generate an image in just 100ms.

Text-to-Image

For text-to-image, pass a text prompt. By default, SDXL Turbo generates a 512x512 image, and that resolution gives the best results. You can try setting the height and width parameters to 768x768 or 1024x1024, but you should expect quality degradations when doing so.

Make sure to set guidance_scale to 0.0 to disable, as the model was trained without it. A single inference step is enough to generate high quality images.
Increasing the number of steps to 2, 3 or 4 should improve image quality.

from diffusers import AutoPipelineForText2Image
import torch

pipeline_text2image = AutoPipelineForText2Image.from_pretrained("stabilityai/sdxl-turbo", torch_dtype=torch.float16, variant="fp16")
pipeline_text2image = pipeline_text2image.to("cuda")

prompt = "A cinematic shot of a baby racoon wearing an intricate italian priest robe."

image = pipeline_text2image(prompt=prompt, guidance_scale=0.0, num_inference_steps=1).images[0]
image

Image-to-image

For image-to-image generation, make sure that num_inference_steps * strength is larger or equal to 1.
The image-to-image pipeline will run for int(num_inference_steps * strength) steps, e.g. 0.5 * 2.0 = 1 step in
our example below.

from diffusers import AutoPipelineForImage2Image
from diffusers.utils import load_image, make_image_grid

# use from_pipe to avoid consuming additional memory when loading a checkpoint
pipeline = AutoPipelineForImage2Image.from_pipe(pipeline_text2image).to("cuda")

init_image = load_image("https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/cat.png")
init_image = init_image.resize((512, 512))

prompt = "cat wizard, gandalf, lord of the rings, detailed, fantasy, cute, adorable, Pixar, Disney, 8k"

image = pipeline(prompt, image=init_image, strength=0.5, guidance_scale=0.0, num_inference_steps=2).images[0]
make_image_grid([init_image, image], rows=1, cols=2)

IP Adapters

IP Adapters have shown to be remarkably powerful at images conditioned on other images.

Thanks to @okotaku, we have added IP adapters to the most important pipelines allowing you to combine them for a variety of different workflows, e.g. they work with Img2Img2, ControlNet, and LCM-LoRA out of the box.

LCM-LoRA

from diffusers import DiffusionPipeline, LCMScheduler
import torch
from diffusers.utils import load_image

model_id =  "sd-dreambooth-library/herge-style"
lcm_lora_id = "latent-consistency/lcm-lora-sdv1-5"

pipe = DiffusionPipeline.from_pretrained(model_id, torch_dtype=torch.float16)

pipe.load_ip_adapter("h94/IP-Adapter", subfolder="models", weight_name="ip-adapter_sd15.bin")
pipe.load_lora_weights(lcm_lora_id)
pipe.scheduler = LCMScheduler.from_config(pipe.scheduler.config)
pipe.enable_model_cpu_offload()

prompt = "best quality, high quality"
image = load_image("https://user-images.githubusercontent.com/24734142/266492875-2d50d223-8475-44f0-a7c6-08b51cb53572.png")
images = pipe(
    prompt=prompt,
    ip_adapter_image=image,
    num_inference_steps=4,
    guidance_scale=1,
).images[0]

ControlNet

from diffusers import StableDiffusionControlNetPipeline, ControlNetModel
import torch
from diffusers.utils import load_image

controlnet_model_path = "lllyasviel/control_v11f1p_sd15_depth"
controlnet = ControlNetModel.from_pretrained(controlnet_model_path, torch_dtype=torch.float16)

pipeline = StableDiffusionControlNetPipeline.from_pretrained(
    "runwayml/stable-diffusion-v1-5", controlnet=controlnet, torch_dtype=torch.float16)
pipeline.to("cuda")

image = load_image("https://huggingface.co/datasets/YiYiXu/testing-images/resolve/main/statue.png")
depth_map = load_image("https://huggingface.co/datasets/YiYiXu/testing-images/resolve/main/depth.png")

pipeline.load_ip_adapter("h94/IP-Adapter", subfolder="models", weight_name="ip-adapter_sd15.bin")

generator = torch.Generator(device="cpu").manual_seed(33)
images = pipeline(
    prompt='best quality, high quality', 
    image=depth_map,
    ip_adapter_image=image,
    negative_prompt="monochrome, lowres, bad anatomy, worst quality, low quality", 
    num_inference_steps=50,
    generator=generator,
).images
images[0].save("yiyi_test_2_out.png")

ip_image	condition	output

For more information:

• 👉 https://huggingface.co/docs/diffusers/main/en/using-diffusers/loading_adapters#ip-adapter

Kandinsky 3.0

Kandinsky has released the 3rd version, which has much improved text-to-image alignment thanks to using Flan-T5 as the text encoder.

