app.py

import gradio as gr
from pydub import AudioSegment
import tempfile
import os

def convert_wav_to_mp3(wav_file):
    base_name = os.path.splitext(os.path.basename(wav_file.name))[0]
    output_filename = f"{base_name}.mp3"
    
    temp_dir = tempfile.mkdtemp()
    output_path = os.path.join(temp_dir, output_filename)

    audio = AudioSegment.from_wav(wav_file.name)
    audio.export(
        output_path, 
        format="mp3", 
        bitrate="320k", 
        parameters=["-ar", "48000", "-ac", "2"]
    )

    return output_path

iface = gr.Interface(
    fn=convert_wav_to_mp3,
    inputs=gr.File(label="Upload WAV File", file_types=[".wav"]),
    outputs=gr.File(label="Download MP3 File"),
    title="WAV to MP3 Converter (Max Quality)",
    description="Upload a WAV file and download the converted MP3 file in maximum quality (320 kbps, 48 kHz, stereo)."
)

if __name__ == "__main__":
    iface.launch()