There are many web pages that do not require flash but they ask you to install a plugin on your computer to be able to play the video.
In this case in Linux I only knew two alternatives, the vlc mozilla plugin, which is on a small screen but I honestly do not know what it was wrong that I never managed to put it in full screen in Linux (in windows if I can, so if someone can explain it to me I would be grateful) and the gecko media player plugin, which is based on the front end of Gnome Mplayer and of course, for which we use KDE having SMplayer, KMplayer, etc ... it seemed unfair to me that we should install another front end that is not Qt.
This problem was corrected by the developers of Rosa, Mandriva, which together with the creation of Pink Media Player, have created a very interesting plugin that is a good alternative to Gecko Media Player, especially for users of KDE.
It is still a little green but I hope that the errors will be fixed soon.
Now yes, it is up to you to decide which one to stay with.
To install it on Archlinux:
yaourt -S rosa-media-player-plugin
To install it on Chakra:
ccr -S rosa-media-player-plugin
For distros that use .deb, things are a bit more complicated since apparently, only one rpm is available, which must be installed using tools like rpm extract and I honestly don't know how to do it, since I don't have a distro as Debian o Ubuntu in my hands at the moment, so any suggestions will be added to the post :).