[완료]GStreamer에서, 비디오영상 바깥에 글자띄우는 방법

 % gst-inspect-0.10 videobox
Factory Details:
  Long name:	Video box filter
  Class:	Filter/Effect/Video
  Description:	Resizes a video by adding borders or cropping
  Author(s):	Wim Taymans <wim@fluendo.com>
  Rank:		none (0)
 
Plugin Details:
  Name:			videobox
  Description:		resizes a video by adding borders or cropping
  Filename:		/usr/lib/gstreamer-0.10/libgstvideobox.so
  Version:		0.10.11
  License:		LGPL
  Source module:	gst-plugins-good
  Binary package:	Gentoo GStreamer Ebuild
  Origin URL:		<a href="http://www.gentoo.org" rel="nofollow">http://www.gentoo.org</a>
 
GObject
 +----GstObject
       +----GstElement
             +----GstBaseTransform
                   +----GstVideoBox
 
Pad Templates:
  SINK template: 'sink'
    Availability: Always
    Capabilities:
      video/x-raw-yuv
                 format: AYUV
                  width: [ 1, 2147483647 ]
                 height: [ 1, 2147483647 ]
              framerate: [ 0/1, 2147483647/1 ]
      video/x-raw-yuv
                 format: I420
                  width: [ 1, 2147483647 ]
                 height: [ 1, 2147483647 ]
              framerate: [ 0/1, 2147483647/1 ]
 
  SRC template: 'src'
    Availability: Always
    Capabilities:
      video/x-raw-yuv
                 format: AYUV
                  width: [ 1, 2147483647 ]
                 height: [ 1, 2147483647 ]
              framerate: [ 0/1, 2147483647/1 ]
      video/x-raw-yuv
                 format: I420
                  width: [ 1, 2147483647 ]
                 height: [ 1, 2147483647 ]
              framerate: [ 0/1, 2147483647/1 ]
 
 
Element Flags:
  no flags set
 
Element Implementation:
  Has change_state() function: gst_element_change_state_func
  Has custom save_thyself() function: gst_element_save_thyself
  Has custom restore_thyself() function: gst_element_restore_thyself
 
Element has no clocking capabilities.
Element has no indexing capabilities.
Element has no URI handling capabilities.
 
Pads:
  SRC: 'src'
    Implementation:
      Has getrangefunc(): gst_base_transform_getrange
      Has custom eventfunc(): gst_base_transform_src_event
    Pad Template: 'src'
  SINK: 'sink'
    Implementation:
      Has chainfunc(): gst_base_transform_chain
      Has custom eventfunc(): gst_base_transform_sink_event
      Has bufferallocfunc(): gst_base_transform_buffer_alloc
    Pad Template: 'sink'
 
Element Properties:
  name                : The name of the object
                        flags: readable, writable
                        String. Default: null Current: "videobox0"
  qos                 : Handle Quality-of-Service events
                        flags: readable, writable
                        Boolean. Default: false Current: false
  left                : Pixels to box at left (<0  = add a border)
                        flags: readable, writable
                        Integer. Range: -2147483648 - 2147483647 Default: 0 Current: 0
  right               : Pixels to box at right (<0 = add a border)
                        flags: readable, writable
                        Integer. Range: -2147483648 - 2147483647 Default: 0 Current: 0
  top                 : Pixels to box at top (<0 = add a border)
                        flags: readable, writable
                        Integer. Range: -2147483648 - 2147483647 Default: 0 Current: 0
  bottom              : Pixels to box at bottom (<0 = add a border)
                        flags: readable, writable
                        Integer. Range: -2147483648 - 2147483647 Default: 0 Current: 0
  fill                : How to fill the borders
                        flags: readable, writable
                        Enum "GstVideoBoxFill" Default: 0, "black" Current: 0, "black"
                           (0): black            - Black
                           (1): green            - Colorkey green
                           (2): blue             - Colorkey blue
  alpha               : Alpha value picture
                        flags: readable, writable
                        Double. Range:               0 -               1 Default:               1 Current:               1
  border-alpha        : Alpha value of the border
                        flags: readable, writable
                        Double. Range:               0 -               1 Default:               1 Current:               1