libgstreamer-plugins-bad1.0-dev 1.20.3-1ubuntu6 (amd64 binary) in ubuntu lunar

 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 Bad Plug-ins is a set of plug-ins that aren't up to par compared
 to the rest. They might be close to being good quality, but they're missing
 something - be it a good code review, some documentation, a set of tests, a
 real live maintainer, or some actual wide use.
 .
 This package contains development files for GStreamer libraries from the
 "bad" set. The API is not guaranteed to be stable.