I've noticed that some of my .MTS video files 't have the "picture icons" that I like (meaning icons that show 3 or 4 frames of the video). Instead, these video files have an icon that shows the VLC logo (VLC being my default player for all video files). Interestingly, the .MTS videos that don't have "picture icons" are all very short, about 5 seconds or less in running time. Is there a way to get picture icons even for these very short .MTS video files?