overlay a line

[spitzauer]

Hi,

i'm new in GTK & gstreamer programming. But i want to know if it's possible to solve my problem with GTK and gstreamer.

I want a tool like cSwing (www.cswing.com) where i can analyze my golf swing.
I think an open source solution doesn't exist yet?

With this (code.google.com/p/gst-player) small example code i can play a video with gstreamer.
My next step would be to draw for example a line in a Video Frame. But how can i do this?

Any suggestions or example project?

Thanks and Regards
Spitzauer