GStreamer development files for libraries from the "extra" set

 GStreamer is a streaming media framework, based on graphs of filters
 which operate on media data. Applications using this library can do
 anything from real-time sound processing to playing videos, and just
 about anything else media-related. Its plugin-based architecture means
 that new data types or processing capabilities can be added simply by
 installing new plug-ins.
 .
 GStreamer Extra Plug-ins is a set of plug-ins that upstream still
 keeps in the Bad set, but are considered rather stable and depended
 on by applications in the main repositories.
 .
 This package contains development files for GStreamer libraries from the
 Extra set. The API is not guaranteed to be stable.