app.py

import gradio as gr
import pygame
import moviepy.editor as mp
import midi  # You might need a different package based on your needs, e.g., mido or pretty_midi

# Function to play MIDI and generate video
def play_midi_and_generate_video(midi_file):
    # Initialize Pygame
    pygame.mixer.init()
    pygame.mixer.music.load(midi_file)
    
    # Play the MIDI file
    pygame.mixer.music.play()
    
    # Process the MIDI file to generate a visualizer
    pattern = midi.read_midifile(midi_file)
    
    # Placeholder for visualization creation logic
    # Here you would convert the MIDI data into some form of visual output
    # For the purpose of this example, we'll just create a blank video
    
    clip = mp.ColorClip(size=(640, 480), color=(255, 255, 255), duration=5)  # 5 seconds white screen
    video_file = "visualization.mp4"
    clip.write_videofile(video_file, fps=24)
    
    return video_file

# Gradio Interface
with gr.Blocks() as demo:
    midi_input = gr.File(label="Upload MIDI file")
    video_output = gr.Video()
    
    midi_input.change(play_midi_and_generate_video, inputs=[midi_input], outputs=[video_output])

demo.launch()