Lately, whenever I add a video to Dropbox, it converts it to an .Ink file. My recipients are not able to view the .Ink file in this format. Previously, all my files on Dropbox were in MP4 format. These same files are also on my hard drive in MP4 format, but are only on Dropbox in the .Ink format. While I'm able to view the .Ink files, my recipients cannot. Please help. How can I change them back to MP4's on Dropbox?