I'm using the gecko-mediaplayer plugin (formerly "mplayerplug-in"). The totem plugin was not always working correctly with Opera, and I'm actually depending on the [Copy URL] feature of gecko-mediaplayer.
However that plugin does some inept buffering of videos. It seems to default to 20% caching regardless of what you set in the preferences window. This is quite annoying for big video files. But appearantly it's by design http://groups.google.com/group/gecko-mediaplayer/browse_thread/thread/b7f0f5a3cedc8979
The Gentoo forums listed some workaround http://forums.gentoo.org/viewtopic-t-816690.html - but
~/.config/gecko-mediaplayer/gecko-mediaplayer.conf is not working in the Ubuntu version.
Does anyone know the actual way to configure the cache= size. Which is the real configuration filename under Ubuntu?
I've now tried that gconf registry, but
apps > gecko-mediaplayer > preferenes > cache has no effect either.