import math
import os
from glob import glob
from pathlib import Path
from typing import Optional
import cv2
import numpy as np
import torch
from einops import rearrange, repeat
from fire import Fire
from omegaconf import OmegaConf
from PIL import Image
from torchvision.transforms import ToTensor
from scripts.util.detection.nsfw_and_watermark_dectection import \
DeepFloydDataFiltering
from sgm.inference.helpers import embed_watermark
from sgm.util import default, instantiate_from_config
def sample(
input_path: str = "assets/test_image.png", # Can either be image file or folder with image files
num_frames: Optional[int] = None,
num_steps: Optional[int] = None,
version: str = "svd",
fps_id: int = 6,
motion_bucket_id: int = 127,
cond_aug: float = 0.02,
seed: int = 23,
decoding_t: int = 14, # Number of frames decoded at a time! This eats most VRAM. Reduce if necessary.
device: str = "cuda",
output_folder: Optional[str] = None,
):
"""
Simple script to generate a single sample conditioned on an image `input_path` or multiple images, one for each
image file in folder `input_path`. If you run out of VRAM, try decreasing `decoding_t`.
"""
if version == "svd":
num_frames = default(num_frames, 14)
num_steps = default(num_steps, 25)
output_folder = default(output_folder, "outputs/simple_video_sample/svd/")
model_config = "scripts/sampling/configs/svd.yaml"
elif version == "svd_xt":
num_frames = default(num_frames, 25)
num_steps = default(num_steps, 30)
output_folder = default(output_folder, "outputs/simple_video_sample/svd_xt/")
model_config = "scripts/sampling/configs/svd_xt.yaml"
elif version == "svd_image_decoder":
num_frames = default(num_frames, 14)
num_steps = default(num_steps, 25)
output_folder = default(
output_folder, "outputs/simple_video_sample/svd_image_decoder/"
)
model_config = "scripts/sampling/configs/svd_image_decoder.yaml"
elif version == "svd_xt_image_decoder":
num_frames = default(num_frames, 25)
num_steps = default(num_steps, 30)
output_folder = default(
output_folder, "outputs/simple_video_sample/svd_xt_image_decoder/"
)
model_config = "scripts/sampling/configs/svd_xt_image_decoder.yaml"
else:
raise ValueError(f"Version {version} does not exist.")
model, filter = load_model(
model_config,
device,
num_frames,
num_steps,
)
torch.manual_seed(seed)
path = Path(input_path)
all_img_paths = []
if path.is_file():
if any([input_path.endswith(x) for x in ["jpg", "jpeg", "png"]]):
all_img_paths = [input_path]
else:
raise ValueError("Path is not valid image file.")
elif path.is_dir():
all_img_paths = sorted(
[
f
for f in path.iterdir()
if f.is_file() and f.suffix.lower() in [".jpg", ".jpeg", ".png"]
]
)
if len(all_img_paths) == 0:
raise ValueError("Folder does not contain any images.")
else:
raise ValueError
for input_img_path in all_img_paths:
with Image.open(input_img_path) as image:
if image.mode == "RGBA":
image = image.convert("RGB")
w, h = image.size
if h % 64 != 0 or w % 64 != 0:
width, height = map(lambda x: x - x % 64, (w, h))
image = image.resize((width, height))
print(
f"WARNING: Your image is of size {h}x{w} which is not divisible by 64. We are resizing to {height}x{width}!"
)
image = ToTensor()(image)
image = image * 2.0 - 1.0
image = image.unsqueeze(0).to(device)
H, W = image.shape[2:]
assert image.shape[1] == 3
F = 8
C = 4
shape = (num_frames, C, H // F, W // F)
if (H, W) != (576, 1024):
print(
"WARNING: The conditioning frame you provided is not 576x1024. This leads to suboptimal performance as model was only trained on 576x1024. Consider increasing `cond_aug`."
)
if motion_bucket_id > 255:
print(
"WARNING: High motion bucket! This may lead to suboptimal performance."
