C code for recording screencasts / 3

We need a C component / code for our JAVA application. Component must have an ability to record videos from a screen on mac. - format of video files: mp4 of a good size / quality. Records should be saved to the desktop. - record only a part of the screen (given x,y,w,h parameters) Required buttons: start recording, stop recording, frames per second selection box / text field. We will give you TeamViewer access to our mac if needed for testing.