Flash player does not seem to work properly on some sites in Ubuntu 16.04.
Try this sample link: http://www.hotstar.com/tv/silicon-valley/silicon-valley-trailer/1000186914
In Firefox, it shows "movie not loaded" and In chrome, it keeps loading but nothing happens. I have tried disabling all add-ons/extensions but still, the problem persists.
Note: It is working in earlier versions but not in 16.04 and later.
In firefox:
This worked for me in two acer laptops: Copy and paste in a terminal window:sudo apt-get install browser-plugin-freshplayer-pepperflash