The Adobe Flash Player browser plugin lets you view video and animated content in Firefox.
This article has information about testing, installing, updating, uninstalling and troubleshooting the Adobe Flash plugin.
To easily find it use the filters at the top of the page to navigate to your manufacturer's cards.
Also, be sure you are planning to use a compatible flash storage device.
Mozilla has started to distribute two new system add-ons for Firefox 49.0 and Firefox 49.0.1 to address two issues affecting Adobe Flash Player and graphics issues.
This should eliminate hardware or driver compatibility problems with Flash Player.
Flash Player then uses software to scale and display the content.