25 - Video to Audio Converter with Python.py

import tkinter as tk
from tkinter import messagebox, filedialog
import subprocess
import os
import sys
import shutil
from pytube import YouTube
import pytube.extract

def find_ffmpeg():
    base_dir = os.path.dirname(os.path.abspath(sys.argv[0]))
    bundled = os.path.join(
        base_dir,
        "ffmpeg-master-latest-win64-gpl",
        "bin",
        "ffmpeg.exe"
    )
    if os.path.isfile(bundled):
        return bundled
    if shutil.which("ffmpeg"):
        return "ffmpeg"
    return None


def download_audio():
    url = url_entry.get().strip()
    if not url:
        messagebox.showerror("Error", "Enter a YouTube URL")
        return

    status_var.set("Extracting video ID...")
    root.update()

    try:
        video_id = pytube.extract.video_id(url)
    except Exception as e:
        messagebox.showerror("Error", f"Invalid YouTube URL\n{e}")
        return

    ffmpeg = find_ffmpeg()
    if not ffmpeg:
        messagebox.showerror(
            "Error",
            "ffmpeg not found.\nInstall ffmpeg or place it in the bundled folder."
        )
        return

    try:
       
        status_var.set("Downloading audio with yt-dlp...")
        root.update()

        ytdlp_cmd = [
            sys.executable, "-m", "yt_dlp",
            "-x",
            "--audio-format", "mp3",
            "-o", f"{video_id}.%(ext)s",
            url
        ]
        subprocess.run(ytdlp_cmd, check=True)

        # Find output file
        downloaded_file = None
        for f in os.listdir():
            if f.startswith(video_id):
                downloaded_file = os.path.abspath(f)
                break

        if not downloaded_file:
            raise Exception("Download finished but file not found.")

        if downloaded_file.lower().endswith(".mp3"):
            status_var.set("Download completed successfully.")
            messagebox.showinfo("Success", f"Saved MP3:\n{downloaded_file}")
            return

    except Exception:
        
        try:
            status_var.set("yt-dlp failed. Using pytube...")
            root.update()

            yt = YouTube(url)
            stream = yt.streams.filter(only_audio=True).order_by("abr").desc().first()
            if not stream:
                raise Exception("No audio stream available.")

            downloaded_file = stream.download(filename=video_id)
        except Exception as e:
            messagebox.showerror("Error", f"Download failed\n{e}")
            return

    
    status_var.set("Converting to MP3...")
    root.update()

    base, _ = os.path.splitext(downloaded_file)
    mp3_path = base + ".mp3"

    cmd = [
        ffmpeg, "-y",
        "-i", downloaded_file,
        "-vn",
        "-b:a", "192k",
        "-ar", "44100",
        mp3_path
    ]

    try:
        subprocess.run(cmd, check=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        os.remove(downloaded_file)
        status_var.set("Conversion completed.")
        messagebox.showinfo("Success", f"Saved MP3:\n{mp3_path}")
    except subprocess.CalledProcessError as e:
        messagebox.showerror(
            "FFmpeg Error",
            e.stderr.decode("utf-8", errors="ignore")
        )


root = tk.Tk()
root.title("YouTube to MP3 Downloader")
root.geometry("520x220")
root.resizable(False, False)

tk.Label(root, text="YouTube URL", font=("Segoe UI", 11)).pack(pady=10)

url_entry = tk.Entry(root, width=65)
url_entry.pack(pady=5)

download_btn = tk.Button(
    root,
    text="Download MP3",
    font=("Segoe UI", 11),
    command=download_audio
)
download_btn.pack(pady=15)

status_var = tk.StringVar(value="Idle")
status_label = tk.Label(
    root,
    textvariable=status_var,
    fg="blue",
    font=("Segoe UI", 10)
)
status_label.pack(pady=5)

root.mainloop()