[SANA-Video] Adding 5s pre-trained 480p SANA-Video inference

[lawrence-cj]

What does this PR do?

This PR add SANA-Video, a new text/image-to-video model from NVIDIA
Paper
Project
HF weight

Cc: @yiyixuxu @asomoza @sayakpaul

import torch
from diffusers import SanaPipeline, SanaVideoPipeline, UniPCMultistepScheduler, DPMSolverMultistepScheduler
from diffusers import AutoencoderKLWan
from diffusers.utils import export_to_video


model_id = "Efficient-Large-Model/SANA-Video_2B_480p_diffusers"
pipe = SanaVideoPipeline.from_pretrained(model_id, torch_dtype=torch.bfloat16)
# pipe.scheduler = UniPCMultistepScheduler.from_config(pipe.scheduler.config, flow_shift=8.0)
# pipe.scheduler = DPMSolverMultistepScheduler.from_config(pipe.scheduler.config, flow_shift=8.0)
pipe.vae.to(torch.float32)
pipe.text_encoder.to(torch.bfloat16)
pipe.to("cuda")
model_score = 30

prompt = "Evening, backlight, side lighting, soft light, high contrast, mid-shot, centered composition, clean solo shot, warm color. A young Caucasian man stands in a forest, golden light glimmers on his hair as sunlight filters through the leaves. He wears a light shirt, wind gently blowing his hair and collar, light dances across his face with his movements. The background is blurred, with dappled light and soft tree shadows in the distance. The camera focuses on his lifted gaze, clear and emotional."
negative_prompt = "A chaotic sequence with misshapen, deformed limbs in heavy motion blur, sudden disappearance, jump cuts, jerky movements, rapid shot changes, frames out of sync, inconsistent character shapes, temporal artifacts, jitter, and ghosting effects, creating a disorienting visual experience."
motion_prompt = f" motion score: {model_score}."
prompt = prompt + motion_prompt

video = pipe(
    prompt=prompt,
    negative_prompt=negative_prompt,
    height=480,
    width=832,
    frames=81,
    guidance_scale=6,
    num_inference_steps=50,
    generator=torch.Generator(device="cuda").manual_seed(42),
).frames[0]

export_to_video(video, "sana_video.mp4", fps=16)

Results:

sana_v2.mp4

[dg845]

I think exposing an interface like VaeImageProcessor.resize:

diffusers/src/diffusers/image_processor.py

Lines 468 to 474 in dcfb18a

	def resize(
	self,
	image: Union[PIL.Image.Image, np.ndarray, torch.Tensor],
	height: int,
	width: int,
	resize_mode: str = "default", # "default", "fill", "crop"
	) -> Union[PIL.Image.Image, np.ndarray, torch.Tensor]:

would be more robust, since different video preprocessing pipelines will probably make different choices here. Not blocking, on the diffusers side we can follow up to support more video pipelines here.

[lawrence-cj]

OK, I would let u guys help to finish this part. Thanks!!

[dg845]

Thanks for the PR! Would you be able to add tests and docs? We can help with both, especially the tests, but for the docs it may be harder for us as we are not as familiar with the intricacies of the model.

• Documentation example (Wan): https://github.com/huggingface/diffusers/blob/main/docs/source/en/api/pipelines/wan.md
• Model tests example (WanTransformer3DModel): https://github.com/huggingface/diffusers/blob/main/tests/models/transformers/test_models_transformer_wan.py
• Pipeline tests example (WanPipeline): https://github.com/huggingface/diffusers/blob/main/tests/pipelines/wan/test_wan.py

[lawrence-cj]

I have added markdown we need.

THANKS so much for your support!
@yiyixuxu @dg845

[lawrence-cj]

I also added two test cases for you for reference. Please feel free to modify them

d98f93c

[dg845]

Thanks for the follow up changes! I have made some suggestions that should help the Sana Video pipeline tests pass.

Sorry for all the small change requests, but could you also do the following?

1. Can you run the following to make sure that the CI code quality check is green?

make style
make quality
make fix-copies

2. Can you add the new Sana Video markdown docs to docs/source/en/_toctree.yml? For reference, here is how the Sana pipeline docs were added:

   diffusers/docs/source/en/_toctree.yml

   Lines 562 to 563 in dcfb18a

   	- local: api/pipelines/sana
   	title: Sana

   This change will help the docs build correctly.

[lawrence-cj]

Thanks for the follow up changes! I have made some suggestions that should help the Sana Video pipeline tests pass.

Sorry for all the small change requests, but could you also do the following?

1. Can you run the following to make sure that the CI code quality check is green?

make style
make quality
make fix-copies

2. Can you add the new Sana Video markdown docs to docs/source/en/_toctree.yml? For reference, here is how the Sana pipeline docs were added:

   diffusers/docs/source/en/_toctree.yml

   Lines 562 to 563 in dcfb18a

   	- local: api/pipelines/sana
   	title: Sana

   
   This change will help the docs build correctly.

Done! Let's test it.

[dg845]

This will cause an error when building the docs since the api/models/sana_video_transformer3d file doesn't currently exist. Could you add a markdown doc for the transformer as well? For reference, here is the documentation for SanaTransformer2DModel: https://github.com/huggingface/diffusers/blob/main/docs/source/en/api/models/sana_transformer2d.md

[lawrence-cj]

Done.