jpegenc

Encodes jpeg images.

Example launch line

 gst-launch-1.0 videotestsrc num-buffers=50 ! video/x-raw, framerate='(fraction)'5/1 ! jpegenc ! avimux ! filesink location=mjpeg.avi

a pipeline to mux 5 JPEG frames per second into a 10 sec. long motion jpeg avi.

Hierarchy

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstVideoEncoder
                    ╰──jpegenc

Implemented interfaces

Factory details

Authors: – Wim Taymans

Classification: – Codec/Encoder/Image

Rank – primary

Plugin – jpeg

Package – GStreamer Good Plug-ins

Pad Templates

sink

video/x-raw:
         format: { I420, YV12, YUY2, UYVY, Y41B, Y42B, YVYU, Y444, NV21, NV12, RGB, BGR, RGBx, xRGB, BGRx, xBGR, GRAY8 }
          width: [ 1, 2147483647 ]
         height: [ 1, 2147483647 ]
      framerate: [ 0/1, 2147483647/1 ]

Presence – always

Direction – sink

Object type – GstPad

src

image/jpeg:
          width: [ 1, 65535 ]
         height: [ 1, 65535 ]
      framerate: [ 0/1, 2147483647/1 ]
     sof-marker: { (int)0, (int)1, (int)2, (int)4, (int)9 }

Presence – always

Direction – src

Object type – GstPad

Properties

idct-method 

“idct-method” GstIDCTMethod *

The IDCT algorithm to use

Flags : Read / Write

Default value : ifast (1)

quality 

“quality” gint

Quality of encoding

Flags : Read / Write

Default value : 85

snapshot 

“snapshot” gboolean

Send EOS after encoding a frame, useful for snapshots.

Flags : Read / Write

Default value : false

Since : 1.14

Named constants

GstIDCTMethod

Members

islow (0) – Slow but accurate integer algorithm
ifast (1) – Faster, less accurate integer method
float (2) – Floating-point: accurate, fast on fast HW

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