| # motion_example_0506: indexed tar archive |
|
|
| Uncompressed tar shards preserving source-relative paths, including all modalities. |
| Original regular files: 1,498,378. Archive shards: 71. |
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| Wait for `REMOTE_VERIFIED.json` before treating this upload as complete. |
| No dataset license is inferred or granted by this packaging operation. |
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| ## Read a member without extracting the dataset |
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| Download the index and required tar shards, plus `pack_motion_example.py`: |
|
|
| ```python |
| from pack_motion_example import PackedMotionReader |
| reader = PackedMotionReader('/path/to/dataset_tar') |
| payload = reader.read_bytes('metadata.jsonl') # use an existing indexed path |
| reader.close() |
| ``` |
|
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| `reader.open(path)` buffers one member and supports file-object readers such as `numpy.load` / `torch.load`. Existing filename-only video decoders need an adapter. |
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| ## Restore files |
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| Keep the tar files, `archive_index.sqlite`, `archive_index.tsv`, `SHA256SUMS`, `packing_summary.json`, and both Python scripts in one folder: |
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| ```bash |
| python unpack_motion_example.py --archive-dir /path/to/dataset_tar --output-dir /path/to/new_restored_directory --workers 8 |
| ``` |
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| Restoration verifies SHA256 and refuses mismatching existing files. External symlink targets are not copied; external links require explicit opt-in. Hardlinks were materialized as independent files. Ownership is not restored; special permission bits are removed and owner access is retained. |
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