import subprocess
import os

def run_wav2lip(face, audio, out):
    # Ensure temp directory exists
    os.makedirs("temp", exist_ok=True)
    
    result = subprocess.run([
        "python",
        "Wav2Lip/inference.py",
        "--checkpoint_path", "models/wav2lip.pth",
        "--face", face,
        "--audio", audio,
        "--outfile", out
    ], check=True, capture_output=True, text=True)
    
    # Check if the output file was created
    if not os.path.exists(out):
        raise RuntimeError(f"Wav2Lip failed to create output video. stderr: {result.stderr}")