downloader.py

import yt_dlp
import os

def download_audio(url, output_format="mp3"):
    """
    Downloads audio from a given URL and converts it to the selected format.
    """
    os.makedirs("downloads", exist_ok=True)

    ydl_opts = {
        'format': 'bestaudio/best',
        'outtmpl': os.path.join("downloads", '%(title)s.%(ext)s'),
        'postprocessors': [{
            'key': 'FFmpegExtractAudio',
            'preferredcodec': output_format,
            'preferredquality': '192',
        }],
        'noplaylist': True,
        'quiet': True,
        'no_warnings': True
    }

    with yt_dlp.YoutubeDL(ydl_opts) as ydl:
        info = ydl.extract_info(url, download=True)
        filename = os.path.splitext(ydl.prepare_filename(info))[0] + f".{output_format}"
        return os.path.abspath(filename), info.get('title', 'Unknown title')