i2vgen-xl

VGen is an open-source video synthesis codebase developed by the Tongyi Lab of Alibaba Group, featuring state-of-the-art video generative models. This repository includes implementations of the following methods:

• I2VGen-xl: High-quality image-to-video synthesis via cascaded diffusion models
• VideoComposer: Compositional Video Synthesis with Motion Controllability
• Hierarchical Spatio-temporal Decoupling for Text-to-Video Generation
• A Recipe for Scaling up Text-to-Video Generation with Text-free Videos
• InstructVideo: Instructing Video Diffusion Models with Human Feedback
• DreamVideo: Composing Your Dream Videos with Customized Subject and Motion
• VideoLCM: Video Latent Consistency Model
• Modelscope text-to-video technical report

VGen can produce high-quality videos from the input text, images, desired motion, desired subjects, and even the feedback signals provided. It also offers a variety of commonly used video generation tools such as visualization, sampling, training, inference, join training using images and videos, acceleration, and more.

🔥News!!!

• [2023.12] We release the high-efficiency video generation method VideoLCM
• [2023.12] We release the code and model of I2VGen-XL and the ModelScope T2V
• [2023.12] We release the T2V method HiGen and customizing T2V method DreamVideo.
• [2023.12] We write an introduction docment for VGen and compare I2VGen-XL with SVD.
• [2023.11] We release a high-quality I2VGen-XL model, please refer to the Webpage

TODO

• [x] Release the technical papers and webpage of I2VGen-XL
• [x] Release the code and pretrained models that can generate 1280x720 videos
• [ ] Release models optimized specifically for the human body and faces
• [ ] Updated version can fully maintain the ID and capture large and accurate motions simultaneously
• [ ] Release other methods and the corresponding models

Preparation

The main features of VGen are as follows:

• Expandability, allowing for easy management of your own experiments.
• Completeness, encompassing all common components for video generation.
• Excellent performance, featuring powerful pre-trained models in multiple tasks.

Installation

conda create -n vgen python=3.8
conda activate vgen
pip install torch==1.12.0+cu113 torchvision==0.13.0+cu113 torchaudio==0.12.0 --extra-index-url https://download.pytorch.org/whl/cu113
pip install -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple

Datasets

We have provided a demo dataset that includes images and videos, along with their lists in data.

Please note that the demo images used here are for testing purposes and were not included in the training.

Clone codeb

git clone https://github.com/damo-vilab/i2vgen-xl.git
cd i2vgen-xl

Getting Started with VGen

(1) Train your text-to-video model

Executing the following command to enable distributed training is as easy as that.

python train_net.py --cfg configs/t2v_train.yaml

In the t2v_train.yaml configuration file, you can specify the data, adjust the video-to-image ratio using frame_lens, and validate your ideas with different Diffusion settings, and so on.

• Before the training, you can download any of our open-source models for initialization. Our codebase supports custom initialization and grad_scale settings, all of which are included in the Pretrain item in yaml file.
• During the training, you can view the saved models and intermediate inference results in the workspace/experiments/t2v_traindirectory.

After the training is completed, you can perform inference on the model using the following command.

python inference.py --cfg configs/t2v_infer.yaml

Then you can find the videos you generated in the workspace/experiments/test_img_01 directory. For specific configurations such as data, models, seed, etc., please refer to the t2v_infer.yaml file.

(2) Run the I2VGen-XL model

(i) Download model and test data:

!pip install modelscope
from modelscope.hub.snapshot_download import snapshot_download
model_dir = snapshot_download('damo/I2VGen-XL', cache_dir='models/', revision='v1.0.0')

(ii) Run the following command:

python inference.py --cfg configs/i2vgen_xl_infer.yaml

In a few minutes, you can retrieve the high-definition video you wish to create from the workspace/experiments/test_img_01 directory. At present, we find that the current model performs inadequately on anime images and images with a black background due to the lack of relevant training data. We are consistently working to optimize it.

(3) Other methods

In preparation.

Customize your own approach

Our codebase essentially supports all the commonly used components in video generation. You can manage your experiments flexibly by adding corresponding registration classes, including ENGINE, MODEL, DATASETS, EMBEDDER, AUTO_ENCODER, DISTRIBUTION, VISUAL, DIFFUSION, PRETRAIN, and can be compatible with all our open-source algorithms according to your own needs. If you have any questions, feel free to give us your feedback at any time.

Integration of I2VGenXL with 🧨 diffusers

I2VGenXL is supported in the 🧨 diffusers library. Here's how to use it:

import torch
from diffusers import I2VGenXLPipeline
from diffusers.utils import load_image, export_to_gif

repo_id = "ali-vilab/i2vgen-xl"
pipeline = I2VGenXLPipeline.from_pretrained(repo_id, torch_dtype=torch.float16, variant="fp16").to("cuda")

image_url = "https://github.com/ali-vilab/i2vgen-xl/blob/main/data/test_images/img_0009.png?download=t