urmusic is a free and open-source software that allows you to easily create your own music visualizer and create a music video for it!
It makes use of hardware acceleration to render frames as fast as possible.
Donations:
Support me on ko-fi: https://ko-fi.com/nasso
Money$hot (M$) is a realtime video special effects/switcher program for people with more than one webcam. M$ uses DirectShow on WinXP/Vista as a compositing engine. M$ can capture, composite, transform (using FreeFrame, etc.), and stream.