MetavidWiki extension has been written to take advantage of some of the
scalability features of mediaWiki. So performance should be scalable in
the same way that mediaWiki scales. (ie use a php accelerator,
memchache, squid proxies, mysql slaves & masters etc).
So while its requirements are certainly higher than just vanilla
mediaWiki (metavidWiki also includes semantic mediaWiki)... it should
scale in a similar way.
I can share the relative speed of the two ogg segmenting media serving
solutions:
mod_annodex ... is not that scalable since it does not cache seek
offsets and rewrites ogg pages as it sends out the stream. It takes
around ~700ms for both a cold and hot seek segmented media serving.
oggz-chop .. is faster ~190ms for cold seek and since its just byte wise
serving (does not rewrite media pages) the second request for that
segment will come from OS RAM disk cache ie ~10ms so with a good raid
and sizable amount of ram you could likely only be limited by the
bandwidth of your media server.
oggz-chop is still kind of new but you can grab it from the svn at:
http://svn.annodex.net/liboggz/trunk/src/tools/oggz-chop/
It has a few minor issues with a few frames freezes in VLC and possibly
some audio sync issues with quick time component.
I think Conrad/kfish may be soon addressing the above mentioned issues
and pushing it into the Debian repos soon... I will have to check with him.
peace,
--michael