amfav1enc

amfav1enc element encodes raw video stream into compressed AV1 bitstream via AMD AMF API.

Example launch line

gst-launch-1.0 videotestsrc num-buffers=100 ! amfav1enc ! av1parse ! webmmux ! filesink location=encoded.webm

Hierarchy

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstVideoEncoder
                    ╰──GstAmfEncoder
                        ╰──amfav1enc

Implemented interfaces

GstPreset

Factory details

Authors: – Seungha Yang , Evgeny Pavlov

Classification: – Codec/Encoder/Video/Hardware

Rank – none

Plugin – amfcodec

Package – GStreamer Bad Plug-ins

Pad Templates

`sink`

video/x-raw(memory:D3D11Memory):
         format: { NV12, P010_10LE }
          width: [ 128, 4096 ]
         height: [ 128, 4096 ]
video/x-raw:
         format: { NV12, P010_10LE }
          width: [ 128, 4096 ]
         height: [ 128, 4096 ]

Presence – always

Direction – sink

Object type – GstPad

`src`

video/x-av1:
          width: [ 128, 4096 ]
         height: [ 128, 4096 ]
        profile: main
  stream-format: obu-stream
      alignment: tu

Presence – always

Direction – src

Object type – GstPad

Properties

adapter-luid

“adapter-luid” gint64

DXGI Adapter LUID (Locally Unique Identifier) of associated GPU

Flags : Read

Default value : 0

bitrate

“bitrate” guint

Target bitrate in kbit/sec (0: USAGE default)

Flags : Read / Write

Default value : 0

gop-size

“gop-size” guint

Number of pictures within a GOP

Flags : Read / Write

Default value : 30

max-bitrate

“max-bitrate” guint

Maximum bitrate in kbit/sec (0: USAGE default)

Flags : Read / Write

Default value : 0

max-qp-i

“max-qp-i” gint

Maximum allowed QP value for I frames (-1: USAGE default)

Flags : Read / Write

Default value : -1

max-qp-p

“max-qp-p” gint

Maximum allowed QP value for P frames (-1: USAGE default)

Flags : Read / Write

Default value : -1

min-qp-i

“min-qp-i” gint

Minimum allowed QP value for I frames (-1: USAGE default)

Flags : Read / Write

Default value : -1

min-qp-p

“min-qp-p” gint

Minimum allowed QP value for P frames (-1: USAGE default)

Flags : Read / Write

Default value : -1

pa-activity-type

“pa-activity-type” GstAmfEncPAActivityType *

Set the type of activity analysis for pre-analysis

Flags : Read / Write

Default value : y (0)

Since : 1.24

pa-caq-strength

“pa-caq-strength” GstAmfEncPACAQStrength *

Content Adaptive Quantization strength for pre-analysis

Flags : Read / Write

Default value : medium (1)

Since : 1.24

pa-frame-sad

“pa-frame-sad” gboolean

Enable Frame SAD algorithm

Flags : Read / Write

Default value : true

Since : 1.24

pa-hqmb-mode

“pa-hqmb-mode” GstAmfEncPAHQMBMode *

Set the PA high motion quality boost mode

Flags : Read / Write

Default value : none (0)

Since : 1.24

pa-initial-qp

“pa-initial-qp” guint

Pre-analysis initial QP

Flags : Read / Write

Default value : 0

Since : 1.24

pa-lookahead-buffer-depth

“pa-lookahead-buffer-depth” guint

Pre-analysis lookahead buffer depth

Flags : Read / Write

Default value : 0

Since : 1.24

pa-ltr

“pa-ltr” gboolean

Enable long term reference frame management

Flags : Read / Write

Default value : false

Since : 1.24

pa-max-qp

“pa-max-qp” guint

Pre-analysis max QP

Flags : Read / Write

Default value : 35

Since : 1.24

pa-paq-mode

“pa-paq-mode” GstAmfEncPAPAQMode *

Set the perceptual adaptive quantization mode

Flags : Read / Write

Default value : none (0)

Since : 1.24

pa-scene-change-detection

“pa-scene-change-detection” gboolean

Enable scene change detection for pre-analysis

Flags : Read / Write

Default value : true

Since : 1.24

pa-scene-change-detection-sensitivity

“pa-scene-change-detection-sensitivity” GstAmfEncPASceneChangeDetectionSensitivity *

Pre-analysis scene change detection sensitivity

Flags : Read / Write

Default value : medium (1)

Since : 1.24

pa-static-scene-detection

“pa-static-scene-detection” gboolean

Enable static scene detection for pre-analysis

Flags : Read / Write

Default value : false

Since : 1.24

pa-static-scene-detection-sensitivity

“pa-static-scene-detection-sensitivity” GstAmfEncPAStaticSceneDetectionSensitivity *

Pre-analysis static scene detection sensitivity

Flags : Read / Write

Default value : high (2)

Since : 1.24

pa-taq-mode

“pa-taq-mode” GstAmfEncPATAQMode *

Set the temporal adaptive quantization mode

Flags : Read / Write

Default value : none (0)

Since : 1.24

pre-analysis

“pre-analysis” gboolean

Enable the pre-analysis module

Flags : Read / Write

Default value : false

Since : 1.24

pre-encode

“pre-encode” gboolean

Enable pre-encode assisted rate control

Flags : Read / Write

Default value : false

Since : 1.24

preset

“preset” Amf-av1enc-preset *

Preset

Flags : Read / Write

Default value : default (-1)

qp-i

“qp-i” guint

Constant QP for I frames

Flags : Read / Write

Default value : 26

qp-p

“qp-p” guint

Constant QP for P frames

Flags : Read / Write

Default value : 26

rate-control

“rate-control” Amf-av1enc-rate-control *

Rate Control Method

Flags : Read / Write

Default value : default (-1)

ref-frames

“ref-frames” guint

Number of reference frames

Flags : Read / Write

Default value : 1

smart-access-video

“smart-access-video” gboolean

Enable AMF SmartAccess Video feature

Flags : Read / Write

Default value : false

Since : 1.24

usage

“usage” Amf-av1enc-usage *

Target usage

Flags : Read / Write

Default value : transcoding (0)

Named constants

Amf-av1enc-preset

Encoding quality presets

Members

default (-1) – Default, depends on USAGE

high-quality (0) – High quality

quality (30) – Quality

balanced (70) – Balanced

speed (100) – Speed

Since : 1.22

Amf-av1enc-rate-control

Rate control methods

Members

default (-1) – Default, depends on Usage

cqp (0) – Constant QP

lcvbr (1) – Latency Constrained VBR

vbr (2) – Peak Constrained VBR

cbr (3) – Constant Bitrate

Since : 1.22

Amf-av1enc-usage

Encoder usages

Members

transcoding (0) – Transcoding

low-latency (1) – Low Latency

Since : 1.22

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