I’m not sure if twitter uses Flash. You can test flash on the following site:
Also make sure that the plugin is enabled in about:addons in Firefox. Click on ‘Plugins’ on the left hand side of the screen and if it installed properly you should see ‘Shockwave Flash’
Click on the ‘…’ menu and select ‘Ask to Activate’
When you go to a site with flash you should see a box that says ‘Run Adobe Flash’
I also had to turn off enhanced tracking protection for the above site to wok properly.
echo ‘##### Extracing ffmpeg rpm package into tmp dir folder’
rpm2cpio tmp/flash_latest.rpm | cpio -D tmp/ -idmv #Just copying the libflashplayer.so does the trick to enable Flash for Firefox.
echo '##### Copying libflashplayer.so to '$plugin_home
cp tmp/usr/lib64/browser-plugins/libflashplayer.so $plugin_home/