Youtube video of xpsa spectrum analyzer:
It shows some basic features.
This is a HD video in 1680x1050 format. It may look bit shaky, as the PC was heavy loaded, but in reality the spectral display is 25 fps.
Seems youtube re-encoded it, lost some detail. But now file is shorter, original was 200 MB, re-enoded it for lower bandwidth was 16 MB, uploaded that, and now?