The best way to preserve the IPTV Archive would maybe distributing them as torrents.
Another way if a server with enough bandwidth is avalible would be making a new site, width a web-player, this could still be done with in the divx format with the divx web-player, unless DivX removes their web-player now that Stage6 is dead, but then there are a lot of replacemnets, another player solution would be a flash player, Action Script 3 supports H.264 video playback in a MP4 container, it's way better then .flv and you can go full HD as fare as I know havn't tested it yet.