$ gst-inspect-1.0 rtpj2kpay
Factory Details:
  Rank                     secondary (128)
  Long-name                RTP JPEG 2000 payloader
  Klass                    Codec/Payloader/Network/RTP
  Description              Payload-encodes JPEG 2000 pictures into RTP packets (RFC 5371)
  Author                   Wim Taymans <wim.taymans@gmail.com>

Plugin Details:
  Name                     rtp
  Description              Real-time protocol plugins
  Filename                 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstrtp.so
  Version                  1.2.4
  License                  LGPL
  Source module            gst-plugins-good
  Source release date      2014-04-18
  Binary package           GStreamer Good Plugins (Ubuntu)
  Origin URL               https://launchpad.net/distros/ubuntu/+source/gst-plugins-good1.0

GObject
 +----GInitiallyUnowned
       +----GstObject
             +----GstElement
                   +----GstRTPBasePayload
                         +----GstRtpJ2KPay

Pad Templates:
  SRC template: 'src'
    Availability: Always
    Capabilities:
      application/x-rtp
                  media: video
                payload: [ 96, 127 ]
             clock-rate: 90000
          encoding-name: JPEG2000

  SINK template: 'sink'
    Availability: Always
    Capabilities:
      image/x-jpc


Element Flags:
  no flags set

Element Implementation:
  Has change_state() function: 0x7f4a9045daf0

Element has no clocking capabilities.
Element has no indexing capabilities.
Element has no URI handling capabilities.

Pads:
  SRC: 'src'
    Implementation:
      Has custom eventfunc(): gst_pad_event_default
      Has custom queryfunc(): gst_pad_query_default
      Has custom iterintlinkfunc(): gst_pad_iterate_internal_links_default
    Pad Template: 'src'
  SINK: 'sink'
    Implementation:
      Has chainfunc(): 0x7f4a9045d2c0
      Has custom eventfunc(): 0x7f4a9045d280
      Has custom queryfunc(): 0x7f4a9045d1e0
      Has custom iterintlinkfunc(): gst_pad_iterate_internal_links_default
    Pad Template: 'sink'

Element Properties:
  name                : The name of the object
                        flags: readable, writable
                        String. Default: "rtpj2kpay0"
  parent              : The parent of the object
                        flags: readable, writable
                        Object of type "GstObject"
  mtu                 : Maximum size of one packet
                        flags: readable, writable
                        Unsigned Integer. Range: 28 - 4294967295 Default: 1400 
  pt                  : The payload type of the packets
                        flags: readable, writable
                        Unsigned Integer. Range: 0 - 128 Default: 96 
  ssrc                : The SSRC of the packets (default == random)
                        flags: readable, writable
                        Unsigned Integer. Range: 0 - 4294967295 Default: 4294967295 
  timestamp-offset    : Offset to add to all outgoing timestamps (default = random)
                        flags: readable, writable
                        Unsigned Integer. Range: 0 - 4294967295 Default: 4294967295 
  seqnum-offset       : Offset to add to all outgoing seqnum (-1 = random)
                        flags: readable, writable
                        Integer. Range: -1 - 65535 Default: -1 
  max-ptime           : Maximum duration of the packet data in ns (-1 = unlimited up to MTU)
                        flags: readable, writable
                        Integer64. Range: -1 - 9223372036854775807 Default: -1 
  min-ptime           : Minimum duration of the packet data in ns (can't go above MTU)
                        flags: readable, writable
                        Integer64. Range: 0 - 9223372036854775807 Default: 0 
  timestamp           : The RTP timestamp of the last processed packet
                        flags: readable
                        Unsigned Integer. Range: 0 - 4294967295 Default: 0 
  seqnum              : The RTP sequence number of the last processed packet
                        flags: readable
                        Unsigned Integer. Range: 0 - 65535 Default: 0 
  perfect-rtptime     : Generate perfect RTP timestamps when possible
                        flags: readable, writable
                        Boolean. Default: true
  ptime-multiple      : Force buffers to be multiples of this duration in ns (0 disables)
                        flags: readable, writable
                        Integer64. Range: 0 - 9223372036854775807 Default: 0 


$ gst-inspect-1.0 rtpj2kdepay
Factory Details:
  Rank                     secondary (128)
  Long-name                RTP JPEG 2000 depayloader
  Klass                    Codec/Depayloader/Network/RTP
  Description              Extracts JPEG 2000 video from RTP packets (RFC 5371)
  Author                   Wim Taymans <wim.taymans@gmail.com>

Plugin Details:
  Name                     rtp
  Description              Real-time protocol plugins
  Filename                 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstrtp.so
  Version                  1.2.4
  License                  LGPL
  Source module            gst-plugins-good
  Source release date      2014-04-18
  Binary package           GStreamer Good Plugins (Ubuntu)
  Origin URL               https://launchpad.net/distros/ubuntu/+source/gst-plugins-good1.0

GObject
 +----GInitiallyUnowned
       +----GstObject
             +----GstElement
                   +----GstRTPBaseDepayload
                         +----GstRtpJ2KDepay

Pad Templates:
  SRC template: 'src'
    Availability: Always
    Capabilities:
      image/x-jpc

  SINK template: 'sink'
    Availability: Always
    Capabilities:
      application/x-rtp
                  media: video
             clock-rate: 90000
          encoding-name: JPEG2000


Element Flags:
  no flags set

Element Implementation:
  Has change_state() function: 0x7f9841ef99b0

Element has no clocking capabilities.
Element has no indexing capabilities.
Element has no URI handling capabilities.

Pads:
  SINK: 'sink'
    Implementation:
      Has chainfunc(): 0x7f9841602080
      Has custom eventfunc(): 0x7f9841601510
      Has custom queryfunc(): gst_pad_query_default
      Has custom iterintlinkfunc(): gst_pad_iterate_internal_links_default
    Pad Template: 'sink'
  SRC: 'src'
    Implementation:
      Has custom eventfunc(): gst_pad_event_default
      Has custom queryfunc(): gst_pad_query_default
      Has custom iterintlinkfunc(): gst_pad_iterate_internal_links_default
    Pad Template: 'src'

Element Properties:
  name                : The name of the object
                        flags: readable, writable
                        String. Default: "rtpj2kdepay0"
  parent              : The parent of the object
                        flags: readable, writable
                        Object of type "GstObject"
