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I'm trying to download BAIR action free robot pushing dataset. I tried downloading from here. In browser, it shows its size is 30GB, but downloads some data and then fails. I tried multiple attempts with no success. Then I tried to download using wget

wget http://rail.eecs.berkeley.edu/datasets/bair_robot_pushing_dataset_v0.tar

Even with this, it shows total size is 30GB, but after downloading some 199MB, it ended saying download is complete

wget http://rail.eecs.berkeley.edu/datasets/bair_robot_pushing_dataset_v0.tar
--2019-05-16 12:30:50--  http://rail.eecs.berkeley.edu/datasets/bair_robot_pushing_dataset_v0.tar
Resolving rail.eecs.berkeley.edu (rail.eecs.berkeley.edu)... 128.32.189.73
Connecting to rail.eecs.berkeley.edu (rail.eecs.berkeley.edu)|128.32.189.73|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 32274964480 (30G) [application/x-tar]
Saving to: ‘bair_robot_pushing_dataset_v0.tar’

bair_robot_pushing_dataset_v0.tar                    0%[                                                                                                                 ] 189.95M   456KB/s    in 10m 59s 

2019-05-16 12:41:50 (295 KB/s) - Connection closed at byte 199172826. Retrying.

--2019-05-16 12:41:51--  (try: 2)  http://rail.eecs.berkeley.edu/datasets/bair_robot_pushing_dataset_v0.tar
Connecting to rail.eecs.berkeley.edu (rail.eecs.berkeley.edu)|128.32.189.73|:80... connected.
HTTP request sent, awaiting response... 416 Requested range not satisfiable

    The file is already fully retrieved; nothing to do.

Also, I found a script that downloads BAIR dataset here. But I encountered the same problem here as well.

I'm confused now. Is the dataset so small or am I doing something wrong?

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BAIR dataset can be downloaded here https://sites.google.com/berkeley.edu/robotic-interaction-datasets

Additionally, here is the code to extract data from the dataset

import datetime
import os
import time

import cv2
import numpy as np
import skvideo.io
import tensorflow as tf
from PIL import Image
from tensorflow.python.platform import gfile

def get_next_video_data(data_dir):
    filenames = gfile.Glob(os.path.join(data_dir, '*'))
    if not filenames:
        raise RuntimeError('No data files found.')

    for f in filenames:
        k = 0
        for serialized_example in tf.python_io.tf_record_iterator(f):
            example = tf.train.Example()
            example.ParseFromString(serialized_example)
            # print(example)        # To know what all features are present

            actions = np.empty((0, 4), dtype='float')
            endeffector_positions = np.empty((0, 3), dtype='float')
            frames_aux1 = []
            frames_main = []
            i = 0
            while True:
                action_name = str(i) + '/action'
                action_value = np.array(example.features.feature[action_name].float_list.value)
                if action_value.shape == (0,):      # End of frames/data
                    break
                actions = np.vstack((actions, action_value))

                endeffector_pos_name = str(i) + '/endeffector_pos'
                endeffector_pos_value = list(example.features.feature[endeffector_pos_name].float_list.value)
                endeffector_positions = np.vstack((endeffector_positions, endeffector_pos_value))

                aux1_image_name = str(i) + '/image_aux1/encoded'
                aux1_byte_str = example.features.feature[aux1_image_name].bytes_list.value[0]
                aux1_img = Image.frombytes('RGB', (64, 64), aux1_byte_str)
                aux1_arr = np.array(aux1_img.getdata()).reshape((aux1_img.size[1], aux1_img.size[0], 3))
                frames_aux1.append(aux1_arr.reshape(1, 64, 64, 3))

                main_image_name = str(i) + '/image_main/encoded'
                main_byte_str = example.features.feature[main_image_name].bytes_list.value[0]
                main_img = Image.frombytes('RGB', (64, 64), main_byte_str)
                main_arr = np.array(main_img.getdata()).reshape((main_img.size[1], main_img.size[0], 3))
                frames_main.append(main_arr.reshape(1, 64, 64, 3))
                i += 1

            np_frames_aux1 = np.concatenate(frames_aux1, axis=0)
            np_frames_main = np.concatenate(frames_main, axis=0)
            yield f, k, actions, endeffector_positions, np_frames_aux1, np_frames_main
            k = k + 1


def extract_data(data_dir, output_dir, frame_rate):
    """
    Extracts data in tfrecord format to gifs, frames and text files
    :param data_dir:
    :param output_dir:
    :param frame_rate:
    :return:
    """
    if os.path.exists(output_dir):
        if os.listdir(output_dir):
            raise RuntimeError('Directory not empty: {0}'.format(output_dir))
    else:
        os.makedirs(output_dir)

    seq_generator = get_next_video_data(data_dir)
    while True:
        try:
            _, k, actions, endeff_pos, aux1_frames, main_frames = next(seq_generator)
        except StopIteration:
            break
        video_out_dir = os.path.join(output_dir, '{0:03}'.format(k))
        os.makedirs(video_out_dir)

        # noinspection PyTypeChecker
        np.savetxt(os.path.join(video_out_dir, 'actions.csv'), actions, delimiter=',')
        # noinspection PyTypeChecker
        np.savetxt(os.path.join(video_out_dir, 'endeffector_positions.csv'), endeff_pos, delimiter=',')
        skvideo.io.vwrite(os.path.join(video_out_dir, 'aux1.gif'), aux1_frames, inputdict={'-r': str(frame_rate)})
        skvideo.io.vwrite(os.path.join(video_out_dir, 'main.gif'), main_frames, inputdict={'-r': str(frame_rate)})
        skvideo.io.vwrite(os.path.join(video_out_dir, 'aux1.mp4'), aux1_frames, inputdict={'-r': str(frame_rate)})
        skvideo.io.vwrite(os.path.join(video_out_dir, 'main.mp4'), main_frames, inputdict={'-r': str(frame_rate)})

        # Save frames
        aux1_folder_path = os.path.join(video_out_dir, 'aux1_frames')
        os.makedirs(aux1_folder_path)
        for i, frame in enumerate(aux1_frames):
            filepath = os.path.join(aux1_folder_path, 'frame_{0:03}.bmp'.format(i))
            cv2.imwrite(filepath, cv2.cvtColor(frame.astype('uint8'), cv2.COLOR_RGB2BGR))
        main_folder_path = os.path.join(video_out_dir, 'main_frames')
        os.makedirs(main_folder_path)
        for i, frame in enumerate(main_frames):
            filepath = os.path.join(main_folder_path, 'frame_{0:03}.bmp'.format(i))
            cv2.imwrite(filepath, cv2.cvtColor(frame.astype('uint8'), cv2.COLOR_RGB2BGR))
        print('Saved video: {0:03}'.format(k))


def main():
    data_dir = '../softmotion30_44k/test'
    output_dir = '../ExtractedData/test'
    frame_rate = 4
    extract_data(data_dir, output_dir, frame_rate)
    return


if __name__ == '__main__':
    print('Program started at ' + datetime.datetime.now().strftime('%d/%m/%Y %I:%M:%S %p'))
    start_time = time.time()
    main()
    end_time = time.time()
    print('Program ended at ' + datetime.datetime.now().strftime('%d/%m/%Y %I:%M:%S %p'))
    print('Execution time: ' + str(datetime.timedelta(seconds=end_time - start_time)))

References: https://github.com/edenton/svg/blob/master/data/convert_bair.py

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