new_contents: import re
  import os
  from glob import glob
  from subprocess import Popen, PIPE
  from time import strftime, strptime
  # many of these imports serve the commented code...
  
  # this is the hard-split version (files need to be concatenated...)
  def check_dimension(f):
      """ If f is larger than 50MB it divides it into files up to 45MB """
      if os.path.getsize(f) > 50 * 1024 * 1023:
          os.system("split -b 45MB {0} {1}".format(f, f))
          os.remove(f)
  
  
  # this is the soft-split version, require avconv, but the audio isn't synchronized, avconv's problems :(
  '''
  def get_duration(filepath): # get duration in seconds
      cmd = "avconv -i %s" % filepath
      p = Popen(cmd, shell=True, stdout=PIPE, stderr=PIPE)
      di = p.communicate()
      for line in di:
          if line.rfind(b"Duration") > 0:
              duration = str(re.findall(b"Duration: (\d+:\d+:[\d.]+)", line)[0])
      return 3600 * int(duration[2: 4]) + 60 * int(duration[5: 7]) + int(duration[8: 10])
  
  def check_dimension(f): # if f is bigger than 50MB split it in subvideos
      if os.path.getsize(f) > 50 * 1024 * 1023:
          duration = get_duration(f)
          for i in range(0, duration, 180):
              start = strftime("%H:%M:%S", strptime('{0} {1} {2}'.format(i // 3600, (i // 60) % 60, i % 60), "%H %M %S")) # TODO this is  not pythonic code!
              os.system("""avconv -i '{0}' -vcodec copy -acodec copy -ss {1} -t {2} 'part_{3}.mp4'""".format(f, start, 180, (i // 180) % 180))
          os.remove(f) # delete original file
  '''
  
subject: Create vid_utils.py