Text-to-Image

from diffusers import AutoPipelineForText2Image
import torch

pipe = AutoPipelineForText2Image.from_pretrained("kandinsky-community/kandinsky-3", variant="fp16", torch_dtype=torch.float16)
pipe.enable_model_cpu_offload()
        
prompt = "A photograph of the inside of a subway train. There are raccoons sitting on the seats. One of them is reading a newspaper. The window shows the city in the background."

generator = torch.Generator(device="cpu").manual_seed(0)
image = pipe(prompt, num_inference_steps=25, generator=generator).images[0]

Image-to-Image

from diffusers import AutoPipelineForImage2Image
from diffusers.utils import load_image
import torch

pipe = AutoPipelineForImage2Image.from_pretrained("kandinsky-community/kandinsky-3", variant="fp16", torch_dtype=torch.float16)
pipe.enable_model_cpu_offload()
        
prompt = "A painting of the inside of a subway train with tiny raccoons."
image = load_image("https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main/kandinsky3/t2i.png")

generator = torch.Generator(device="cpu").manual_seed(0)
image = pipe(prompt, image=image, strength=0.75, num_inference_steps=25, generator=generator).images[0]

Check it out:

• 👉 https://huggingface.co/docs/diffusers/main/en/api/pipelines/kandinsky3#kandinsky-3

All commits

• LCM-LoRA docs by @patil-suraj in #5782
• [Docs] Update and make improvements by @StandardAI in #5819
• [docs] Fix title by @stevhliu in #5831
• Improve setup.py and add dependency check by @patrickvonplaten in #5826
• [Docs] add: japanese sdxl as a reference by @sayakpaul in #5844
• Set usedforsecurity=False in hashlib methods (FIPS compliance) by @Wauplin in #5790
• fix memory consistency decoder test by @williamberman in #5828
• [PEFT]...

[Patch release] Make sure we install correct PEFT version

Small patch release to make sure the correct PEFT version is installed.

All commits

• Improve setup.py and add dependency check by @patrickvonplaten in #5826

v0.23.0: LCM LoRA, SDXL LCM, Consistency Decoder from DALL-E 3

LCM LoRA, LCM SDXL, Consistency Decoder

LCM LoRA

Latent Consistency Models (LCM) made quite the mark in the Stable Diffusion community by enabling ultra-fast inference. LCM author @luosiallen, alongside @patil-suraj and @dg845, managed to extend the LCM support for Stable Diffusion XL (SDXL) and pack everything into a LoRA.

The approach is called LCM LoRA.

Below is an example of using LCM LoRA, taking just 4 inference steps:

from diffusers import DiffusionPipeline, LCMScheduler
import torch

model_id = "stabilityai/stable-diffusion-xl-base-1.0"
lcm_lora_id = "latent-consistency/lcm-lora-sdxl"

pipe = DiffusionPipeline.from_pretrained(model_id, variant="fp16", torch_dtype=torch.float16).to("cuda")

pipe.load_lora_weights(lcm_lora_id)
pipe.scheduler = LCMScheduler.from_config(pipe.scheduler.config)

prompt = "close-up photography of old man standing in the rain at night, in a street lit by lamps, leica 35mm summilux"
image = pipe(
    prompt=prompt,
    num_inference_steps=4,
    guidance_scale=1,
).images[0]

You can combine the LoRA with Img2Img, Inpaint, ControlNet, ...

as well as with other LoRAs 🤯

👉 Checkpoints
📜 Docs

If you want to learn more about the approach, please have a look at the following:

• Paper
• Blog

LCM SDXL

Continuing the work of Latent Consistency Models (LCM), we've applied the approach to SDXL as well and give you SSD-1B and SDXL fine-tuned checkpoints.

from diffusers import DiffusionPipeline, UNet2DConditionModel, LCMScheduler
import torch

unet = UNet2DConditionModel.from_pretrained(
    "latent-consistency/lcm-sdxl",
    torch_dtype=torch.float16,
    variant="fp16",
)
pipe = DiffusionPipeline.from_pretrained(
    "stabilityai/stable-diffusion-xl-base-1.0", unet=unet, torch_dtype=torch.float16
).to("cuda")
pipe.scheduler = LCMScheduler.from_config(pipe.scheduler.config)

prompt = "Self-portrait oil painting, a beautiful cyborg with golden hair, 8k"

generator = torch.manual_seed(0)
image = pipe(
    prompt=prompt, num_inference_steps=4, generator=generator, guidance_scale=1.0
).images[0]

