openh264enc

OpenH264 video encoder

Hierarchy

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstVideoEncoder
                    ╰──openh264enc

Implemented interfaces

Factory details

Authors: – Ericsson AB, http://www.ericsson.com

Classification:Encoder/Video

Rank – marginal

Plugin – openh264

Package – GStreamer Bad Plug-ins

Pad Templates

sink

video/x-raw:
         format: I420
          width: [ 1, 2147483647 ]
         height: [ 1, 2147483647 ]
      framerate: [ 0/1, 2147483647/1 ]

Presencealways

Directionsink

Object typeGstPad


src

video/x-h264:
  stream-format: byte-stream
      alignment: au
        profile: baseline

Presencealways

Directionsrc

Object typeGstPad


Properties

adaptive-quantization

“adaptive-quantization” gboolean

Adaptive quantization

Flags : Read / Write

Default value : true


background-detection

“background-detection” gboolean

Background detection

Flags : Read / Write

Default value : true


bitrate

“bitrate” guint

Bitrate (in bits per second)

Flags : Read / Write

Default value : 128000


complexity

“complexity” Openh264enc-complexity *

Complexity

Flags : Read / Write

Default value : medium (1)


deblocking

“deblocking” Openh264enc-deblocking-modes *

Deblocking mode

Flags : Read / Write

Default value : on (0)


enable-denoise

“enable-denoise” gboolean

Denoise control

Flags : Read / Write

Default value : false


enable-frame-skip

“enable-frame-skip” gboolean

Skip frames to reach target bitrate

Flags : Read / Write

Default value : false


gop-size

“gop-size” guint

Number of frames between intra frames

Flags : Read / Write

Default value : 90


max-bitrate

“max-bitrate” guint

Maximum Bitrate (in bits per second)

Flags : Read / Write

Default value : 0


max-slice-size

“max-slice-size” guint

The maximum size of one slice (in bytes).

Flags : Read / Write

Default value : 1500000


multi-thread

“multi-thread” guint

The number of threads.

Flags : Read / Write

Default value : 0


num-slices

“num-slices” guint

The number of slices (needs slice-mode=n-slices)

Flags : Read / Write

Default value : 1


qp-max

“qp-max” guint

Maximum quantizer

Flags : Read / Write

Default value : 51


qp-min

“qp-min” guint

Minimum quantizer

Flags : Read / Write

Default value : 0


rate-control

“rate-control” Rc_modes *

Rate control mode

Flags : Read / Write

Default value : quality (0)


scene-change-detection

“scene-change-detection” gboolean

Scene change detection

Flags : Read / Write

Default value : true


slice-mode

“slice-mode” Openh264enc-slice-modes *

Slice mode

Flags : Read / Write

Default value : n-slices (1)


usage-type

“usage-type” Eusage-type *

Type of video content

Flags : Read / Write

Default value : camera (0)


Named constants

Eusage-type

Members

camera (0) – video from camera
screen (1) – screen content

Openh264enc-slice-modes

Members

n-slices (1) – Fixed number of slices
auto (5) – Number of slices equal to number of threads

Openh264enc-complexity

Members

low (0) – Low complexity / high speed encoding
medium (1) – Medium complexity / medium speed encoding
high (2) – High complexity / low speed encoding

Openh264enc-deblocking-modes

Members

on (0) – Deblocking on
off (1) – Deblocking off
not-slice-boundaries (2) – Deblocking on, except for slice boundaries

Rc_modes

Members

quality (0) – Quality mode
bitrate (1) – Bitrate mode
buffer (2) – No bitrate control, just using buffer status
off (-1) – Rate control off mode

The results of the search are