is the mac mini 16gb m1 appropriate for video editing at 1080p/2K…? At 3K? At 4K?

Q - " is the mac mini 16gb m1 appropriate for video editing at 1080p/2K…? At 3K? At 4K?n"

A - It appears to meet the Specification you have outlined above and will depend in the Display(s) being used with this computer

From the " Specification " from the suppled link above

Video Support

• Simultaneously supports up to two displays:
• One display with up to 6K resolution at 60Hz connected via Thunderbolt >> and << one display with up to 4K resolution at 60Hz connected via HDMI
• Thunderbolt 3 digital video output supports
• Native DisplayPort output over USB‑C
• Thunderbolt 2, DVI, and VGA output supported using adapters (sold separately)
• HDMI display video output
• Support for one display with up to 4K resolution at 60Hz
• DVI output using HDMI to DVI Adapter (sold separately)