vacompositor

A video compositing element that uses VA-API VPP to accelerate the compose, blending, and scaling of multiple inputs into one output.

Example launch line

 gst-launch-1.0 videotestsrc                                 \
   ! "video/x-raw,format=(string)NV12,width=640,height=480"  \
   ! tee name=testsrc ! queue ! vacompositor name=comp       \
     sink_1::width=160 sink_1::height=120 sink_1::xpos=480   \
     sink_1::ypos=360 sink_1::alpha=0.75                     \
   ! autovideosink testsrc. ! queue ! comp.

Hierarchy

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstAggregator
                    ╰──GstVideoAggregator
                        ╰──vacompositor

Implemented interfaces

Factory details

Authors: – U. Artie Eoff

Classification: – Filter/Editor/Video/Compositor/Hardware

Rank – none

Plugin – va

Package – GStreamer Bad Plug-ins

Pad Templates

sink_%u

video/x-raw(memory:VAMemory):
         format: { NV12, I420, YV12, YUY2, RGBA, BGRA, P010_10LE, ARGB, ABGR }
          width: [ 1, 2147483647 ]
         height: [ 1, 2147483647 ]
      framerate: [ 0/1, 2147483647/1 ]
video/x-raw:
         format: { VUYA, GRAY8, NV12, NV21, YUY2, UYVY, YV12, I420, P010_10LE, RGBA, BGRA, ARGB, ABGR }
          width: [ 1, 2147483647 ]
         height: [ 1, 2147483647 ]
      framerate: [ 0/1, 2147483647/1 ]

Presence – request

Direction – sink

Object type – GstVaCompositorPad

src

video/x-raw(memory:VAMemory):
         format: { NV12, I420, YV12, YUY2, RGBA, BGRA, P010_10LE, ARGB, ABGR }
          width: [ 1, 2147483647 ]
         height: [ 1, 2147483647 ]
      framerate: [ 0/1, 2147483647/1 ]
video/x-raw:
         format: { VUYA, GRAY8, NV12, NV21, YUY2, UYVY, YV12, I420, P010_10LE, RGBA, BGRA, ARGB, ABGR }
          width: [ 1, 2147483647 ]
         height: [ 1, 2147483647 ]
      framerate: [ 0/1, 2147483647/1 ]

Presence – always

Direction – src

Object type – GstAggregatorPad

Properties

device-path 

“device-path” gchararray

It shows the DRM device path used for the VA operation, if any.

Flags : Read

Default value : NULL

scale-method 

“scale-method” GstVaScaleMethod *

Sets the scale method algorithm to use when resizing.

Flags : Read / Write

Default value : default (0)

The results of the search are