Multithreaded file transfer from multiple volumes

[skoobi]

I've written a script that copies .mp4 files from multiple volumes on the mac, which all works as intended, but am looking at improving the speeds and was looking into using multiple threads to see if that would improve things. Im reasonably new to Python and only write scripts to make my life easier so I'm not too familiar with multithreading etc.

A brief overview of what I'm doing and trying to achieve:
We film in 360 where it saves 8k video files from 6 cameras to 6 SD cards and then 1 SD card for the metadata. I then plug those 7 SD cards into the MacBook via a USB 3.0 hub and import using the Cameras software. The issue I get here is that it takes around 2hrs to transfer 225GB of data. After writing some code to run through the cards copying the files one by one, I managed to get this down to 47min for 225GB.

I'm just wondering if i can get it any quicker?

Cheers

Heres the code I have at moment:

import os
import shutil
import time
from itertools import chain
from concurrent.futures import ThreadPoolExecutor

local_directory_path = '/Users/chris/Desktop/Filming/'
sd_card_paths = ('/Volumes/Untitled', '/Volumes/Untitled 1', '/Volumes/Untitled 2',
                 '/Volumes/Untitled 3', '/Volumes/Untitled 4', '/Volumes/Untitled 4',
                 '/Volumes/Untitled 5', '/Volumes/Untitled 6')


def convert(seconds):
    # converts seconds into minutes

    seconds = seconds % (24 * 3600)
    hour = seconds // 3600
    seconds %= 3600
    minutes = seconds // 60
    seconds %= 60

    return "%d:%02d:%02d" % (hour, minutes, seconds)


def transfer_all_files():
    # Walk through the folders on the sd card

    for path, dirs, files in chain.from_iterable(os.walk(path) for path in sd_card_paths):

        for file_name in files:

            # Set the paths variables for the source and destination
            src_path = os.path.join(path, file_name)
            dst_folder = local_directory_path + path.split(os.path.sep)[-1]

            # Check if the folder exists and create folder if not
            if not os.path.exists(dst_folder):
                os.mkdir(dst_folder)

            if not file_name == '.pro_suc':

                print(f"Copying file: {path}/{file_name}")

                dst_path = local_directory_path + path.split(os.path.sep)[-1] + '/' + file_name
                shutil.copy(src_path, dst_path)


def verify_copied_files():
    # Will check the file on the SD card and compare the sizes

    print('Verifying all transferred files')
    pass


if __name__ == '__main__':
    startTime = time.time()
    transfer_all_files()
    verify_copied_files()
    executionTime = (time.time() - startTime)
    print('Copied in: ' + convert(executionTime))