vaapimpeg2dec

vaapimpeg2dec decodes from MPEG2 bitstreams to surfaces suitable for the vaapisink or vaapipostproc elements using the installed VA-API back-end.

In the case of OpenGL based elements, the buffers have the GstVideoGLTextureUploadMeta meta, which efficiently copies the content of the VA-API surface into a GL texture.

Also it can deliver normal video buffers that can be rendered or processed by other elements, but the performance would be rather bad.

Example launch line

 gst-launch-1.0 filesrc location=~/sample.mpg ! mpegpsdemux ! vaapimpeg2dec ! vaapisink

Hierarchy

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstVideoDecoder
                    ╰──vaapimpeg2dec

Factory details

Authors: – Gwenole Beauchesne , Halley Zhao , Sreerenj Balachandran , Wind Yuan

Classification: – Codec/Decoder/Video/Hardware

Rank – primary

Plugin – vaapi

Package – gstreamer-vaapi

Pad Templates

sink

video/mpeg:
    mpegversion: 2
   systemstream: false

Presence – always

Direction – sink

Object type – GstPad

src

video/x-raw(memory:VASurface):
         format: { ENCODED, NV12, YV12, I420, YUY2, UYVY, Y444, GRAY8, P010_10LE, VUYA, Y210, Y410, ARGB, xRGB, RGBA, RGBx, ABGR, xBGR, BGRA, BGRx, RGB16, RGB, BGR10A2_LE }
          width: [ 1, 2147483647 ]
         height: [ 1, 2147483647 ]
      framerate: [ 0/1, 2147483647/1 ]

video/x-raw(meta:GstVideoGLTextureUploadMeta):
         format: { RGBA, BGRA }
          width: [ 1, 2147483647 ]
         height: [ 1, 2147483647 ]
      framerate: [ 0/1, 2147483647/1 ]
video/x-raw:
         format: { ENCODED, NV12, YV12, I420, YUY2, UYVY, Y444, GRAY8, P010_10LE, VUYA, Y210, Y410, ARGB, xRGB, RGBA, RGBx, ABGR, xBGR, BGRA, BGRx, RGB16, RGB, BGR10A2_LE }
          width: [ 1, 2147483647 ]
         height: [ 1, 2147483647 ]
      framerate: [ 0/1, 2147483647/1 ]

video/x-raw(memory:DMABuf):
         format: { I420, YV12, RGBA }
          width: [ 1, 2147483647 ]
         height: [ 1, 2147483647 ]
      framerate: [ 0/1, 2147483647/1 ]

Presence – always

Direction – src

Object type – GstPad

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