Towards Scalable Neural Representation for Diverse Videos (CVPR2023)

Project Page | Paper

The official repository of our paper "Towards Scalable Neural Representation for Diverse Videos".

Model Overview

Requirements

You can install the conda environment by running:

conda create -n dnerv python=3.9.7
conda activate dnerv
conda install pytorch torchvision pytorch-cuda=11.7 -c pytorch -c nvidia
pip install tensorboard
pip install tqdm dahuffman pytorch_msssim

Video Compression

We adopt the existing deep image compression models provided by CompressAI. We provide the pre-extracted ground-truth video frames and pre-compressed keyframes for UVG and UCF101 datasets in this google drive link.

Unzip it under the data/ folder and make sure the data structure is as below.

 ├── data
     └── UVG
         ├── gt
         ├── keyframe
         ├── annotation
     └── UCF101
         ├── gt
         ├── keyframe
         ├── annotation

Please note that, we split the 1024x1920 UVG videos into non-overlap 256x320 frame patches during training due to the GPU memory limitation.

Running

Training

We train our model on 4 RTX-A6000 GPUs. To compare with other state-of-the-art video compression methods, we run for 1600 epochs on UVG dataset and 800 epochs on UCF101 dataset. You can change to a smaller number of epochs to reduce the training time.

# UVG datset
python train.py --dataset UVG --model_type ${model_type} --model_size ${model_size} \
    -e 1600 -b 32 --lr 5e-4 --loss_type Fusion6 -d

# UCF101 datset
python train.py --dataset UCF101 --model_type ${model_type} --model_size ${model_size} \
    -e 800  -b 32 --lr 5e-4 --loss_type Fusion19 -d

Testing

# Evaluate model without model quantization
python train.py --dataset UVG --model_type D-NeRV --model_size M \
        --eval_only --model saved_model/UVG/D-NeRV_M.pth

# Evaluate model with model quantization
python train.py --dataset UVG --model_type D-NeRV --model_size M \
        --eval_only --model saved_model/UVG/D-NeRV_M.pth --quant_model

Dump Predicted Frames

python train.py --dataset UVG --model_type D-NeRV --model_size M \
        --eval_only --model saved_model/UVG/D-NeRV_M.pth --quant_model \
        --dump_images

Please note that, for the UVG dataset, after we splitting 1024x1920 videos into 256x320 frame patches, the PSNR/MS-SSIM results will be different from the actual PSNR/MS-SSIM of 1024x1920. Therefore, we need to dump the predicted frame patches first, and then re-evaluate the PSNR/MS-SSIM with the ground-truth 1024x1980 video frames.

PSNR/MS-SSIM vs. BPP Ratio Calculation

UVG Dataset

Results for different model configs are shown in the following table. The PSNR/MS-SSIM results are reported from the model with quantization.

Model	Arch	Model Param(M)	Entropy Encoding	Keyframe Size(Mb)	Total(Mb)	BPP	PNSR	MS-SSIM	Link
D-NeRV	XS	8.02	0.883	88.39	145.0	0.0189	34.11	0.9479	link
D-NeRV	S	15.96	0.881	88.39	200.9	0.0262	34.76	0.9540	link
D-NeRV	M	24.20	0.880	123.2	293.6	0.0383	35.74	0.9604	link
D-NeRV	L	41.66	0.877	175.1	467.3	0.0609	36.78	0.9668	link
D-NeRV	XL	69.75	0.875	254.7	730.3	0.0952	37.43	0.9719	link

UCF101 Dataset (training split)

Model	Arch	Model Param(M)	Entropy Encoding	Keyframe Size(Mb)	Total(Mb)	BPP	PNSR	MS-SSIM	Link
D-NeRV	S	21.40	0.882	481.6	632.7	0.0559	28.11	0.9153	link
D-NeRV	M	38.90	0.891	481.6	758.7	0.0671	29.15	0.9364	link
D-NeRV	L	61.30	0.891	481.6	918.3	0.0812	29.97	0.9501	link
NeRV	S	88.00	0.903		635.9	0.0562	26.78	0.9094	link
NeRV	M	105.3	0.900		758.4	0.0671	27.06	0.9177	link
NeRV	L	127.2	0.903		919.1	0.0813	27.61	0.9284	link

BPP Calculation

$BPP=\dfrac{\overbrace{\text{Model Param} * 8}^{\text{int8 quantization}} * \text{Entropy Encoding} + \text{Keyframe Size}}{\text{H} * \text{W} * \text{Num Frames}}$

For UVG dataset, H = 1024, W = 1920, Num Frames = 3900.

For UCF101 dataset, training split, H = 256, W = 320, Num Frames = 138041.

Citation

If you find our code or our paper useful for your research, please [★star] this repo and [cite] the following paper:

@inproceedings{he2023dnerv,
  title = {Towards Scalable Neural Representation for Diverse Videos},
  author = {He, Bo and Yang, Xitong and Wang, Hanyu and Wu, Zuxuan and Chen, Hao and Huang, Shuaiyi and Ren, Yixuan and Lim, Ser-Nam and Shrivastava, Abhinav},
  booktitle = {Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)},
  year = {2023},
}