new_contents: import gst
  import gobject
  import os
  
  VIDEODEVICE = "/dev/video1"
  WIDTH = 1280
  HEIGHT = 960
  FRAMERATE = "15/1"
  
  try:
      import psutil
  except ImportError:
      psutil = None
  
  def show_resources_cb (*args):
      process = psutil.Process(os.getpid())
      if getattr(process, "memory_info"):
          print ("Resource usage: %dkB" % (int(process.memory_info()[0]) / 1024))
      elif getattr (process, "get_memory_info"):
          print ("Resource usage: %dkB" % (int(process.memory_info()[0]) / 1024))
      else:
          print ("Unsupported psutil module version")
      return True
  
  def bus_watch(bus, message):
      if message.type == gst.MESSAGE_ERROR:
          print ("Got error message: ", message)
      return True
      
  loop = gobject.MainLoop()
  
  source = gst.element_factory_make ("v4l2src")
  source.set_property("device", VIDEODEVICE)
  flt1 = gst.element_factory_make ("capsfilter")
  flt1.set_property("caps", gst.Caps("video/x-raw-gray,width=%d,height=%d,framerate=(fraction)%s" % (WIDTH, HEIGHT, FRAMERATE)))
  autoexp = gst.element_factory_make ("tis_auto_exposure")
  autoexp.set_property("auto-exposure", True)
  bufferfilter = gst.element_factory_make ("tisvideobufferfilter")
  csp = gst.element_factory_make ("ffmpegcolorspace")
  scale = gst.element_factory_make ("videoscale")
  flt2 = gst.element_factory_make ("capsfilter")
  flt2.set_property("caps", gst.Caps("video/x-raw-yuv,width=640,height=480"))
  sink = gst.element_factory_make ("xvimagesink")
  
  pipeline = gst.Pipeline()
  pipeline.get_bus().add_watch(bus_watch)
  
  pipeline.add_many (source, flt1, autoexp, bufferfilter, csp, scale, flt2, sink)
  
  source.link(flt1)
  flt1.link(autoexp)
  autoexp.link(bufferfilter)
  bufferfilter.link(csp)
  csp.link(scale)
  scale.link(flt2)
  flt2.link(sink)
  
  print ("Starting Pipeline")
  pipeline.set_state(gst.STATE_PLAYING)
  
  if psutil:
      gobject.timeout_add_seconds (1,show_resources_cb)
  else:
      print ("Install psutil package to get resource usage information")
  
  loop.run()
  
subject: Add small demo for a monochrome GST pipeline