The torrent files have game first, author last, and the movie files have author first, game last.
This is somewhat arbitrary, and not even all movie files follow the formula. There are 13 movies that have a differently named movie file; these are: rockman.fmv, rockman2.fmv, youkaidouchuuki.fmv, gradius.fmv, hinotori.fmv, atla.fmv,supspyhntr.fmv, upthorn.gmv, Aqfaqv2Gods.gmv, mokaimura.fmv, ZELDA.fmv, mario3j.fmv, contra.fmv.
When Nesvideos was young and consisted mostly of Morimoto's movies, I preserved Morimoto's filenames in order to gain Google hits for those specific filenames (if someone had downloaded the FMV and was looking for an AVI). Of course, this reason is no longer important.
However, if you load the site snapshot (
http://tasvideos.org/TASSnapshot.html), you will find all the movie files there neatly organized under directories that are named for each respective movie/submission ID.
Changing the filenames in the system is not a taboo. Nobody seems to be linking to those files directly, so it shouldn't matter if the filenames change. Adding this to the TODO list.