url = 'https://ok.ru/videoembed/' + '328192166429' #video url
regex = [
'https://vd\\d+.mycdn.me/expires/\\d+.*m3u8',
'https://vd\\d+.mycdn.me/video.m3u8.*?id=\\d+'
]

def get_stream(url):

    r = requests.get(url)

    url_list = list(filter(lambda x: x is not None, map(lambda x: re.search(x, r.text), regex)))
    return url_list[0].group(0).replace('\\\\u0026', '&') + '&bytes='


url = get_stream(url)
print(url)