Open Youtube links (vnd-youtube:) from Messenger on Windows

youtube_opener.py

# -*- coding: utf-8 -*-
import sys
import webbrowser
import json
from urllib.parse import urlparse, unquote, parse_qs

vndurl = sys.argv[1].replace('vnd.youtube', 'https')
if vndurl.startswith('https://www.youtu') or vndurl.startswith('https://youtu'): 
    webbrowser.open(vndurl)
else:
    [scheme, netloc, path, params, query, fragment] = urlparse(vndurl)
    queryDict = parse_qs(query)
    if 'al_applink_data' in queryDict:
        applinkData = json.loads(queryDict['al_applink_data'][0])
        if 'target_url' in applinkData:
            webbrowser.open(applinkData['target_url'])

# See https://docs.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/platform-apis/aa767914(v=vs.85)