Gopro and Shotcut Newbie

It would really help people to help you if you listed:

  1. The speciifications of your computer;
  2. The operating system you are running on;
  3. The version of Shotcut you are using.
  4. the details of the file you are editing (I use mediainfo and cut and paste from the menu item View->Text.

A screenshot of the whole Shotcut window showing in particular the timeline and the filters panel is also useful. See also the suggestions made here: