app.py

import os
import re
import subprocess
import gradio as gr

pattern = r"(?:v=|\/)([0-9A-Za-z_-]{11})"

def fetch_video(yt_url):
    _id = re.search(pattern, yt_url).group(1)
    path = os.path.join(f"{_id}.mp4")
    if os.path.exists(path):
        return path
    subprocess.run(f'yt-dlp -o {path} "{yt_url}"', shell=True)
    return path

interface = gr.Interface(fetch_video, gr.Text(label="YouTube Video Link"), gr.File(label="Output video"), title="YouTube Video Downloader")
interface.launch()