👉 Checkpoints
📜 Docs

Consistency Decoder

OpenAI open-sourced the consistency decoder used in DALL-E 3. It improves the decoding part in the Stable Diffusion v1 family of models.

import torch
from diffusers import DiffusionPipeline, ConsistencyDecoderVAE

vae = ConsistencyDecoderVAE.from_pretrained("openai/consistency-decoder", torch_dtype=pipe.torch_dtype)
pipe = StableDiffusionPipeline.from_pretrained(
    "runwayml/stable-diffusion-v1-5", vae=vae, torch_dtype=torch.float16
).to("cuda")

pipe("horse", generator=torch.manual_seed(0)).images

Find the documentation here to learn more.

All commits

• [Custom Pipelines] Make sure that community pipelines can use repo revision by @patrickvonplaten in #5659
• post release (v0.22.0) by @sayakpaul in #5658
• Add Pixart to AUTO_TEXT2IMAGE_PIPELINES_MAPPING by @Beinsezii in #5664
• Update custom diffusion attn processor by @DN6 in #5663
• Model tests xformers fixes by @DN6 in #5679
• Update free model hooks by @DN6 in #5680
• Fix Basic Transformer Block by @DN6 in #5683
• Explicit torch/flax dependency check by @DN6 in #5673
• [PixArt-Alpha] fix mask_feature so that precomputed embeddings work with a batch size > 1 by @sayakpaul in #5677
• Make sure DDPM and diffusers can be used without Transformers by @sayakpaul in #5668
• [PixArt-Alpha] Support non-square images by @sayakpaul in #5672
• Improve LCMScheduler by @dg845 in #5681
• [Docs] Fix typos, improve, update at Using Diffusers' Task page by @StandardAI in #5611
• Replacing the nn.Mish activation function with a get_activation function. by @hi-sushanta in #5651
• speed up Shap-E fast test by @yiyixuxu in #5686
• Fix the misaligned pipeline usage in dreamshaper docstrings by @kirill-fedyanin in #5700
• Fixed is_safetensors_compatible() handling of windows path separators by @PhilLab in #5650
• [LCM] Fix img2img by @patrickvonplaten in #5698
• [PixArt-Alpha] fix mask feature condition. by @sayakpaul in #5695
• Fix styling issues by @patrickvonplaten in #5699
• Add adapter fusing + PEFT to the docs by @apolinario in #5662
• Fix prompt bug in AnimateDiff by @DN6 in #5702
• [Bugfix] fix error of peft lora when xformers enabled by @okotaku in #5697
• Install accelerate from PyPI in PR test runner by @DN6 in #5721
• consistency decoder by @williamberman in #5694
• Correct consist dec by @patrickvonplaten in #5722
• LCM Add Tests by @patrickvonplaten in #5707
• [LCM] add: locm docs. by @sayakpaul in #5723
• Add LCM Scripts by @patil-suraj in #5727

v0.22.3: Fix PixArtAlpha and LCM Image-to-Image pipelines

🐛 There were some sneaky bugs in the PixArt-Alpha and LCM Image-to-Image pipelines which have been fixed in this release.

All commits

• [LCM] Fix img2img by @patrickvonplaten in #5698
• [PixArt-Alpha] fix mask feature condition. by @sayakpaul in #5695

Patch Release v0.22.2: Fix Animate Diff, fix DDPM import, Pixart various

• Fix Basic Transformer Block by @DN6 in #5683
• [PixArt-Alpha] fix mask_feature so that precomputed embeddings work with a batch size > 1 by @sayakpaul in #5677
• Make sure DDPM and diffusers can be used without Transformers by @sayakpaul in #5668
• [PixArt-Alpha] Support non-square images by @sayakpaul in #5672

Patch Release: Fix community vs. hub pipelines revision

• [Custom Pipelines] Make sure that community pipelines can use repo revision by @patrickvonplaten

v0.22.0: LCM, PixArt-Alpha, AnimateDiff, PEFT integration for LoRA, and more

Latent Consistency Models (LCM)

LCMs enable a significantly fast inference process for diffusion models. They require far fewer inference steps to produce high-resolution images without compromising the image quality too much. Below is a usage example:

import torch
from diffusers import DiffusionPipeline

pipe = DiffusionPipeline.from_pretrained("SimianLuo/LCM_Dreamshaper_v7", torch_dtype=torch.float32)

# To save GPU memory, torch.float16 can be used, but it may compromise image quality.
pipe.to(torch_device="cuda", torch_dtype=torch.float32)

prompt = "Self-portrait oil painting, a beautiful cyborg with golden hair, 8k"

# Can be set to 1~50 steps. LCM support fast inference even <= 4 steps. Recommend: 1~8 steps.
num_inference_steps = 4 

images = pipe(prompt=prompt, num_inference_steps=num_inference_steps, guidance_scale=8.0).images

Refer to the documentation to learn more.

