Using do_transform_frame in GstVideo.VideoFilter (python)

[dpw157]

hey,

so here is some minimal code that may explain my issue. 

class GstTimestamp(GstVideo.VideoFilter):
  __gstmetadata__ = ('<longname>', '<classification>',
                     '<description>', '<author>')

  __gsttemplates__ = (Gst.PadTemplate.new("sink",
                                           Gst.PadDirection.SINK,
                                           Gst.PadPresence.ALWAYS,
                                           Gst.Caps.new_any()),
                      Gst.PadTemplate.new("src",
                                           Gst.PadDirection.SRC,
                                           Gst.PadPresence.ALWAYS,
                                           Gst.Caps.new_any()))

  def __init__(self):
    GstVideo.VideoFilter.__init__(self)

  def do_transform_frame(self,inframe,outframe):

    #this should give me that data for the frame
    data = inframe.buffer
    print data
    return Gst.FlowReturn.OK



When i do this every time a frame a pushed data is None and i just get a
blank screen from ximagesink.
Thanks for the help and taking the time to look at this



--
Sent from: http://gstreamer-devel.966125.n4.nabble.com/