Box Ending Support for Previewing Flash Files
• On 9/5/2016, support for previewing flash video files (.flv, .f4v and .swf file extensions) will no longer be available in the Box web interface. Here is the list of file types that Box preview supports. http://mkt.box.com/s0Zs0j70mO1w0C0y6300s0J
• Users will need to use an alternative to viewing flash video files, such as downloading them and using a desktop application.