)
if fps_id < 5:
print("WARNING: Small fps value! This may lead to suboptimal performance.")
if fps_id > 30:
print("WARNING: Large fps value! This may lead to suboptimal performance.")
value_dict = {}
value_dict["motion_bucket_id"] = motion_bucket_id
value_dict["fps_id"] = fps_id
value_dict["cond_aug"] = cond_aug
value_dict["cond_frames_without_noise"] = image
value_dict["cond_frames"] = image + cond_aug * torch.randn_like(image)
value_dict["cond_aug"] = cond_aug
with torch.no_grad():
with torch.autocast(device):
batch, batch_uc = get_batch(
get_unique_embedder_keys_from_conditioner(model.conditioner),
value_dict,
[1, num_frames],
T=num_frames,
device=device,
)
c, uc = model.conditioner.get_unconditional_conditioning(
batch,
batch_uc=batch_uc,
force_uc_zero_embeddings=[
"cond_frames",
"cond_frames_without_noise",
],
)
for k in ["crossattn", "concat"]:
uc[k] = repeat(uc[k], "b ... -> b t ...", t=num_frames)
uc[k] = rearrange(uc[k], "b t ... -> (b t) ...", t=num_frames)
c[k] = repeat(c[k], "b ... -> b t ...", t=num_frames)
c[k] = rearrange(c[k], "b t ... -> (b t) ...", t=num_frames)
randn = torch.randn(shape, device=device)
additional_model_inputs = {}
additional_model_inputs["image_only_indicator"] = torch.zeros(
2, num_frames
).to(device)
additional_model_inputs["num_video_frames"] = batch["num_video_frames"]
def denoiser(input, sigma, c):
return model.denoiser(
model.model, input, sigma, c, **additional_model_inputs
)
samples_z = model.sampler(denoiser, randn, cond=c, uc=uc)
model.en_and_decode_n_samples_a_time = decoding_t
samples_x = model.decode_first_stage(samples_z)
samples = torch.clamp((samples_x + 1.0) / 2.0, min=0.0, max=1.0)
os.makedirs(output_folder, exist_ok=True)
base_count = len(glob(os.path.join(output_folder, "*.mp4")))
video_path = os.path.join(output_folder, f"{base_count:06d}.mp4")
writer = cv2.VideoWriter(
video_path,
cv2.VideoWriter_fourcc(*"MP4V"),
fps_id + 1,
(samples.shape[-1], samples.shape[-2]),
)
samples = embed_watermark(samples)
samples = filter(samples)
vid = (
(rearrange(samples, "t c h w -> t h w c") * 255)
.cpu()
.numpy()
.astype(np.uint8)
)
for frame in vid:
frame = cv2.cvtColor(frame, cv2.COLOR_RGB2BGR)
writer.write(frame)
writer.release()
def get_unique_embedder_keys_from_conditioner(conditioner):
return list(set([x.input_key for x in conditioner.embedders]))
def get_batch(keys, value_dict, N, T, device):
batch = {}
batch_uc = {}
for key in keys:
if key == "fps_id":
batch[key] = (
torch.tensor([value_dict["fps_id"]])
.to(device)
.repeat(int(math.prod(N)))
)
elif key == "motion_bucket_id":
batch[key] = (
torch.tensor([value_dict["motion_bucket_id"]])
.to(device)
.repeat(int(math.prod(N)))
)
elif key == "cond_aug":
batch[key] = repeat(
torch.tensor([value_dict["cond_aug"]]).to(device),
"1 -> b",
b=math.prod(N),
)
elif key == "cond_frames":
batch[key] = repeat(value_dict["cond_frames"], "1 ... -> b ...", b=N[0])
elif key == "cond_frames_without_noise":
batch[key] = repeat(
value_dict["cond_frames_without_noise"], "1 ... -> b ...", b=N[0]
)
else:
batch[key] = value_dict[key]
if T is not None:
batch["num_video_frames"] = T
for key in batch.keys():
if key not in batch_uc and isinstance(batch[key], torch.Tensor):
batch_uc[key] = torch.clone(batch[key])
return batch, batch_uc
def load_model(
config: str,
device: str,
num_frames: int,
num_steps: int,
):
config = OmegaConf.load(config)
if device == "cuda":
config.model.params.conditioner_config.params.emb_models[
0
].params.open_clip_embedding_config.params.init_device = device
config.model.params.sampler_config.params.num_steps = num_steps
config.model.params.sampler_config.params.guider_config.params.num_frames = (
num_frames
)
if device == "cuda":
with torch.device(device):
model = instantiate_from_config(config.model).to(device).eval()
else:
model = instantiate_from_config(config.model).to(device).eval()
filter = DeepFloydDataFiltering(verbose=False, device=device)
return model, filter
if __name__ == "__main__":
Fire(sample)