LCM comes with both text-to-image and image-to-image pipelines and they were contributed by @luosiallen, @nagolinc, and @dg845.

PixArt-Alpha

PixArt-Alpha is a Transformer-based text-to-image diffusion model that rivals the quality of the existing state-of-the-art ones, such as Stable Diffusion XL, Imagen, and DALL-E 2, while being more efficient.

It was trained T5 text embeddings and has a maximum sequence length of 120. Thus, it allows for more detailed prompt inputs, unlocking better quality generations.

Despite the large text encoder, with model offloading, it takes a little under 11GBs of VRAM to run the PixArtAlphaPipeline:

from diffusers import PixArtAlphaPipeline
import torch 

pipeline_id = "PixArt-alpha/PixArt-XL-2-1024-MS"
pipeline = PixArtAlphaPipeline.from_pretrained(pipeline_id, torch_dtype=torch.float16)
pipeline.enable_model_cpu_offload()

prompt = "A small cactus with a happy face in the Sahara desert."
image = pipe(prompt).images[0]
image.save("sahara.png")

Check out the docs to learn more.

AnimateDiff

AnimateDiff is a modelling framework that allows you to create videos using pre-existing Stable Diffusion text-to-image models. It achieves this by inserting motion module layers into a frozen text-to-image model and training it on video clips to extract a motion prior.

These motion modules are applied after the ResNet and Attention blocks in the Stable Diffusion UNet. Their purpose is to introduce coherent motion across image frames. To support these modules, we introduce the concepts of a MotionAdapter and a UNetMotionModel. These serve as a convenient way to use these motion modules with existing Stable Diffusion models.

The following example demonstrates how you can utilize the motion modules with an existing Stable Diffusion text-to-image model.

import torch
from diffusers import MotionAdapter, AnimateDiffPipeline, DDIMScheduler
from diffusers.utils import export_to_gif

# Load the motion adapter
adapter = MotionAdapter.from_pretrained("guoyww/animatediff-motion-adapter-v1-5-2")

# load SD 1.5 based finetuned model
model_id = "SG161222/Realistic_Vision_V5.1_noVAE"
pipe = AnimateDiffPipeline.from_pretrained(model_id, motion_adapter=adapter)
scheduler = DDIMScheduler.from_pretrained(
    model_id, subfolder="scheduler", clip_sample=False, timestep_spacing="linspace", steps_offset=1
)
pipe.scheduler = scheduler

# enable memory savings
pipe.enable_vae_slicing()
pipe.enable_model_cpu_offload()

output = pipe(
    prompt=(
        "masterpiece, bestquality, highlydetailed, ultradetailed, sunset, "
        "orange sky, warm lighting, fishing boats, ocean waves seagulls, "
        "rippling water, wharf, silhouette, serene atmosphere, dusk, evening glow, "
        "golden hour, coastal landscape, seaside scenery"
    ),
    negative_prompt="bad quality, worse quality",
    num_frames=16,
    guidance_scale=7.5,
    num_inference_steps=25,
    generator=torch.Generator("cpu").manual_seed(42),
)
frames = output.frames[0]
export_to_gif(frames, "animation.gif")

You can convert an existing 2D UNet into a UNetMotionModel:

from diffusers import MotionAdapter, UNetMotionModel, UNet2DConditionModel

unet = UNetMotionModel()

# Load from an existing 2D UNet and MotionAdapter
unet2D = UNet2DConditionModel.from_pretrained("SG161222/Realistic_Vision_V5.1_noVAE", subfolder="unet")
motion_adapter = MotionAdapter.from_pretrained("guoyww/animatediff-motion-adapter-v1-5-2")

# load motion adapter here
unet_motion = UNetMotionModel.from_unet2d(unet2D, motion_adapter: Optional = None)

# Or load motion modules after init
unet_motion.load_motion_modules(motion_adapter)

# freeze all 2D UNet layers except for the motion modules for finetuning
unet_motion.freeze_unet2d_params()

# Save only motion modules
unet_motion.save_motion_module(<path to save model>, push_to_hub=True)

AnimateDiff also comes with motion LoRA modules, letting you control subtleties:

import torch
from diffusers import MotionAdapter, AnimateDiffPipeline, DDIMScheduler
from diffusers.utils import export_to_gif

