svthevcenc

This element encodes raw video into H265 compressed data.

Hierarchy

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstVideoEncoder
                    ╰──svthevcenc

Implemented interfaces

Factory details

Authors: – Yeongjin Jeong

Classification: – Codec/Encoder/Video

Rank – primary

Plugin – svthevcenc

Package – GStreamer Bad Plug-ins

Pad Templates

sink

video/x-raw:
         format: { I420, Y42B, Y444, I420_10LE, I422_10LE, Y444_10LE }
      framerate: [ 0/1, 2147483647/1 ]
          width: [ 64, 8192 ]
         height: [ 64, 4320 ]

Presence – always

Direction – sink

Object type – GstPad

src

video/x-h265:
      framerate: [ 0/1, 2147483647/1 ]
          width: [ 64, 8192 ]
         height: [ 64, 4320 ]
  stream-format: byte-stream
      alignment: au
        profile: { (string)main, (string)main-10, (string)main-422-10, (string)main-444, (string)main-444-10 }

Presence – always

Direction – src

Object type – GstPad

Properties

aud 

“aud” gboolean

Use AU (Access Unit) delimiter

Flags : Read / Write

Default value : false

b-pyramid 

“b-pyramid” GstSvtHevcEncBPyramid *

Number of hierarchical layers used to construct GOP

Flags : Read / Write

Default value : 4-level-hierarchy (3)

baselayer-mode 

“baselayer-mode” GstSvtHevcEncBaseLayerMode *

Random Access Prediction Structure type setting

Flags : Read / Write

Default value : B-frame (0)

bitrate 

“bitrate” guint

Bitrate in kbit/sec

Flags : Read / Write

Default value : 7000

config-interval 

“config-interval” guint

Send VPS, SPS and PPS Insertion Interval per every few IDR. 0: disabled

Flags : Read / Write

Default value : 0

cores 

“cores” guint

Number of logical cores to be used. 0: auto

Flags : Read / Write

Default value : 0

enable-open-gop 

“enable-open-gop” gboolean

Allow intra-refresh using the CRA, not IDR

Flags : Read / Write

Default value : true

enable-scd 

“enable-scd” gboolean

Use the scene change detection algorithm

Flags : Read / Write

Default value : true

insert-vui 

“insert-vui” gboolean

Insert VUI NAL in stream

Flags : Read / Write

Default value : false

key-int-max 

“key-int-max” gint

Distance Between Intra Frame inserted: -1=no intra update. -2=auto

Flags : Read / Write

Default value : -2

lookahead 

“lookahead” guint

Look ahead distance

Flags : Read / Write

Default value : 40

pred-struct 

“pred-struct” GstSvtHevcEncPredStruct *

Prediction Structure used to construct GOP

Flags : Read / Write

Default value : random-access (2)

qp-i 

“qp-i” guint

QP value for intra frames in CQP mode

Flags : Read / Write

Default value : 25

qp-max 

“qp-max” guint

Maximum QP value allowed for rate control use

Flags : Read / Write

Default value : 48

qp-min 

“qp-min” guint

Minimum QP value allowed for rate control use

Flags : Read / Write

Default value : 10

rc 

“rc” GstSvtHevcEncRC *

Bitrate control mode

Flags : Read / Write

Default value : cqp (0)

socket 

“socket” gint

Target socket to run on. -1: all available

Flags : Read / Write

Default value : -1

speed 

“speed” guint

Encoding preset [0, 11] (e.g. 0 is the highest quality mode, 11 is the highest), [0, 11] (for >= 4k resolution), [0, 10] (for >= 1080p resolution), [0, 9] (for all resolution)

Flags : Read / Write

Default value : 7

tile-col 

“tile-col” guint

Tile count in the Column

Flags : Read / Write

Default value : 1

tile-row 

“tile-row” guint

Tile count in the Row

Flags : Read / Write

Default value : 1

tune 

“tune” GstSvtHevcEncTune *

Quality tuning mode

Flags : Read / Write

Default value : oq (1)

vbv-buffer-size 

“vbv-buffer-size” guint

VBV buffer size in kbits for VBR mode

Flags : Read / Write

Default value : 0

vbv-max-rate 

“vbv-max-rate” guint

VBV maxrate in kbit/sec for VBR mode

Flags : Read / Write

Default value : 0

Named constants

GstSvtHevcEncBPyramid

Members

flat (0) – Flat
2-level-hierarchy (1) – 2-Level Hierarchy
3-level-hierarchy (2) – 3-Level Hierarchy
4-level-hierarchy (3) – 4-Level Hierarchy

GstSvtHevcEncBaseLayerMode

Members

B-frame (0) – Use B-frames in the base layer pointing to the same past picture
P-frame (1) – Use P-frames in the base layer

GstSvtHevcEncPredStruct

Members

low-delay-P (0) – Low Delay Prediction Structure with P/p pictures
low-delay-B (1) – Low Delay Prediction Structure with B/b pictures
random-access (2) – Random Access Prediction Structure

GstSvtHevcEncRC

Members

cqp (0) – Constant QP Control
vbr (1) – Variable Bitrate Contorol

GstSvtHevcEncTune

Members

sq (0) – Visually Optimized Mode
oq (1) – PSNR/SSIM Optimized Mode
vmaf (2) – VMAF Optimized Mode

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