All clips appear desaturated in Premiere Pro 2020

By a 2nd monitor and set it to appropriate Rec.709 standards. Use the current monitor for basic UI, and the new one for image quality evaluation.

Neil

The trouble with color/saturation/tonality is due to Apple's typical "unique" decisions. They chose to create a new "color space" they call Display P3 ... that isn't like any other color space anywhere else on the planet. All other P3 color-primary spaces are designed for 'dark room' theatrical viewing. Apple took the slightly larger P3 primaries but none of the other standards of P3 spaces.

And compounded things by setting the behavior of the ColorSync utility to equally odd choices as to how it applies color/tonal mapping for Rec.709 media within their Display P3 setup. Depending on the particular computer/monitor and how they're setup in the factory, it can give a range of behaviors, none of them proper for Rec.709 media.

Rec.709 standards require two transforms ... the first is the camera transform, the second is the display transform to essentially reverse the camera transform. Apple's ColorSync utility applies the first part, the camera transform ... but not the second part, the display transform.

So ... for Rec,709 media, the remapping of the Rec.709 within the larger (and differently shaped) P3 primaries are off, and due to the odd partial Rec.709 application, the tonalities are off also.

Your best bet is to set the option in the Preferences to "Enable Display Color Management" ... which tells Premiere to read the installed ICC profile for a monitor and try to remap its internal displays to something appropriate for the Rec.709 media Premiere is designed to work properly with.

Neil

Best to set up a sequence by dragging a mts clip into an empty timeline. (hdv might nog be correct as i am seeing interlaced artifacts.

As for the color read this:

FAQ: Why does my footage look darker in Premiere