In the video I'll discuss a few of the differences between parametric EQ's and graphic EQ's, when used in a guitar chain on a pedalboard. I'll also explain a bit of how and why to use each one. Note that this isn't an exhaustive academic version of how they work electronically, rather it's a "how to" for those interested in using them to shape guitar tone.
Also, sorry about the lack of the guitar display at 7:45... I didn't notice until after it was too late.
The "too long didn't watch" version is that they both can do the same thing, but the parametric eq allows for a wider range of frequencies as well as pinpointing frequencies a bit easier. However, the graphic can be a bit simpler to use.