Play web videos on Fedora

Adobe's flash-player plugin has brought a lot of troubles on Linux systems, especially the 64-bit one.

Recently I bought a new laptop, which runs Fedora. For a fresh installation, flash videos run smoothly, e.g., Youtube. After some time, however, when I opened some other websites, for example ffilms.org, which might contain different types of flash videos, the plugin then stop working. Firefox's plugin-container then eats up almost 100% CPU usage. This abnormality won't go away until a fresh installation. I am fed up.

I then,

sudo yum remove adobe-release flash-plugin
sudo yum install gnash gnash-plugin gstreamer-ffmpeg gstreamer-plugins-ugly

Now the Youtube videos are playable again. Although ffilms.org is still not playable, the browser doesn't crash after the change.

PS, if nspluginwrapper is installed, remove it.