app.py

import gradio as gr 
import yt_dlp
import os 

def dl(inp):
    out = None
    try:
        inp_out=inp.replace("https://","")
        inp_out=inp_out.replace("/","_").replace(".","_")
        os.system(f'yt-dlp "{inp}" --trim-filenames 100 -o "{inp_out}.mp4"')  
        out = f"{inp_out}.mp4"
    except Exception as e:
        out = None
    return out


with gr.Blocks() as app:
    inp_url = gr.Textbox()
    go_btn = gr.Button()
    outp_vid=gr.Video()
    go_btn.click(dl,inp_url,outp_vid)

app.launch()