Screen capture

Useful for making vids without using some external recorder.

With recordmydesktop

install

• Install recordmydesktop
  • for Ubuntu open synaptic and install recordmydesktop & gtkrecordmydesktop
  • got an error ("unable to load libjack.so") so i also installed libjack-dev,jack-tools and that seemed to work.

GUI use

• start gtkrecordmydesktop
• to capture audio for program output you need to use jack.
  • open qjackctl and start
  • open audio program and connect it to jack
  • in gtkrecordmydesktop select advanced>sound>use jack for audio capture.
  • select desired input/output port.
  • link is here audio setup
• start video program
• use select window limit record area - you can also drag on preview image.
• default fps is 15 if faster is needed then change in advanced settings.
• hit record
• to stop recording use the square button in the taskbar.

Command line use

• start video program
• use xwininfo to get the window id of the video program. (just run and click the window needed)
• start recording :

recordmydesktop -windowid 0x6800007  <<<--- your window ID

• pressing ctrl+c should stop capture - then the captured frames will be encoded. (pressing ctrl+c again will abort capture)
• the captured file is save in the current dir with prefix "out". file type is ogv by default.

Potential issues

• A few dropped frames this may cause de-syncing over a long time, might be better on lower res screen.
• On the applet viewer the manu bar is also captured we may want to

TODO

• Test capture audio too. only can caapture program output with jack