# Load the motion adapter
adapter = MotionAdapter.from_pretrained("guoyww/animatediff-motion-adapter-v1-5-2")
# load SD 1.5 based finetuned model
model_id = "SG161222/Realistic_Vision_V5.1_noVAE"
pipe = AnimateDiffPipeline.from_pretrained(model_id, motion_adapter=adapter)
pipe.load_lora_weights("guoyww/animatediff-motion-lora-zoom-out", adapter_name="zoom-out")

scheduler = DDIMScheduler.from_pretrained(
    model_id, subfolder="scheduler", clip_sample=False, timestep_spacing="linspace", steps_offset=1
)
pipe.scheduler = scheduler

# enable memory savings
pipe.enable_vae_slicing()
pipe.enable_model_cpu_offload()

output = pipe(
    prompt=(
        "masterpiece, bestquality, highlydetailed, ultradetailed, sunset, "
        "orange sky, warm lighting, fishing boats, ocean waves seagulls, "
        "rippling water, wharf, silhouette, serene atmosphere, dusk, evening glow, "
        "golden hour, coastal landscape, seaside scenery"
    ),
    negative_prompt="bad quality, worse quality",
    num_frames=16,
    guidance_scale=7.5,
    num_inference_steps=25,
    generator=torch.Generator("cpu").manual_seed(42),
)
frames = output.frames[0]
export_to_gif(frames, "animation.gif")

Check out the documentation to learn more.

PEFT 🤝 Diffusers

There are many adapters (LoRA, for example) trained in different styles to achieve different effects. You can even combine multiple adapters to create new and unique images. With the 🤗 PEFT integration in 🤗 Diffusers, it is really easy to load and manage adapters for inference.

Here is an example of combining multiple LoRAs using this new integration:

from diffusers import DiffusionPipeline
import torch

pipe_id = "stabilityai/stable-diffusion-xl-base-1.0"
pipe = DiffusionPipeline.from_pretrained(pipe_id, torch_dtype=torch.float16).to("cuda")

# Load LoRA 1.
pipe.load_lora_weights("CiroN2022/toy-face", weight_name="toy_face_sdxl.safetensors", adapter_name="toy")
# Load LoRA 2.
pipe.load_lora_weights("nerijs/pixel-art-xl", weight_name="pixel-art-xl.safetensors", adapter_name="pixel")

# Combine the adapters.
pipe.set_adapters(["pixel", "toy"], adapter_weights=[0.5, 1.0])

# Perform inference.
prompt = "toy_face of a hacker with a hoodie, pixel art"
image = pipe(
    prompt, num_inference_steps=30, cross_attention_kwargs={"scale": 1.0}, generator=torch.manual_seed(0)
).images[0]
image

Refer to the documentation to learn more.

Community components with community pipelines

We have had support for community pipelines for a while now. This enables fast integration for pipelines we cannot directly integrate within the core codebase of the library. However, community pipelines always rely on the building blocks from Diffusers, which can be restrictive for advanced use cases.

To elevate this, we’re elevating community pipelines with community components starting this release 🤗 By specifying trust_remote_code=True and writing the pipeline repository in a specific way, users can customize their pipeline and component code as flexibly as possible:

from diffusers import DiffusionPipeline
import torch

pipeline = DiffusionPipeline.from_pretrained(
    "<change-username>/<change-id>", trust_remote_code=True, torch_dtype=torch.float16
).to("cuda")

prompt = "hello"

# Text embeds
prompt_embeds, negative_embeds = pipeline.encode_prompt(prompt)

# Keyframes generation (8x64x40, 2fps)
video_frames = pipeline(
    prompt_embeds=prompt_embeds,
    negative_prompt_embeds=negative_embeds,
    num_frames=8,
    height=40,
    width=64,
    num_inference_steps=2,
    guidance_scale=9.0,
    output_type="pt"
).frames

Refer to the [documentation](https://huggingface.co/docs/diffusers/main/en/using-diffusers/custom_pipeline_overview#commu...

Patch Release: Fix Lora fusing/unfusing

• [Lora] fix lora fuse unfuse in #5003 by @patrickvonplaten

Patch Release: Fix LoRA attention processor for xformers.

• [LoRA, Xformers] Fix xformers lora by @patrickvonplaten in #5201

Patch Release: CPU offloading + Lora load/Text inv load & Multi Adapter

• [Textual inversion] Refactor textual inversion to make it cleaner by @patrickvonplaten in #5076
• t2i Adapter community member fix by @williamberman in #5090
• remove unused adapter weights in constructor by @williamberman in #5088
• [LoRA] don't break offloading for incompatible lora ckpts. by @sayakpaul in #5085