Postby The DJ » 26 Jun 2009 13:06
See modules/visualization/visual/ for the current Vu meter. This is an audio filter that creates a vout. In order to overlay this, you would need it to render a frame as a sub-filter, like the logo.c filter in modules/video_filter/.
So far, we have no audio filter that does sub-filter behaviour, so beyond this, it's uncharted territory. I'm not even sure if it is possible atm.
Don't use PMs for support questions.