def METHOD_NAME(tensor, index: int) -> str:
    chunk_id = tensor.chunk_engine.chunk_id_encoder[index][0]  # videos are not tiled
    chunk_name = ChunkIdEncoder.name_from_id(chunk_id)
    chunk_commit_id, key = tensor.chunk_engine.get_chunk_commit(chunk_name)
    chunk_key = get_chunk_key(key, chunk_name, chunk_commit_id)
    return chunk_key