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Properties
| gdouble | brightness | Read / Write |
| gdouble | contrast | Read / Write |
| gdouble | hue | Read / Write |
| gdouble | saturation | Read / Write |
Object Hierarchy
GObject ╰── GInitiallyUnowned ╰── GstObject ╰── GstElement ╰── GstBaseTransform ╰── GstGLBaseFilter ╰── GstGLFilter ╰── GstGLColorBalance
Description
Adjusts brightness, contrast, hue, saturation on a video stream.
Example launch line
1 |
gst-launch-1.0 videotestsrc ! glupload ! glcolorbalance saturation=0.0 ! glcolorconvert ! gldownload ! ximagesink |
This pipeline converts the image to black and white by setting the saturation to 0.0.
Synopsis
Element Information
plugin |
opengl |
author |
Matthew Waters <matthew@centricular.com> |
class |
Filter/Effect/Video |
Element Pads
name |
sink |
direction |
sink |
presence |
always |
details |
video/x-raw(memory:GLMemory), format=(string)RGBA, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], texture-target=(string){ 2D, external-oes } |
| video/x-raw(memory:GLMemory, meta:GstVideoOverlayComposition), format=(string)RGBA, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], texture-target=(string){ 2D, external-oes } |
name |
src |
direction |
source |
presence |
always |
details |
video/x-raw(memory:GLMemory), format=(string)RGBA, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], texture-target=(string){ 2D, external-oes } |
| video/x-raw(memory:GLMemory, meta:GstVideoOverlayComposition), format=(string)RGBA, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], texture-target=(string){ 2D, external-oes } |
Property Details
The “brightness” property
“brightness” gdouble
brightness.
Flags: Read / Write
Allowed values: [-1,1]
Default value: 0
The “contrast” property
“contrast” gdouble
contrast.
Flags: Read / Write
Allowed values: [0,2]
Default value: 1
The “saturation” property
“saturation” gdouble
saturation.
Flags: Read / Write
Allowed values: [0,2]
Default value: 1