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VALOR: Vision-Audio-Language Omni-Perception Pretraining Model and Dataset

• This is the official repository of VALOR which provides training&testing code and pretraining checkpoints.
• VALOR-32K dataset (annotation) can be downloaded from project page. Raw videos can be downloaded from YouTube.
• VALOR-1M will be released after paper is accepted.
• Paper w audio files embeded in PDF can be found on project page.
• We have proposed a stronger vision-audio-subtitle-text omni-modality foundation model (VAST), Paper, Github page.
• We have proposed a new strong video-language pretraining model (COSA), Paper, Code.

Building Environment

• VALOR is implemented based on Pytorch. We use pytorch-1.9.0 and cuda-11.1. Other version could be also compatible.

pip install torch==1.9.0+cu111 torchvision==0.10.0+cu111 torchaudio==0.9.0 -f https://download.pytorch.org/whl/torch_stable.html

• build apex.

cd apex
pip install -v --no-cache-dir --global-option="--cpp_ext" --global-option="--cuda_ext" ./

• install needed packages.

sh preinstall.sh

Download Checkpoints

• pretrained_weights (BERT,CLIP,VideoSwin). Put pretrained_weights dir under main path. (VALOR/pretrained_weights)
• VALOR models.

Put VALOR-base and VALOR-large under the output dir. (VALOR/output/VALOR-base, VALOR/output/VALOR-large)

Prepare Datasets

VALOR is pretrained and tested on multiple vision-language, audio-language and audiovisual-language datasets. e.g. PRETRAIN: VALOR-1M, WebVid-2.5M, CC-3M (VALOR-base) TEST: VALOR-32K, MSRVTT, MSVD, DiDeMo, LSMDC, ActivityNet, VATEX, AudioCaps, ClothoV1, TGIF-Frame, MSCOCO, VQAV2... We here take MSRVTT as an example to show the data processing procedures, other datasets take a similar way.

• make dir VALOR/datasets/MSRVTT
• download raw videos from website, and put them in MSRVTT/raw_videos
• extract video frames (.jpg) and audio files (.wav). Utilizing utils/extract_frame_and_wav_multiprocess.py (Note: VALOR use this offline extracted frames and audios for training and testing for it's fast I/O speed. You may adjust to read raw videos via decord library, and need to change VideoMapper and AudioMapper classes in data/data.py.)
• prepare id_files (standardsplit_train_id.json, standardsplit_test_id.json, 1KAsplit_train_id.json, 1KAsplit_test_id.json). The format is List(Str) ['video0', 'video1', ...]. The former two are for video captioning and video qa, while the latter two are for video retrieval.
• prepare txt_mapper.json. txt_mapper files map videoIDs to its descriptions. Format {'video0':['desc1','desc2',...'desc20']}. For VideoQA task, the format is {'video0':[{'question':'what color is ...?', 'answer':'red'},{'question':'Is the boy ...?', 'answer':'yes'}]}
• prepare caption_annotation.json. This file is used for computing caption metrics. format: [{'video_id':'video0','caption','A boy is ...'}, {'video_id':'video1','caption','A girl is ...'}]

The processed dataset path should be as follows:

   ├── datasets
   │   ├── msrvtt
   │   │   ├── raw_videos
   │   │   │    ├── video0.mp4
   │   │   │    └── video1.mp4
   │   │   ├── frames_fps4
   │   │   │    ├── video0
   │   │   │    │   ├──img_0001.jpg
   │   │   │    │   └──img_0002.jpg
   │   │   │    └── video1
   │   │   │    │   ├──img_0001.jpg
   │   │   │    │   └──img_0002.jpg
   │   │   ├── audio_22050hz
   │   │   │    ├── video1.wav
   │   │   │    └── video3.wav
   │   │   ├── standardsplit_train_id.json
   │   │   ├── standardsplit_test_id.json
   │   │   ├── 1KAsplit_train_id.json
   │   │   ├── 1KAsplit_test_id.json
   │   │   ├── txt_mapper.json
   │   │   ├── txt_mapper_1kAsplit_test.json    
   │   │   ├── txt_mapper_vqa.json    
   │   │   └── caption_annotation.json    

We provide processed json files for most finetuneing datasets here, and you only need to download and extract raw videos of each dataset.

Finetune Model

• finetune retrieval tasks

sh scripts/finetune_ret.sh $pretrain_path(output/VALOR_base)

• finetune captioning tasks

sh scripts/finetune_cap.sh $pretrain_path(output/VALOR_base)

• finetune QA tasks

sh scripts/finetune_qa.sh $pretrain_path(output/VALOR_base)

The finetuning output path will be the subdir of $pretrain_path

Test Model

For example, the cmd for finetuning retrieval model in scripts/finetune_ret.sh is as follows:

CUDA_VISIBLE_DEVICES=0,1,2,3,4,5,6,7 python -m torch.distributed.launch --nproc_per_node=8   --master_port 32711 ./train.py \
--pretrain_dir $basedir \
--config ./config/fast-retrieval-msrvtt.json \
--output_dir $basedir'/ret-msrvtt-lr2e-5-bs64-epoch5'   \
--learning_rate 2e-5  \
--train_video_sample_num 4 \
--test_video_sample_num 8  \
--save_best true \

if you want to test model, just add following two rows to the cmd:

--zero_shot \
--checkpoint $checkpoint_save_path(.pt)

Pretrain Model

sh scripts/pretrain.sh

Inference

For QA task

python inference.py --video_path $VIDEOPATH --task 'qa%tva' --model_dir $MODELDIR --question 'what is in the video'

For caption task

python inference.py --video_path $VIDEOPATH --task 'cap%tva' --model_dir $MODELDIR 

Customize

VALOR's framework is easy to expand new tasks/datasets. what you need to do is

1. prepare dataset as illustrated above
2. write config file (copy a config file and change 'data_cfg')

• In development stage, you can simply use cmd to overwrite config file. The most important args are : --learning_rate --train_batch_size --train_video_sample_num --test_video_sample_num --train_audio_sample_num --test_audio_sample_num --video_resolution --train_epoch --train_task --test_task

• To control task and used modality group, you can rewrite train_task by 'task%modality_group1%modality_group2' For example: finetuning text-to-audio retrieval 'ret%ta' finetuning text-to-video retrieval 'ret%tv' or 'ret%tva'

• Other settings --fp16 (default: True) --checkpointing (default: False)

Citation

If you find this code useful for your research, please consider citing:

@article{chen2023valor,
  title={VALOR: Vision-Audio-Language Omni-Perception Pretraining Model and Dataset},
  author={Chen, Sihan and He, Xingjian and Guo, Longteng and Zhu, Xinxin and Wang, Weining and Tang, Jinhui and Liu, Jing},
  journal={arXiv preprint arXiv:2304.08345},
  year={2023}
}

License

MIT -->