README-YTdownloader.md

Python youtube video downloader

This code consists of a python script which allows us to easily download YouTube videos/audio by passing its URL via the command line.

Content

Project files

• youtube.py: the script's code
• aux_functions: contains multiple functions used to customize the output color and animations.

Default output

By default, the script outputs the file to: D:\YouTube, you can simply change it by modifying the path variable.

Execution

You can download the code and easily set the path as a system environmental variable in order to be able to run the script from anywhere on your computer.

How to run without the path modified:

1. Go to your script's directory, mine is:

cd /d d:\WebDev\Python\Scripts

2. Run the following command:
3. Select wether you want to download the video or audio.

python youtube.py https://www.youtube.com/watch?v=-mwpoE0x0JQ

How to run with the path modified:

1. Simply run the following command:

youtube.py https://www.youtube.com/watch?v=-mwpoE0x0JQ

2. Select wether you want to download the video or audio.

Functions

Conti

This auxiliar function writes character by character and gives the program a very nice looking.

def conti(s):
    for ch in s:
        sys.stdout.write(ch)
        sys.stdout.flush()
        time.sleep(0.02)
    print("\n")

Bcolors

This class gives us the ability to change the output colors by calling its elements.

class bcolors:
    HEADER = '\033[95m'
    OKBLUE = '\033[94m'
    OKCYAN = '\033[96m'
    OKGREEN = '\033[92m'
    WARNING = '\033[93m'
    FAIL = '\033[91m'
    ENDC = '\033[0m'
    BOLD = '\033[1m'
    UNDERLINE = '\033[4m'

aux_functions.py

import readchar
import sys
import time


def conti(s):
    for ch in s:
        sys.stdout.write(ch)
        sys.stdout.flush()
        time.sleep(0.02)
    print("\n")


class bcolors:
    HEADER = '\033[95m'
    OKBLUE = '\033[94m'
    OKCYAN = '\033[96m'
    OKGREEN = '\033[92m'
    WARNING = '\033[93m'
    FAIL = '\033[91m'
    ENDC = '\033[0m'
    BOLD = '\033[1m'
    UNDERLINE = '\033[4m'
def press_to_leave():
    conti(f"{bcolors.WARNING}Press any key to leave.{bcolors.ENDC}")
    k = readchar.readchar()

youtube.py

import pytube.exceptions
from pytube import YouTube
from sys import argv
from aux_functions import *

import subprocess


def downloader():
    link = argv[1]  # video link passed as argument via command line
    try:

        yt = YouTube(link)  # object we're going to work with

        path = "D:\YouTube"  # Folder where we're going to save out video/audio
        done = False

        # Menu
        conti("Vídeo title: " + yt.title)
        conti("1- Download video at maximum resolution.")
        conti("2- Download audio only.")
        conti("0- Exit program.")

        # We make sure the user introduces a valid option
        while not done:
            option = int(input("\tR: "))
            if option == 1:
                yd = yt.streams.get_highest_resolution()
                type = "video"
                done = True
            elif option == 2:
                yd = yt.streams.get_audio_only("mp4")
                type = "audio"
                done = True
            elif option == 0:
                exit()
            else:
                conti(f"{bcolors.FAIL}INCORRECT OPTION, TRY AGAIN{bcolors.ENDC}")

        conti(f"{bcolors.OKBLUE}DOWNLOADING {type}...{bcolors.ENDC}")
        yd.download(path)

        conti(f"{bcolors.OKGREEN}Your {type} has been downloaded to folder: {path}{bcolors.ENDC}")
        conti(f"Press {bcolors.BOLD}o{bcolors.ENDC} to open file browser, else to exit.")
        op = input()

        if op == "o":
            subprocess.Popen(f'explorer /select,"{path}"')
        else:
            exit()
    except pytube.exceptions.RegexMatchError:
        conti(f"{bcolors.FAIL}Video not found{bcolors.ENDC}")

if __name__ == "__main__":
    downloader()