---
pretty_name: archives
tags:
- computer-vision
- 4d
- synthetic
- kubric
viewer: false
---

# archives

Original compressed Kubric-4D dataset files, mirrored from the
[Generative Camera Dolly project](https://gcd.cs.columbia.edu/#datasets).
Credit for the dataset belongs to its original creators. This repository does
not change the original data or its usage terms.

Access to data files requires a Hugging Face account and manual approval from
the repository owner. The original collection contains 20 archive files totaling
7,652,279,103,561 bytes. Uploading is in progress. Large originals are stored as
binary `.partNNN` pieces (approximately 10–16 GB each) to allow reliable
verification. Every original listed in `manifests/` has all of its pieces
available and verified. Other originals may still be pending.

After downloading the repository, restore the original compressed files with:

```bash
python3 restore_archives.py
```

The script verifies every piece and the restored original using SHA-256, and
refuses to overwrite existing originals. It does not extract archives. See
[RESTORE.md](RESTORE.md) for download commands, disk-space requirements, and
restoring a single original. The table below describes the original files
after restoration.

| Files | Count | Bytes per file |
| --- | ---: | ---: |
| `gcd_kubric4d_train.tar.gz.aa` through `.aq` | 17 | 400,000,000,000 |
| `gcd_kubric4d_train.tar.gz.ar` | 1 | 341,393,715,036 |
| `gcd_kubric4d_val.tar.gz` | 1 | 256,464,456,525 |
| `gcd_kubric4d_test.tar.gz` | 1 | 254,420,932,000 |

After restoring their `.partNNN` pieces, the 18 training files are consecutive pieces of one gzip-compressed tar stream.
They are not independently extractable. After downloading all files, they can
be joined in alphabetical order, for example:

```bash
cat gcd_kubric4d_train.tar.gz.a? | tar -xz -C /path/to/output
```

The validation and test archives can be extracted individually. Extraction is
optional and requires additional disk space; the files in this repository are
kept compressed; reconstruction reproduces the original bytes exactly.