It would be really nice to have an open source system similar to camtasia that allowed me to capture my desktop, maybe my webcam, and my audio. Then the video could be uploaded to Matterhorn after I fill in appropriate metadata.
This could be don by creating new gstsrcs that chould inherit the gstpushsrc: http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstPushSrc.html
it should send data from screenshots of the desktop
see also getdesktopwindow
Per http://opencast.3480289.n2.nabble.com/JIRA-Ticket-Cleanup-proposal-td7475080.html, this has been bulk resolved as won't fix. If this is still important to you please reopen and we can triage as appropriate.