import re


def is_valid_vlive_url(url: str) -> bool:
    """Uses a regex to check if the given url is a valid 'vlive.tv./video/' address."""

    # VLIVE videos are only identified by numbers in the url (unlike Youtube IDs,
    # for example)
    vlive_url_regex = r"(vlive\.tv\/video\/[0-9]*)"

    if not re.search(vlive_url_regex, url):
        return False

    return True