#!/usr/bin/env python

import codecs

import sys

import dateutil.parser

from datetime import date, datetime, time

from dateutil.tz import tzlocal

import pytz

if __name__ == "__main__":

    file_log = codecs.open(sys.argv[1], 'r', "UTF-16LE")

    start_time = ""

    duration = None

    start_stat = False

    for line in file_log:

        if "Session Started" in line:

             start_time = dateutil.parser.parse(":".join(line.split(":")[:-1]).strip()).replace(tzinfo=tzlocal())

             start_time_utc = start_time.astimezone(pytz.utc)

        if "Encoding Statistics" in line:

            start_stat = True

        if start_stat and line.startswith("Video"):

            duration = dateutil.parser.parse(line.split()[2]) - datetime.combine(date.today(), time())

        if start_stat and duration:

            print("Start time local: " + start_time.isoformat())

            print("Start time UTC  : " + start_time_utc.isoformat())

            if duration:

                print("Duration  : " + str(duration) + " - " + str(int(duration.total_seconds())) + " s - " + str(int(duration.total_seconds())*1000) + " ms")

            duration = None

            start_stat = False