GstPipeline Top-level bin with scheduling and pipeline management functionality. In almost all cases, you'll want to use a GstPipeline when creating a filter graph. The GstPipeline will manage all the scheduling issues, including threading, as well as provide simple interfaces to common functions, like 'Play'. FIXME: this is entirely blue-sky @name: @Returns: destroys the pipeline @pipeline: GstPipeline to destroy @pipeline: