import gradio as gr
import subprocess
import tempfile
import os

def convert_webm_to_mp4(webm_file):
    if webm_file is None:
        return None

    tmp_dir = tempfile.mkdtemp()
    mp4_path = os.path.join(tmp_dir, "output.mp4")

    subprocess.run(
        ["ffmpeg", "-y", "-i", webm_file, "-c:v", "libx264", mp4_path],
        check=True
    )

    return mp4_path

# --- Interface Gradio compatível com App Builder ---
iface = gr.Interface(
    fn=convert_webm_to_mp4,
    inputs=gr.Video(label="Upload WebM"),
    outputs=gr.File(label="Download MP4"),
)

if __name__ == "__main__":
    # O cors_allowed_origins=["*"] libera o acesso para qualquer site (incluindo este preview)
    iface.launch(
        server_name="0.0.0.0", 
        server_port=7860, 
        cors_allowed_origins=["*"] 
    )