G JACK Transport

gjacktransport is a standalone application that provides access to the jack audio connection kit's, JACK transport mechanism via a dynamic graphical slider.

in other words: this software allows to seek Audio/Video media files when they are played along jack transport. Intended for audio-engineers or A/V editors that work with arodour, ecasound, hydrogen and/or xjadeo,..

Additionally it provides 'gjackclock'. A “Big Clock” display for jack-transport.


gjacktransport, qjackctrl and xjadeo

3 gjacktransports


Build and Install


compile from tar.gz release:

tar tzf .../gjacktransport-?.?.?.tgz 
cd gjacktransport-*
./configure && make
sudo make install

to get and compile from SCM:

git clone git://gjacktransport.git.sourceforge.net/gitroot/gjacktransport/gjacktransport
cd gjacktransport
#git pull 
./autogen.sh && make
sudo make install

Contact Support for feeback, bug-reports and suggestions.


  • [dynamic|bidir|touchable] slider to control jack-transport
  • jack connect/disconnect
  • set slider start and end points in various units
  • local-memory: remember start/end points
  • auto-zoom and reposition slider
  • LASH support
  • Configurable keybindings to control transport state.

missing features

  • dynamic create/name memory-presets.
  • .rc for non LASH users.
  • documentation, remaining FIXME's and TODO in the source
  • SMPTE / static video-fps (get fps info from jack time master)


see also:

oss/gjt/gjacktransport.txt · Last modified: 26.06.2012 14:16 by rgareus