codecalpha

This plugin contains a set of utilities that helps handling alpha encoded streams as produced by some WebM streams using VP8/VP9. The elements are meant to be used in decoder wrappers which allows playbin to automatically handle these streams.

codecalphademux will produce two streams out of a stream of buffers holding the GstVideoCodecAlphaMeta. The presence of the meta is indicated by the usage of the field codec-alpha=(boolean)true in the caps. This is only applicable to VP8 and VP9 for now.

(from GStreamer Bad Plug-ins)

Name	Classification	Description
alphacombine	Codec/Demuxer	Use luma from an opaque stream as alpha plane on another
codecalphademux	Codec/Demuxer	Extract and expose as a stream the CODEC alpha.

Subpages:

alphacombine – Use luma from an opaque stream as alpha plane on another

codecalphademux – Extract and expose as a stream the CODEC alpha.

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