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 ]

Presence – always

Direction – sink

Object type – GstPad

src

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

Presence – always

Direction – src

Object type – GstPad

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

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