Preprocessing Youtube-VOS

Download raw images and annotations (website, 8.3G)

python download_from_gdrive.py https://drive.google.com/uc?id=18S_db1cFgSD1RsMsofJLkd6SyR9opk6a --output train.zip
unzip ./train.zip
python parse_ytb_vos.py  # really slow

Crop & Generate data info (10 min)

#python par_crop.py [crop_size] [num_threads]
python par_crop.py 511 12
python gen_json.py