vaapih264enc

vaapih264enc — A VA-API based H.264 video encoder

Properties

guint bitrate Read / Write
gboolean cabac Read / Write
guint cpb-length Read / Write
gboolean dct8x8 Read / Write
guint init-qp Read / Write
guint keyframe-period Read / Write
guint max-bframes Read / Write
guint min-qp Read / Write
guint num-slices Read / Write
guint num-views Read / Write
GstVaapiRateControlH264 rate-control Read / Write
GstVaapiEncoderTuneH264 tune Read / Write
GValueArray * view-ids Read / Write

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GstObject
            ╰── GstElement
                ╰── GstVideoEncoder
                    ╰── GstVaapiEncode
                        ╰── GstVaapiEncodeH264

Description

Encodes raw video streams into H.264 bitstreams.

Example launch line

1
gst-launch-1.0 -ev videotestsrc num-buffers=60 ! timeoverlay ! vaapih264enc ! mp4mux ! filesink location=test.mp4

Synopsis

Element Information

plugin

vaapi

author

Wind Yuan <feng.yuan@intel.com>

class

Codec/Encoder/Video

Element Pads

name

sink

direction

sink

presence

always

details

video/x-raw(memory:VASurface), format=(string){ ENCODED, NV12, I420, YV12 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], interlace-mode=(string)progressive

video/x-raw, format=(string){ I420, YV12, YUY2, UYVY, AYUV, RGBx, BGRx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR, Y41B, Y42B, YVYU, Y444, v210, v216, NV12, NV21, NV16, NV61, 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, A420_10LE, A420_10BE, A422_10LE, A422_10BE, A444_10LE, A444_10BE }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], interlace-mode=(string)progressive

name

src

direction

source

presence

always

details

video/x-h264, stream-format=(string){ avc, byte-stream }, alignment=(string)au, profile=(string){ constrained-baseline, baseline, main, high, multiview-high, stereo-high }

Functions

Types and Values

Property Details

The “bitrate” property

  “bitrate”                  guint

The desired bitrate expressed in kbps (0: auto-calculate).

Flags: Read / Write

Allowed values: <= 102400

Default value: 0


The “cabac” property

  “cabac”                    gboolean

Enable CABAC entropy coding mode.

Flags: Read / Write

Default value: FALSE


The “cpb-length” property

  “cpb-length”               guint

Length of the CPB buffer in milliseconds.

Flags: Read / Write

Allowed values: [1,10000]

Default value: 1500


The “dct8x8” property

  “dct8x8”                   gboolean

Enable adaptive use of 8x8 transforms in I-frames.

Flags: Read / Write

Default value: FALSE


The “init-qp” property

  “init-qp”                  guint

Initial quantizer value.

Flags: Read / Write

Allowed values: [1,51]

Default value: 26


The “keyframe-period” property

  “keyframe-period”          guint

Maximal distance between two keyframes (0: auto-calculate).

Flags: Read / Write

Allowed values: [1,300]

Default value: 30


The “max-bframes” property

  “max-bframes”              guint

Number of B-frames between I and P.

Flags: Read / Write

Allowed values: <= 10

Default value: 0


The “min-qp” property

  “min-qp”                   guint

Minimum quantizer value.

Flags: Read / Write

Allowed values: [1,51]

Default value: 1


The “num-slices” property

  “num-slices”               guint

Number of slices per frame.

Flags: Read / Write

Allowed values: [1,200]

Default value: 1


The “num-views” property

  “num-views”                guint

Number of Views for MVC encoding.

Flags: Read / Write

Allowed values: [1,10]

Default value: 1


The “rate-control” property

  “rate-control”             GstVaapiRateControlH264

Rate control mode.

Flags: Read / Write

Default value: Constant QP


The “tune” property

  “tune”                     GstVaapiEncoderTuneH264

Encoder tuning option.

Flags: Read / Write

Default value: None


The “view-ids” property

  “view-ids”                 GValueArray *

Set of View Ids used for MVC encoding.

Flags: Read / Write