GStreamer is a library of components that can be hooked together in complex pipelines. It can be used for filtering, converting formats, and mixing. It can handle both audio and video formats, but this chapter covers only audio. It looks at the user-level mechanisms for using GStreamer and also the programming model for linking GStreamer components . A reference is given for writing new components.
Here are some resources:
Multipurpose multimedia processing with GStreamer ( www.ibm.com/developerworks/aix/library/au-gstreamer.html?ca=dgr-lnxw07GStreamer ) by Maciej Katafiasz
GStreamer plug-in ...