Test video https://twitter.com/NHL/status/740577888735526912. In ChromiumUnsuccessfuly attemptsI followed the guide here > https://get.adobe.com/flashplayer/ > 64 bit apt Ubuntu 10+. After install, I get the notice you already have the plugin. masi@masi:~$ sudo apt-get install adobe-flash-properties-gtkmasi@masi:~$ sudo apt-get install adobe-flashpluginIn Firefox, the .swf files work with the plugin browser-plugin-gnash however. Internal differences of two systems - Ubuntu's glue!Please, see my answer about Debian 8.5 for the case where the hardware is more stable: Asus Zenbook UX303UA. The solution works with only a single package in Debian, while Ubuntu requires also the second package. This proposes me that there is something internal going on in Ubuntu, which should be profiled and fixed. Flash Player: gnash 0.8.11Internet browser: Chromium, 51.x, Google Chrome 52.xSystem: Ubuntu 16.04 64 bitHardware: Macbook Air 2013-mid   
Why internal differences in Flash Player of Ubuntu and Debian?
debian;ubuntu;chrome;adobe flash
Gnash can't work with Chromium. Uninstall it first before doing the following installation. The solution is to install Google's PepperFlash plugin (disclaimer: nonfree) and the freshplayer component:sudo apt install pepperflashplugin-nonfree browser-plugin-freshplayer-pepperflash