youtube_downloader.py

# Importing Libraries
import tkinter as tk
from pytube import YouTube
import customtkinter


# Creating download function

def startDownload(option):
    try:
        ytLink = link.get()
        ytObject = YouTube(ytLink, on_progress_callback=on_progress)
        if option == "highQuality":
            video = ytObject.streams.get_highest_resolution()
        elif option == "lowQuality":
            video = ytObject.streams.get_lowest_resolution()
        elif option == "audio":
            video = ytObject.streams.get_audio_only()
        else:
            return

        title.configure(text=ytObject.title, text_color="white")
        finishLabel.configure(text="")
        video.download()
        finishLabel.configure(text="Downloaded !!", text_color="green")

    except:
        finishLabel.configure(text="Download Error !!", text_color="red")


# Progress bar function

def on_progress(stream, chunk, bytes_remaining):
    total_size = stream.filesize
    bytes_download = total_size - bytes_remaining
    percentage_of_completion = bytes_download / total_size * 100
    per = str(int(percentage_of_completion))
    progress.configure(text=per + '%')
    progress.update()

    # update Progress Bar
    progressbar.set(float(percentage_of_completion) / 100)


# System Settings

customtkinter.set_appearance_mode("system")
customtkinter.set_default_color_theme("blue")

# Our app frame
app_icon = "C:\\Users\\paliw\\Desktop\\YTLinkDownloader\\applogo.ico"

app = customtkinter.CTk()
app.geometry("720x480")
app.title("YouTube Link Downloader")

# Set the window title logo
app.iconbitmap(app_icon)

# Adding UI elements
title = customtkinter.CTkLabel(app, text="Insert a YouTube Link", width=200, height=50, font=("cursive", 28))
title.pack(padx=10, pady=10)

# Link input
url_var = tk.StringVar()
link = customtkinter.CTkEntry(app, width=500, height=50, textvariable=url_var)
link.pack()

# Finished Downloading
finishLabel = customtkinter.CTkLabel(app, text="")
finishLabel.pack()

# Progress Percentage
progress = customtkinter.CTkLabel(app, text="0%")
progress.pack()

# ProgressBar
progressbar = customtkinter.CTkProgressBar(app, width=400)
progressbar.set(0)
progressbar.pack(padx=10, pady=10)

# Download High Quality Video button
download_hq = customtkinter.CTkButton(app, text="Download High Quality-Mp4",
                                      command=lambda: startDownload("highQuality"))
download_hq.pack(padx=10, pady=10)

# Download Low Quality Video Button
download_lq = customtkinter.CTkButton(app, text="Download Low Quality-Mp4", command=lambda: startDownload("lowQuality"))
download_lq.pack(padx=10, pady=10)

# Download Audio Button
download_audio = customtkinter.CTkButton(app, text="Download Mp3", command=lambda: startDownload("audio"))
download_audio.pack(padx=10, pady=10)

# Run our App
app.mainloop()