svtjpegxsenc

The svtjpegxsenc element does JPEG XS encoding using the Scalable Video Technology for JPEG_XS Encoder (SVT JPEG XS Encoder) library.

See https://jpeg.org/jpegxs/ for more information about the JPEG XS format.

Example launch line |[ gst-launch-1.0 -e videotestsrc ! svtjpegxsenc ! mpegtsmux ! filesink location=out.ts ]| Encodes test video input into a JPEG XS compressed image stream which is then packaged into an MPEG-TS container.

Hierarchy

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstVideoEncoder
                    ╰──svtjpegxsenc

Implemented interfaces

Factory details

Authors: – Tim-Philipp Müller

Classification: – Codec/Encoder/Video

Rank – secondary

Plugin – svtjpegxs

Package – GStreamer Bad Plug-ins

Pad Templates

sink

video/x-raw:
         format: { Y444, Y42B, I420, Y444_10LE, I422_10LE, I420_10LE, Y444_12LE, I422_12LE, I420_12LE }
 interlace-mode: progressive
          width: [ 16, 16384 ]
         height: [ 16, 16384 ]
      framerate: [ 0/1, 2147483647/1 ]
video/x-raw:
         format: { Y444, Y42B, I420, Y444_10LE, I422_10LE, I420_10LE, Y444_12LE, I422_12LE, I420_12LE }
 interlace-mode: interleaved
    field-order: { (string)top-field-first, (string)bottom-field-first }
          width: [ 16, 16384 ]
         height: [ 16, 16384 ]
      framerate: [ 0/1, 2147483647/1 ]

Presence – always

Direction – sink

Object type – GstPad

src

image/x-jxsc:
      alignment: frame
          width: [ 16, 16384 ]
         height: [ 16, 16384 ]
 interlace-mode: { (string)progressive, (string)fields }
       sampling: { (string)YCbCr-4:4:4, (string)YCbCr-4:2:2, (string)YCbCr-4:2:0 }
      framerate: [ 0/1, 2147483647/1 ]

Presence – always

Direction – src

Object type – GstPad

Properties

bits-per-pixel 

“bits-per-pixel” gdouble

Bits per pixel (can be a fractional number, e.g. 3.75)

Flags : Read / Write

Default value : 3

coding-signs 

“coding-signs” Svt-jpeg-xs-enc-coding-signs-type *

Coding signs handling strategy

Flags : Read / Write

Default value : disable (0)

decomp-h 

“decomp-h” gint

Horizontal decomposition (has to be great or equal to decomp-v)

Flags : Read / Write

Default value : 5

decomp-v 

“decomp-v” gint

Vertical decomposition

Flags : Read / Write

Default value : 2

quant-mode 

“quant-mode” Svt-jpeg-xs-enc-quant-mode-type *

Quantization Mode

Flags : Read / Write

Default value : deadzone (0)

rate-control-mode 

“rate-control-mode” Svt-jpeg-xs-enc-rate-control-mode-type *

Rate Control Mode

Flags : Read / Write

Default value : cbr-precinct (0)

slice-height 

“slice-height” gint

The height of each slice in pixel lines (per thread processing unit)

Flags : Read / Write

Default value : 16

threads 

“threads” gint

Number of threads to use (0 = automatic)

Flags : Read / Write

Default value : 0

Named constants

Svt-jpeg-xs-enc-coding-signs-type

Members

disable (0) – Disable
fast (1) – Fast
full (2) – Full

Svt-jpeg-xs-enc-quant-mode-type

Members

deadzone (0) – Deadzone
uniform (1) – Uniform

Svt-jpeg-xs-enc-rate-control-mode-type

Members

cbr-precinct (0) – CBR budget per precinct
cbr-precinct-move-padding (1) – CBR budget per precinct move padding
cbr-slice (2) – CBR budget per slice

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