app.py

import gradio as gr
import subprocess
import tempfile
import os

def upscale_video(video):
    with tempfile.TemporaryDirectory() as tempdir:
        input_path = os.path.join(tempdir, "input.mp4")
        output_path = os.path.join(tempdir, "output.mp4")

        with open(input_path, "wb") as f:
            f.write(video.read())

        cmd = [
            "python", "inference_realesrgan.py",
            "-i", input_path,
            "-o", output_path,
            "-n", "RealESRGAN_x4plus",
            "--outscale", "2"
        ]

        try:
            subprocess.run(cmd, check=True)
            return output_path
        except subprocess.CalledProcessError as e:
            return f"Error: {str(e)}"

demo = gr.Interface(fn=upscale_video, 
                    inputs=gr.Video(label="Upload your video"),
                    outputs=gr.Video(label="Upscaled Output"),
                    title="Video Upscaler - Real-ESRGAN",
                    description="Upload a low-resolution video and get an upscaled version using Real-ESRGAN.")

demo.launch()