Download / pre-process data

[kmonachopoulos]

Seeing from the issues, this is a common request... How do we download the video files using the .JSON file? How can we pre-process to extract the downloaded videos into the format :

data
├── audio
| ├── acoustic_guitar
│ | ├── M3dekVSwNjY.mp3
│ | ├── ...
│ ├── trumpet
│ | ├── STKXyBGSGyE.mp3
│ | ├── ...
│ ├── ...
|
└── frames
| ├── acoustic_guitar
│ | ├── M3dekVSwNjY.mp4
│ | | ├── 000001.jpg
│ | | ├── ...
│ | ├── ...
│ ├── trumpet
│ | ├── STKXyBGSGyE.mp4
│ | | ├── 000001.jpg
│ | | ├── ...
│ | ├── ...
│ ├── ...

Are there any scripts provided for these ? Thanks.