I want to add that it seems as if Videopad has many in-built effects which Shotcut does not (I have never used Videopad, though). On the other hand Shotcut has various ways to add different effects/filters like the aforementioned WebVfx framework, GL transitions or from other video editors adapted filters (User-created front ends for Shotcut filters that have not been added to Shotcut). Additionally, many forum members are very helpful to achieve a desired effect.