feature-rich screen recorder that supports X11 and OpenGL - GLInject library

 SimpleScreenRecorder is a feature-rich screen recorder that supports X11 and
 OpenGL. It has a Qt-based graphical user interface. It can record the entire
 screen or part of it, or record OpenGL applications directly. The recording
 can be paused and resumed at any time. Many different file formats and codecs
 are supported.
 .
 This package contains the GLInject library.