GStreamer

gst−xmllaunch − build and run a GStreamer pipeline from an XML serialization

gst−xmllaunch [OPTION...] XML−FILE [ ELEMENT.PROPERTY=VALUE ... ]

gst−xmllaunch is a tool that is used to build and run a basic GStreamer pipeline, loading it from an XML description. You can produce the XML description using gst-launch-0.10(1) with the -o option or by calling gst_xml_write_file() in your own app.

A simple commandline looks like:

gst−xmllaunch my−pipeline.xml filesrc0.location=music.mp3

This sets the location property of the element named filesrc0 to the value "music.mp3". See gst−launch(1) for syntax on setting element names, and gst−inspect to see what properties various elements have.

You can pass "-" as the XML−FILE to read from stdin.

XML−FILE can be a URI as well, thanks to the wizardry of libxml. I’m not really sure what all is supported, it seems http works just fine though.

gst−xmllaunch accepts the following options:

−−help

Print help synopsis and available FLAGS

−−silent

Do not output status information

−−exclude=TYPE, −XTYPE

Do not output status information of TYPE

−−output=FILE, −oFILE

Save XML representation of pipeline to FILE and exit

−−gst−info−mask=FLAGS

GStreamer info flags to set (list with −−help)

−−gst−debug−mask=FLAGS

GStreamer debugging flags to set (list with −−help)

−−gst−mask=FLAGS

GStreamer info and debugging flags to set (list with −−help)

−−gst−plugin−spew

GStreamer info flags to set Enable printout of errors while loading GStreamer plugins

−−gst−plugin−path=PATH

Add directories separated with ’:’ to the plugin search path

gst−feedback(1), gst−inspect(1), gst−launch(1), gst−typefind(1)

The GStreamer team at http://gstreamer.freedesktop.org/