Hi. I have a number of videos which are actually 640x480 but displayed as 1920x1080 with black pillars. I have no idea why the videos were created this way (they're inherited from an outside source) but I need to removed the black bars and resize the video to its correct aspect. Is anyone able to point me to a command line that would do this? I'm not completely new to ffmpeg, but previous attempts have cropped the bars but then distorted the video, so clearly I'm not following something correctly. Any assistance greatly appreciated.