Changing various video file genre tags

have you tried this

http://www.mp3tag.de/en/

http://abcavi.kibi.ru/

yes tried both abcavi works for most of my avi's but the files are to big it claims for the HD files..

for the file type as an example
.m2ts 4 gig files

cant spot any tag editor for this ,, if you wish use AVS Video editor or Sony Vegas PRo

Why don't you make .AVI file using avs or vegas & then rip it to desired size using AVI ReComp or Autogk, Handbrake

they rip it without loss of quality

ill have to give it a try. I wont loose the Dolby 5.1 doing this will I?

I have tried to convert to AVI and using AVS and other programs the est. time to complete is about 5 hours... I have over 500 videos I'm working with is there any program that supports multi- core conversion and threading?

PC specs. intel i7 2.33 quad-core
12 gigs DDR3 Ram

I should not be having a 5 hour coversion time.
Thanks for your help so far.