Can anyone recommend a good/safe free spectrum visualizer? Something that can generate fairly nice displays for videos would be good. Can just be the generic type where it displays differing frequencies as bars, but something nicer than the harsh ffmpeg generated ones for example.

Wondering if there's something via a player like vlc I can use, i tried their built-in ones though alrdy and they were bad.

State if you do not have personal experience with the programs suggested.
Foobar2000
Is what I use for visualizations.