`gst-launch` is a simple script-like commandline application that can be
used to test pipelines. For example, the command `gst-launch
-audiotestsrc ! audioconvert !
+audiotestsrc ! audioconvert !
audio/x-raw,channels=2 ! alsasink` will run a pipeline which generates a
sine-wave audio stream and plays it to your ALSA audio card.
`gst-launch` also allows the use of threads (will be used automatically
what arguments) an element supports. Run `gst-inspect fakesrc` to get an
idea of what it does. See the manual page of `gst-inspect` for more
information.
-