subprojects/gst-plugins-bad/gst/gaudieffects/burn-example.py

   1 #!/usr/bin/python
   2 import gobject; gobject.threads_init()
   3 import pygst; pygst.require("0.10")
   4 import gst
   5
   6 p = gst.parse_launch ("""
   7    v4l2src !
   8    videoconvert ! queue ! video/x-raw,width=320,height=240,framerate=30/1 !  burn qos=true name=vf ! videoconvert !  timeoverlay ! xvimagesink
   9    """)
  10
  11 m = p.get_by_name ("vf")
  12 m.set_property ("adjustment", 128)
  13
  14 control = gst.Controller(m, "adjustment")
  15 control.set_interpolation_mode("adjustment", gst.INTERPOLATE_LINEAR)
  16 control.set("adjustment", 0 * gst.SECOND, 128)
  17 control.set("adjustment", 5 * gst.SECOND, 256)
  18 control.set("adjustment", 25 * gst.SECOND, 0)
  19
  20 p.set_state (gst.STATE_PLAYING)
  21
  22 gobject.MainLoop().run()