record Webcam with Text overlays to disk (via SYPHON ?)

Hi there,

never had any problems blending multiple video sources live to a jit.window and putting shapes and text on top of it.
However, I'm not able to record the simplest composition to disk. Would anybody please give me a hint of how a speedy HD-Video recording (jit.grab) solution with text overlays (e.g. jit.gl.text3d) could look like?

Already did some tests with jit.asyncread (slow?), jit.record (slow?) and syphon. Right now to me the Syphon recorder seems to be the only solution that works reliably fast while not slowing down my fairly new iMac that much. But in this case I only get one single video source out of max into the syphon recorder.

Seems that I have quite a serious lack of basic jitter, openGL, rendering - knowledge.
Hope you can help me.

THX
snuef