app.py

import gradio as gr
from yt_dlp import YoutubeDL
import os
    
def download_video(url):
  ydl_opts = {'overwrites':True, 'format':'bestvideo[ext=mp4]+bestaudio[ext=m4a]/mp4', 'outtmpl':'/content/video.mp4'}
  with YoutubeDL(ydl_opts) as ydl:
    ydl.download(url)
    return f"/content/video.mp4"

def generate(audio_in):
    print(audio_in)
    os.system(f"python inference.py --checkpoint_path checkpoints/wav2lip_gan.pth --face '/content/video.mp4' --audio '{audio_in}'")
    return f"/content/Wav2Lip/results/result_voice.mp4"

app = gr.Blocks()
with app:
  with gr.Row():
    with gr.Column():
      input_text = gr.Textbox(show_label=False, value="https://youtu.be/EU3hIXXeiz4")
      input_download_button = gr.Button(value="Download from YouTube or Twitch")
      audio_in = gr.Audio(show_label=False, type='filepath')
      input_generate_button = gr.Button(value="Generate")
    with gr.Column():
        video_out = gr.outputs.Video(label="Output Video")
    input_download_button.click(download_video, inputs=[input_text], outputs=[video_out])
    input_generate_button.click(generate, inputs=[audio_in], outputs=[video_out])
  
app.launch(debug=True)