gst-gtklaunch-1.0

gst-gtklaunch-1.0 is an utility for testing and controlling live GStreamer 1.0 pipelines and elements. It will inspect the specified pipeline to create the GTK GUI automagically using introspection.

Features

• gst-launch-type syntax
• pipeline controls: play, pause, stop, send_eos
• pipeline states display: current state, current position, duration (if available)
• pipeline editing and relaunching
• automatic video sink embedding
• foldable sidebar containing properties control widgets for most property types
• pipeline graph (.dot format) displaying
• if you add something like "tee. ! queue ! jpegenc ! fakesink name=dumpsink", you will be able to save jpeg thumbnails to disk

Usage

Will launch the gst-launch-compliant pipeline description:

gst-gtklaunch-1.0 videotestsrc ! xvimagesink

If no argument is given, it will launch the pipeline description found in the gst-gtklaunch-1.0/config.py file

Adding "jpegenc ! fakesink name=dumpsink" will show a "take picture" button

gst-gtklaunch-1.0 videotestsrc ! tee name=tee ! queue ! xvimagesink tee. ! queue ! jpegenc ! fakesink name=dumpsink

Installation

Install this package as a python egg:

./setup.py install

gst-gtklaunch-1.0 currently requires (Ubuntu package names):

• python3-gi
• gir1.2-gtk-3.0
• gir1.2-gstreamer-1.0
• graphviz and xdot

An Arch User Repository package is also available.

Options

Check the gst-gtklaunch-1.0/config.py file for options and examples.

The config file contains static declarations for:

• ignore-list: properties having one of these names will not be introspected
• pipeline_desc: gstreamer pipeline description, in gst-launch-like syntax. caps need to be set the following way (without the quotes):

pipeline_desc = "videotestsrc ! video/x-raw, format=(string)YUY2, width=(int)320, height=(int)240, framerate=(fraction)15/1 ! videoconvert !  videobalance ! queue ! xvimagesink"