Gst-nvjpegenc

The Gst-nvjpegenc plugin encodes images on both dGPU and Jetson platforms. It is the preferred method for encoding JPEG images. On the dGPU platform this plugin is based on the libnvjpeg library, part of the CUDA toolkit. On Jetson it uses a platform-specific hardware accelerator. The plugin accepts I420, RGB input on dGPU platform and I420, NV12 input on Jetson platform and produces JPEG encoded bitstream. On Jetson platform nvjpegenc can also accept SW RAW buffers in I420, YV12, GRAY8 formats.

Inputs and Outputs

• Inputs

  • Gst Buffer in I420, RGB format (dGPU)

  • Gst Buffer in I420, NV12 format (Jetson)

  • Gst SW Buffer in I420, YV12, GRAY8 format (Jetson)

• Control parameters

  • Enableperf (Jetson Only)

  • idct-method (Jetson Only)

  • quality (Both Jetson and dGPU)

  • OutputGray (dGPU only)

• Output

  • Gst Buffer with encoded output in JPEG format

Features

The following table summarizes the features of the Gst-nvjpegenc plugin.

Gst-nvjpegenc plugin features

Feature	Description	Release
Supports JPEG Encode	—	DS 6.3

Gst Properties

The following table summarizes the Gst properties of the Gst-nvjpegenc plugin.

Gst-nvjpegenc plugin gst properties

Property	Meaning	Type and Range	Example and Notes	Platforms
quality	quality value for encoding	Integer, 0 to 100	Quality=90	dGPU, Jetson
Enableperf	Enable encode time measurement	Boolean	Enableperf=1	Jetson
Idct-method	IDCT algorithm to use	Enum 0: iSlow 1: iFast 2: Float	Idct-method=2	Jetson
OutputGray	Output JPEG image in GRAYSCALE, needs I420 INPUT	Boolean	OutputGray=1	dGPU