# vp9alphadecodebin

Use two `vp9dec` instance in order to decode VP9 alpha channel.

## Hierarchy

    GObject
        ╰──GInitiallyUnowned
            ╰──GstObject
                ╰──GstElement
                    ╰──GstBin
                        ╰──GstAlphaDecodeBin
                            ╰──vp9alphadecodebin

## Implemented interfaces

    GstChildProxy

## Factory details

Authors: – Nicolas Dufresne <nicolas.dufresne@collabora.com></nicolas.dufresne@collabora.com>

Classification: – `Codec/Decoder/Video`

Rank – primary + 10

Plugin – codecalpha

Package – GStreamer Bad Plug-ins

## Pad Templates

### `sink`

    video/x-vp9:
        codec-alpha: true
          alignment: super-frame

Presence – always

Direction – sink

Object type – GstPad

### `src`

    ANY

Presence – always

Direction – src

Object type – GstPad

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