What tools and techniques are others using to clip out props in post production. I am using a Hero 3+ Black in at 1440 (1920x1440). To remove the props basically means losing the top 1/4 of the view which is fine, but tools like GoPro studio / Prodrenalin appear to do this to all edges (basically via zoom) which means I am left with a rather crappy looking centre of 960x720. Not completely sure whether it is the loss in resolution or something else about the generation of the new file, but a lot of quality is thrown away. Any clues about how to do this properly ? Perhaps shoot at 2.7K ? Use a different tool, or different technique ? Thanks.