Recently active topics in PBwiki tagged with avi

I am trying to add an AVI video to the wiki. it is quite big, 400mb. However, after the first 4mb or so, the connection stops communicating. I use a little upload/download monitor so that's how I can tell, even though the screen says "uploading video" or whatever.
Isn't there a better way of uploading videos? I have no problem uploading and downloading big files over ftp, html, etc. ordinarily.
This is a business-critical video that needs to get out there to our partners so your help would be appreciated.

I've tried AVI , FLV, MOV, WMV formats. Same message :(