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lerobot-clone/src/lerobot/configs/dataset.py

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Python

# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Shared dataset recording configuration used by both ``lerobot-record`` and ``lerobot-rollout``."""
from dataclasses import dataclass, field
from datetime import datetime
from pathlib import Path
@dataclass
class DatasetRecordConfig:
# Dataset identifier. By convention it should match '{hf_username}/{dataset_name}' (e.g. `lerobot/test`).
repo_id: str = ""
# A short but accurate description of the task performed during the recording (e.g. "Pick the Lego block and drop it in the box on the right.")
single_task: str = ""
# Root directory where the dataset will be stored (e.g. 'dataset/path'). If None, defaults to $HF_LEROBOT_HOME/repo_id.
root: str | Path | None = None
# Limit the frames per second.
fps: int = 30
# Number of seconds for data recording for each episode.
episode_time_s: int | float = 60
# Number of seconds for resetting the environment after each episode.
reset_time_s: int | float = 60
# Number of episodes to record.
num_episodes: int = 50
# Encode frames in the dataset into video
video: bool = True
# Upload dataset to Hugging Face hub.
push_to_hub: bool = True
# Upload on private repository on the Hugging Face hub.
private: bool = False
# Add tags to your dataset on the hub.
tags: list[str] | None = None
# Number of subprocesses handling the saving of frames as PNG. Set to 0 to use threads only;
# set to ≥1 to use subprocesses, each using threads to write images. The best number of processes
# and threads depends on your system. We recommend 4 threads per camera with 0 processes.
# If fps is unstable, adjust the thread count. If still unstable, try using 1 or more subprocesses.
num_image_writer_processes: int = 0
# Number of threads writing the frames as png images on disk, per camera.
# Too many threads might cause unstable teleoperation fps due to main thread being blocked.
# Not enough threads might cause low camera fps.
num_image_writer_threads_per_camera: int = 4
# Number of episodes to record before batch encoding videos
# Set to 1 for immediate encoding (default behavior), or higher for batched encoding
video_encoding_batch_size: int = 1
# Video codec for encoding videos. Options: 'h264', 'hevc', 'libsvtav1', 'auto',
# or hardware-specific: 'h264_videotoolbox', 'h264_nvenc', 'h264_vaapi', 'h264_qsv'.
# Use 'auto' to auto-detect the best available hardware encoder.
vcodec: str = "libsvtav1"
# Enable streaming video encoding: encode frames in real-time during capture instead
# of writing PNG images first. Makes save_episode() near-instant. More info in the documentation: https://huggingface.co/docs/lerobot/streaming_video_encoding
streaming_encoding: bool = False
# Maximum number of frames to buffer per camera when using streaming encoding.
# ~1s buffer at 30fps. Provides backpressure if the encoder can't keep up.
encoder_queue_maxsize: int = 30
# Number of threads per encoder instance. None = auto (codec default).
# Lower values reduce CPU usage, maps to 'lp' (via svtav1-params) for libsvtav1 and 'threads' for h264/hevc..
encoder_threads: int | None = None
# Rename map for the observation to override the image and state keys
rename_map: dict[str, str] = field(default_factory=dict)
def __post_init__(self) -> None:
if self.repo_id:
timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
self.repo_id = f"{self.repo_id}_{timestamp}"