This code cheeks what OS you are using and then finds the name.
python:
if os.name == 'nt':
import os
for name in ('LOGNAME', 'USER', 'LNAME', 'USERNAME'):
system = os.environ.get(name)
elif os.name == 'posix':
import os
for user in ('LOGNAME', 'USER', 'LNAME', 'USERNAME'):
system = os.environ.get('USER')
And the static is a webm video.