In that case your project resolution width x height has to be the same as your video’s width x height, (or rather the ratio width:height must match) otherwise you will always get black bands at either the top and bottom or at the sides.
In that case your project resolution width x height has to be the same as your video’s width x height, (or rather the ratio width:height must match) otherwise you will always get black bands at either the top and bottom or at the sides.