The fact I can't update the thumbnails of my videos is incredibly frustrating. I typically upload videos of interviews and Box always picks some thumbnail image of me with my mouth wide open or some other ludicrous face. Imagine trying to send your boss or the head of your research team a video link and it has a stupid picture of yourself on it? It's humiliating. Every other video uploading software I have used has the option to update thumbnails...currently I have to try and trim the video in places to see if it will pick another image which is time-consuming. Uploading barely different versions of the same hour-long video 5 times until Box picks another image seems non-optimal.