How can you crop MP4 video to cut off unnecessary section and focus on the certain part you want? Or do you wonder how to remove unsatisfactory black bars? Whether can you make an MP4 video matchable to fit the widescreen device? Truthfully, there are all sorts of similar questions you may have in cropping aspect. In despite of the circumstances, in this post we will introduce a simple tool to guide you to crop MP4 and also thoughtful recommend two worth-trying MP4 video croppers for you.