gistfile1.txt

Factory Details:
  Rank                     primary (256)
  Long-name                VA-API H.264 encoder
  Klass                    Codec/Encoder/Video
  Description              A VA-API based H.264 video encoder
  Author                   Wind Yuan <feng.yuan@intel.com>

Plugin Details:
  Name                     vaapi
  Description              VA-API based elements
  Filename                 /usr/lib/gstreamer-1.0/libgstvaapi.so
  Version                  0.5.10
  License                  LGPL
  Source module            gstreamer-vaapi
  Binary package           gstreamer-vaapi
  Origin URL               gwenole.beauchesne@intel.com

GObject
 +----GInitiallyUnowned
       +----GstObject
             +----GstElement
                   +----GstVideoEncoder
                         +----GstVaapiEncode
                               +----GstVaapiEncodeH264

Implemented Interfaces:
  GstPreset

Pad Templates:
  SINK template: 'sink'
    Availability: Always
    Capabilities:
      video/x-raw(memory:VASurface)
                 format: { ENCODED, NV12, I420, YV12 }
                  width: [ 1, 2147483647 ]
                 height: [ 1, 2147483647 ]
              framerate: [ 0/1, 2147483647/1 ]
         interlace-mode: progressive
      video/x-raw
                 format: { I420, YV12, YUY2, UYVY, AYUV, RGBx, BGRx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR, Y41B, Y42B, YVYU, Y444, v210, v216, NV12, NV21, NV16, NV24, GRAY8, GRAY16_BE, GRAY16_LE, v308, RGB16, BGR16, RGB15, BGR15, UYVP, A420, RGB8P, YUV9, YVU9, IYU1, ARGB64, AYUV64, r210, I420_10LE, I420_10BE, I422_10LE, I422_10BE, Y444_10LE, Y444_10BE, GBR, GBR_10LE, GBR_10BE, NV12_64Z32 }
                  width: [ 1, 2147483647 ]
                 height: [ 1, 2147483647 ]
              framerate: [ 0/1, 2147483647/1 ]
         interlace-mode: progressive

  SRC template: 'src'
    Availability: Always
    Capabilities:
      video/x-h264
          stream-format: { avc, byte-stream }
              alignment: au
                profile: { constrained-baseline, baseline, main, high, multiview-high, stereo-high }


Element Flags:
  no flags set

Element Implementation:
  Has change_state() function: gst_vaapiencode_change_state

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

Pads:
  SINK: 'sink'
    Implementation:
      Has chainfunc(): gst_video_encoder_chain
      Has custom eventfunc(): gst_video_encoder_sink_event
      Has custom queryfunc(): gst_vaapiencode_query
      Has custom iterintlinkfunc(): gst_pad_iterate_internal_links_default
    Pad Template: 'sink'
  SRC: 'src'
    Implementation:
      Has custom eventfunc(): gst_video_encoder_src_event
      Has custom queryfunc(): gst_vaapiencode_query
      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: "vaapiencodeh264-0"
  parent              : The parent of the object
                        flags: readable, writable
                        Object of type "GstObject"
  rate-control        : Rate control mode
                        flags: readable, writable
                        Enum "GstVaapiRateControlH264" Default: 1, "cqp"
                           (1): cqp              - Constant QP
                           (2): cbr              - Constant bitrate
                           (4): vbr              - Variable bitrate
                           (5): vbr_constrained  - Variable bitrate - Constrained
  bitrate             : The desired bitrate expressed in kbps (0: auto-calculate)
                        flags: readable, writable
                        Unsigned Integer. Range: 0 - 102400 Default: 0 
  keyframe-period     : Maximal distance between two keyframes (0: auto-calculate)
                        flags: readable, writable
                        Unsigned Integer. Range: 1 - 300 Default: 30 
  tune                : Encoder tuning option
                        flags: readable, writable
                        Enum "GstVaapiEncoderTuneH264" Default: 0, "none"
                           (0): none             - None
                           (1): high-compression - High compression
  max-bframes         : Number of B-frames between I and P
                        flags: readable, writable
                        Unsigned Integer. Range: 0 - 10 Default: 0 
  init-qp             : Initial quantizer value
                        flags: readable, writable
                        Unsigned Integer. Range: 1 - 51 Default: 26 
  min-qp              : Minimum quantizer value
                        flags: readable, writable
                        Unsigned Integer. Range: 1 - 51 Default: 1 
  num-slices          : Number of slices per frame
                        flags: readable, writable
                        Unsigned Integer. Range: 1 - 200 Default: 1 
  cabac               : Enable CABAC entropy coding mode
                        flags: readable, writable
                        Boolean. Default: false
  dct8x8              : Enable adaptive use of 8x8 transforms in I-frames
                        flags: readable, writable
                        Boolean. Default: false
  cpb-length          : Length of the CPB buffer in milliseconds
                        flags: readable, writable
                        Unsigned Integer. Range: 1 - 10000 Default: 1500 
  num-views           : Number of Views for MVC encoding
                        flags: readable, writable
                        Unsigned Integer. Range: 1 - 2 Default: 1