hs272/k710-frame-lance

K710 frame-Lance shards for LeVJEPA

This is a training-oriented, frame-Lance derivative of the K710 source used by LeVJEPA. It contains 636,006 video episodes and 81,408,768 JPEG frame rows. Frames have a 384-pixel short edge and JPEG quality 90; the shard rewrite copies the existing encoded JPEG bytes without re-encoding.

Contents

• catalog.json: published only after all shards pass schema, membership, row-count, byte-size, and SHA-256 validation.
• shards/00000.lance through shards/00319.lance: 320 independently readable Lance datasets, averaging approximately 10.16 GB each.

Each shard is one exact SplitMix64 rank band. The first 16, 32, 64, 160, or 320 shards correspond exactly to the project's strict 5%, 10%, 20%, 50%, or 100% nested episode selections. Consumers should use catalog.json rather than infer episode membership from file names.

LeVJEPA access

After upload, pin the immutable Hub commit and cache complete shards on each training node's local NVMe:

export HF_TOKEN=<read-token-if-private>
export LEVJEPA_K710_SHARD_CATALOG=\
hf://datasets/<namespace>/<repo>@<commit-sha>/catalog.json
export LEVJEPA_LANCE_SHARD_CACHE=/local-nvme/$USER/levjepa-lance
export LEVJEPA_LANCE_SHARD_CACHE_MAX_SHARDS=3

Then select data=streaming/k710_sharded on the muon-amd-streaming branch. With the default three-shard cache, reserve at least 45--50 GB of node-local space to cover the steady cache plus one temporary download.

Access and rights

The upstream Kinetics release distributes annotations and source-video URLs; it does not provide a blanket license for redistribution of every underlying video. The source videos retain their respective owners' terms. Keep this derivative private unless the uploader has separately confirmed that its distribution and use comply with the applicable source terms.