GoPro Hero 3 + Adobe Premiere Elements 14 black border I have imported my videos into Elements as a test and tried a lot of different combinations to remove the black borders, but nothing seems to work.

The source file info it in the image below:



I'm unsure which settings to go for when setting up the project...



And I am also unsure of which to select in the export...



Project settings...



I can see that the file is 1280*960, but I cant seem to find this setting, any help would be greatly appreciated.
You need to select a Custom size, because 1280x960 is not an HD ratio (16:9) but something else (4:3).  The black borders are the program's way of telling you "the image aspect ratio doesn't fit the target aspect ratio, so I'm going to shrink it to fit".  YouTube, for example, will also do this to your video, as will any HDTV.  So unless you have a 4:3 end-to-end pipeline (which you might have if you are "projecting" the video onto a virtual 4:3 screen within some animation), something somewhere is going to have to crop or fill your image in ways you don't like.  The best alternative is for you to make the decision how you are going to fit it into a 16:9 world.