import os
import base64


def new_video_id(length: int = 11) -> str:
    """Generate a YouTube-style random id, e.g. 'dQw4w9WgXcQ'."""
    raw = os.urandom(length)
    b64 = base64.urlsafe_b64encode(raw).decode("ascii")
    b64 = b64.replace("=", "")
    return b64[:length]